Akira Ejiri - Publications

Affiliations: 
The University of Tokyo, Bunkyō-ku, Tōkyō-to, Japan 
Area:
plasma physics, nuclear fusion

182 high-probability publications. We are testing a new system for linking publications to authors. You can help! If you notice any inaccuracies, please sign in and mark papers as correct or incorrect matches. If you identify any major omissions or other inaccuracies in the publication list, please let us know.

Year Citation  Score
2021 Onchi T, Idei H, Fukuyama M, Ogata D, Ashida R, Kariya T, Ejiri A, Matsuzaki K, Osawa Y, Peng Y, Kojima S, Watanabe O, Hasegawa M, Nakamura K, Kuroda K, et al. Non-inductive plasma current ramp-up through oblique injection of harmonic electron cyclotron waves on the QUEST spherical tokamak Physics of Plasmas. 28: 022505. DOI: 10.1063/5.0031357  0.318
2020 Mori S, Shikama T, Hanada K, Yoneda N, Kuzmin A, Hasuo M, Idei H, Onchi T, Ejiri A, Osawa Y, Peng Y, Matsuzaki K, Kado S, Sawada K, Ido T, et al. Spectroscopic Measurement of Hydrogen Atom Density in a Plasma Produced with 28 GHz ECH in QUEST Atoms. 8: 44. DOI: 10.3390/Atoms8030044  0.398
2020 Rice JHP, Tsujii N, Takase Y, Ejiri A, Watanabe O, Yamazaki H, Peng Y, Iwasaki K, Aoi Y, Ko Y, Matsuzaki K, Osawa Y. Erratum: “Langmuir Probe Measurements of Scrape-Off Layer Conditions in RF-Driven Plasmas in TST-2” [Plasma Fusion Res. 15, 2402009 (2020)] Plasma and Fusion Research. 15: 2902058-2902058. DOI: 10.1585/Pfr.15.2902058  0.423
2020 Kojima S, Elserafy H, Hanada K, Idei H, Ikezoe R, Nagashima Y, Hasegawa M, Onchi T, Kuroda K, Nakamura K, Murakami T, Fukuyama M, Kato R, Yoneda R, Ono M, ... Ejiri A, et al. Parametric Decay Wave Observation in HFS X-Mode Injection in QUEST Plasma and Fusion Research. 15: 2402063-2402063. DOI: 10.1585/Pfr.15.2402063  0.31
2020 Nagayama Y, Ejiri A, Takase Y, Tsujii N, Nakanishi H, Ohsuna M, Tsuchiya H, Yamaguchi S. Measurement of Electron Density Fluctuations Using O-Mode Microwave Imaging Reflectometry in a TST-2 Spherical Tokamak Plasma and Fusion Research. 15: 2402060-2402060. DOI: 10.1585/Pfr.15.2402060  0.338
2020 Tsujii N, Yoshida Y, Takase Y, Ejiri A, Watanabe O, Yamazaki H, Peng Y, Iwasaki K, Aoi Y, Ko Y, Matsuzaki K, Rice JHP, Osawa Y. Studies of a Lower-Hybrid Wave Driven Plasma Equilibrium with a Hybrid-MHD Model on the TST-2 Spherical Tokamak Plasma and Fusion Research. 15: 2402010-2402010. DOI: 10.1585/Pfr.15.2402010  0.394
2020 Rice JHP, Tsujii N, Takase Y, Ejiri A, Watanabe O, Yamazaki H, Peng Y, Iwasaki K, Aoi Y, Ko Y, Matsuzaki K, Osawa Y. Langmuir Probe Measurements of Scrape-Off Layer Conditions in RF-Driven Plasmas in TST-2 Plasma and Fusion Research. 15: 2402009-2402009. DOI: 10.1585/Pfr.15.2402009  0.385
2020 Ko Y, Takase Y, Ejiri A, Tsujii N, Watanabe O, Yamazaki H, Moeller CP, Yoshimura Y, Iwasaki K, Aoi Y, Matsuzaki K, Rice JHP, Peng Y, Osawa Y. Observation of Parametric Decay Instability on TST-2 Lower Hybrid Wave Driven Plasma Plasma and Fusion Research. 15: 2402007-2402007. DOI: 10.1585/Pfr.15.2402007  0.413
2020 Ejiri A, Takase Y, Tsujii N, Yajima S, Yamazaki H, Mitarai O. Theoretical study of pre-ionization by inductive field in tokamaks Nuclear Fusion. 60: 36015. DOI: 10.1088/1741-4326/Ab6B3E  0.352
2020 Idei H, Onchi T, Mishra K, Zushi H, Kariya T, Imai T, Watanabe O, Ikezoe R, Hanada K, Ono M, ejiri a, Qian J, Nakamura K, Fujisawa A, Nagashima Y, et al. Electron heating of over-dense plasma with dual-frequency electron cyclotron waves in fully non-inductive plasma ramp-up on the QUEST spherical tokamak Nuclear Fusion. 60: 16030. DOI: 10.1088/1741-4326/Ab4C12  0.422
2019 Ko Y, Tsujii N, Yajima S, Takase Y, Ejiri A, Watanabe O, Yamazaki H, Moeller CP, Yoshimura Y, Yoshida Y, Iida Y, Iwasaki K, Kawamata Y, Sakamoto S, Aoi Y, et al. Measurement of the Lower Hybrid Wave Using RF Magnetic Probes on the TST-2 Spherical Tokamak Plasma and Fusion Research. 14: 3402107-3402107. DOI: 10.1585/Pfr.14.3402107  0.342
2019 Idei H, Onchi T, Kariya T, Tsujimura TI, Kubo S, Kobayashi S, Sakaguchi M, Imai T, Hasegawa M, Nakamura K, Mishra K, Fukuyama M, Yunoki M, Kojima S, Watanabe O, ... ... Ejiri A, et al. 28-GHz ECHCD system with beam focusing launcher on the QUEST spherical tokamak Fusion Engineering and Design. 146: 1149-1152. DOI: 10.1016/J.Fusengdes.2019.02.027  0.406
2018 Delgado-Aparicio LF, Wallace J, Yamazaki H, VanMeter P, Reusch L, Nornberg M, Almagari A, Maddox J, Luethi B, Rissi M, Donath T, Den Hartog D, Sarff J, Weix P, Goetz J, ... ... Ejiri A, et al. Simulation, design, and first test of a multi-energy soft x-ray (SXR) pinhole camera in the Madison Symmetric Torus (MST). The Review of Scientific Instruments. 89: 10G116. PMID 30399822 DOI: 10.1063/1.5038798  0.36
2018 Yamazaki H, Delgado-Aparicio LF, Groebner R, Grierson B, Hill K, Pablant N, Stratton B, Efthimion P, Ejiri A, Takase Y, Ono M. A computational tool for simulation and design of tangential multi-energy soft x-ray pin-hole cameras for tokamak plasmas. The Review of Scientific Instruments. 89: 10G120. PMID 30399783 DOI: 10.1063/1.5038788  0.373
2018 Yajima S, Takase Y, Ejiri A, Tsujii N, Yamazaki H, Moeller CP, Shinya T, Takei Y, Tajiri Y, Yoshida Y, Sato A, Kitayama A, Matsumoto N. Current Drive Experiment Using Top/Outboard Side Lower Hybrid Wave Injection on TST-2 Spherical Tokamak Plasma and Fusion Research. 13: 3402114-3402114. DOI: 10.1585/Pfr.13.3402114  0.306
2018 Yoshimura Y, Ejiri A, Seki R, Sakamoto R, Nagaoka K, Shimozuma T, Igami H, Takahashi H, Tsujimura TI, Warmer F, Yanagihara K, Goto Y, Ida K, Yoshinuma M, Kobayashi T, et al. Effect of Electron Cyclotron Current Drive on the Ion Temperature in the Plasma Core Region of the Large Helical Device Plasma and Fusion Research. 13: 1402124-1402124. DOI: 10.1585/Pfr.13.1402124  0.406
2018 Yamazaki H, Furui H, Yamasaki K, Ushiki T, Ejiri A, Inomoto M, Takase Y, Ono Y, Tsujii N. Measurement of the Local Current Density Inside a Current Sheet Using a Rogowski Coil Array on UTST Merging Plasmas Plasma and Fusion Research. 13: 1202093-1202093. DOI: 10.1585/Pfr.13.1202093  0.416
2018 Tsujimura TI, Mizuno Y, Tokuzawa T, Ito Y, Kubo S, Shimozuma T, Yoshimura Y, Igami H, Takahashi H, Ejiri A. Real-time control of electron cyclotron wave polarization in the LHD Fusion Engineering and Design. 131: 130-134. DOI: 10.1016/J.Fusengdes.2018.04.062  0.392
2018 Roidl B, Todo Y, Takase Y, Tsujii N, Ejiri A, Yoshida Y, Yajima S, Shinya T. A simulation environment to simulate lower-hybrid-wave-driven plasmas efficiently Computer Physics Communications. 230: 38-49. DOI: 10.1016/J.Cpc.2018.04.018  0.426
2017 Ejiri A, Tanaka H, Takahashi W, Sato A, Takase Y, Tsujii N, Uchida M, Maekawa T. Observation of High Impurity Ion Temperatures in ECW/EBW Sustained Plasmas on LATE Plasma and Fusion Research. 12: 1202041-1202041. DOI: 10.1585/Pfr.12.1202041  0.394
2017 Tsujii N, Takase Y, Ejiri A, Shinya T, Togashi H, Yajima S, Yamazaki H, Moeller CP, Roidl B, Sonehara M, Takahashi W, Toida K, Yoshida Y. Numerical modeling of lower hybrid current drive in fully non-inductive plasma start-up experiments on TST-2 Nuclear Fusion. 57: 126032. DOI: 10.1088/1741-4326/Aa8568  0.486
2017 Takeiri Y, Morisaki T, Osakabe M, Yokoyama M, Sakakibara S, Takahashi H, Nakamura Y, Oishi T, Motojima G, Murakami S, Ito K, Ejiri A, Imagawa S, Inagaki S, Isobe M, et al. Extension of the operational regime of the LHD towards a deuterium experiment Nuclear Fusion. 57: 102023. DOI: 10.1088/1741-4326/Aa7Fc2  0.575
2017 Idei H, Kariya T, Imai T, Mishra K, Onchi T, Watanabe O, Zushi H, Hanada K, Qian J, Ejiri A, Alam MM, Nakamura K, fujisawa a, Nagashima Y, Hasegawa M, et al. Fully non-inductive second harmonic electron cyclotron plasma ramp-up in the QUEST spherical tokamak Nuclear Fusion. 57: 126045. DOI: 10.1088/1741-4326/Aa7C20  0.49
2017 Takase Y, Ejiri A, Fujita T, Fukumoto N, Fukuyama A, Hanada K, Idei H, Nagata M, Ono Y, Tanaka H, Uchida M, Horiuchi R, Kamada Y, Kasahara H, Masuzaki S, et al. Overview of spherical tokamak research in Japan Nuclear Fusion. 57: 102005. DOI: 10.1088/1741-4326/Aa62C1  0.454
2017 Shinya T, Takase Y, Yajima S, Moeller C, Yamazaki H, Tsujii N, Yoshida Y, Ejiri A, Togashi H, Toida K, Furui H, Homma H, Nakamura K, Roidl B, Sonehara M, et al. Plasma current start-up experiments using outboard- and top-launch lower hybrid wave on the TST-2 spherical tokamak Nuclear Fusion. 57: 36006. DOI: 10.1088/1741-4326/57/3/036006  0.419
2017 Furui H, Ejiri A, Nagashima Y, Takase Y, Sonehara M, Tsujii N, Roidl B, Shinya T, Togashi H, Homma H, Nakamura K, Takeuchi T, Yajima S, Yoshida Y, Toida K, et al. Measurements of edge plasma parameters during internal reconnection events in the TST-2 spherical tokamak Physics of Plasmas. 24: 62504. DOI: 10.1063/1.4985077  0.438
2016 Furui H, Ejiri A, Nagashima Y, Takase Y, Sonehara M, Tsujii N, Yamaguchi T, Shinya T, Togashi H, Homma H, Nakamura K, Takeuchi T, Yajima S, Yoshida Y, Toida K, et al. A model of plasma current through a hole of Rogowski probe including sheath effects. The Review of Scientific Instruments. 87: 043503. PMID 27131670 DOI: 10.1063/1.4944941  0.41
2016 Ejiri A, Takase Y, Tsujii N, Shinya T, Yajima S, Sonehara M, Furui H, Togashi H, Homma H, Nakamura K, Takeuchi T, Yoshida Y, Takahashi W, Toida K, Yamazaki H. RF Central Solenoid Operation for Plasma Production and Current Drive in TST-2 Plasma and Fusion Research. 11: 1202004-1202004. DOI: 10.1585/Pfr.11.1202004  0.394
2016 Tojo H, Yamada I, Yasuhara R, Ejiri A, Hiratsuka J, Togashi H, Yatsuka E, Hatae T, Funaba H, Hayashi H, Takase Y, Itami K. Validations of calibration-free measurements of electron temperature using double-pass Thomson scattering diagnostics from theoretical and experimental aspects Review of Scientific Instruments. 87. DOI: 10.1063/1.4961476  0.335
2016 Banerjee S, Zushi H, Nishino N, Mishra K, Mahira Y, Tashima S, Ejiri A, Yamaguchi T, Onchi T, Nagashima Y, Hanada K, Nakamura K, Idei H, Hasegawa M, Fujisawa A, et al. Observation of an edge coherent mode and poloidal flow in the electron cyclotron wave induced high βp plasma in QUEST Physics of Plasmas. 23. DOI: 10.1063/1.4960117  0.49
2015 Ishida A, Ejiri A, Takase Y, Tsujii N, Togashi H, Yoshida Y, Shinya T, Tsuda S. Three-Fluid Axisymmetric Equilibrium Model and Application to Spherical Torus Plasmas Sustained by RF Electron Heating Plasma and Fusion Research. 10: 1403084-1403084. DOI: 10.1585/Pfr.10.1403084  0.389
2015 Hiratsuka J, Ejiri A, Hasegawa M, Nagashima Y, Nakamura K, Takase Y, Togashi H, Tojo H, Yamaguchi T. Simultaneous Measurement of Plasma Pressure Anisotropy with a Double-Pass Thomson Scattering Diagnostic System on the TST-2 Plasma and Fusion Research. 10: 1402007-1402007. DOI: 10.1585/Pfr.10.1402007  0.381
2015 Togashi H, Ejiri A, Homma H, Shinya T, Takase Y, Toida K, Tsujii N, Yamaguchi T, Yoshida Y, Hasegawa M, Nagashima Y, Furui H, Nakamura K, Takahashi W, Takeuchi T, et al. First Measurement of Electron Temperature and Density Profiles for Spherical Tokamak Plasmas Sustained by Lower Hybrid Waves Plasma and Fusion Research. 10: 1202082-1202082. DOI: 10.1585/Pfr.10.1202082  0.457
2015 Tsuda S, Ejiri A, Tanaka H, Takase Y, Uchida M, Maekawa T, Tsujii N, Takeuchi T. Measurement of Ion Temperature and Flow in RF Start-Up Plasmas in TST-2 and LATE Plasma and Fusion Research. 10: 1202064-1202064. DOI: 10.1585/Pfr.10.1202064  0.39
2015 Ejiri A, Tokuzawa T, Tsujii N, Saito K, Seki T, Kasahara H, Kamio S, Seki R, Mutoh T, Yamada I, Takase Y. Measurements of ICRF wave-induced density fluctuations in LHD by a microwave reflectometer Journal of Instrumentation. 10. DOI: 10.1088/1748-0221/10/12/C12032  0.418
2015 Togashi H, Ejiri A, Homma H, Shinya T, Takase Y, Toida K, Tsujii N, Yamaguchi T, Yoshida Y, Furui H, Sonehara M, Nakamura K, Takahashi W, Takeuchi T, Yajima S, et al. Thomson scattering measurements in low-density plasmas in the TST-2 spherical tokamak Journal of Instrumentation. 10. DOI: 10.1088/1748-0221/10/12/C12020  0.475
2015 Mishra K, Zushi H, Idei H, Hasegawa M, Onchi T, Tashima S, Banerjee S, Hanada H, Togashi H, Yamaguchi T, Ejiri A, Takase Y, Nakamura K, Fujisawa A, Nagashima Y, et al. Self organization of high βp plasma equilibrium with an inboard poloidal magnetic field null in QUEST Nuclear Fusion. 55. DOI: 10.1088/0029-5515/55/8/083009  0.391
2015 Shinya T, Takase Y, Wakatsuki T, Ejiri A, Furui H, Hiratsuka J, Imamura K, Inada T, Kakuda H, Kasahara H, Kumazawa R, Moeller C, Mutoh T, Nagashima Y, Nakamura K, et al. Non-inductive plasma start-up experiments on the TST-2 spherical tokamak using waves in the lower-hybrid frequency range Nuclear Fusion. 55. DOI: 10.1088/0029-5515/55/7/073003  0.432
2015 Tsujimura T, Kubo S, Takahashi H, Makino R, Seki R, Yoshimura Y, Igami H, Shimozuma T, Ida K, Suzuki C, Emoto M, Yokoyama M, Kobayashi T, Moon C, Nagaoka K, ... ... Ejiri A, et al. Development and application of a ray-tracing code integrating with 3D equilibrium mapping in LHD ECH experiments Nuclear Fusion. 55. DOI: 10.1088/0029-5515/55/12/123019  0.414
2015 Ida K, Nagaoka K, Inagaki S, Kasahara H, Evans T, Yoshinuma M, Kamiya K, Ohdach S, Osakabe M, Kobayashi M, Sudo S, Itoh K, Akiyama T, Emoto M, Dinklage A, ... ... Ejiri A, et al. Overview of transport and MHD stability study: Focusing on the impact of magnetic field topology in the Large Helical Device Nuclear Fusion. 55. DOI: 10.1088/0029-5515/55/10/104018  0.382
2014 Furui H, Nagashima Y, Takase Y, Ejiri A, Kakuda H, Sonehara M, Oosako T, Tsujii N, Hiratsuka J, Imamura K, Inada T, Nakamura K, Nakanishi A, Shinya T, Togashi H, et al. Local current density measurement using a Rogowski probe in Tokyo Spherical Tokamak-2. The Review of Scientific Instruments. 85: 11D813. PMID 25430226 DOI: 10.1063/1.4887277  0.399
2014 Togashi H, Ejiri A, Hiratsuka J, Nakamura K, Takase Y, Yamaguchi T, Furui H, Imamura K, Inada T, Kakuda H, Nakanishi A, Oosako T, Shinya T, Sonehara M, Tsuda S, et al. Note: Multi-pass Thomson scattering measurement on the TST-2 spherical tokamak. The Review of Scientific Instruments. 85: 056103. PMID 24880428 DOI: 10.1063/1.4878260  0.336
2014 Peng YKM, Ishida A, Takase Y, Ejiri A, Tsujii N, Maekawa T, Uchida M, Zushi H, Hanada K, Hasegawa M. Two-Fluid Equilibrium Considerations of Te/Ti » 1, Collisionless ST Plasmas Sustained by RF Electron Heating Plasma and Fusion Research. 9: 3403146-3403146. DOI: 10.1585/Pfr.9.3403146  0.396
2014 Furui H, Nagashima Y, Takase Y, Ejiri A, Kakuda H, Sonehara M, Oosako T, Tsujii N, Hiratsuka J, Imamura K, Inada T, Nakamura K, Nakanishi A, Shinya T, Togashi H, et al. Development of a local current diagnostic using a small Rogowski coil for a spherical tokamak plasma in TST-2 Plasma and Fusion Research. 9. DOI: 10.1585/Pfr.9.3402078  0.415
2014 Shinya T, Ejiri A, Takase Y, Wakatsuki T, Oosako T, Tsujii N, Kakuda H, Furui H, Hiratsuka J, Inada T, Imamura K, Nakamura K, Nakanishi A, Sonehara M, Togashi H, et al. Identification of waves by RF magnetic probes during lower hybrid wave injection experiments on the TST-2 spherical tokamak Plasma and Fusion Research. 9. DOI: 10.1585/Pfr.9.3402040  0.316
2014 Shinya T, Takase Y, Moeller CP, Wakatsuki T, Inada T, Oosako T, Kakuda H, Ejiri A, Tsujii N, Furui H, Hiratsuka J, Imamura K, Nakamura K, Nakanishi A, Sonehara M, et al. Plasma Density Suppression by Electron Cyclotron Wave in Lower Hybrid Wave Driven TST-2 Spherical Tokamak Plasma Plasma and Fusion Research. 9: 1202133-1202133. DOI: 10.1585/Pfr.9.1202133  0.456
2014 Wakatsuki T, Ejiri A, Shinya T, Takase Y, Furui H, Hiratsuka J, Imamura K, Inada T, Kakuda H, Kasahara H, Nagashima Y, Nakamura K, Nakanishi A, Oosako T, Saito K, et al. Plasma current start-up experiments using a dielectric-loaded waveguide array antenna in the TST-2 spherical tokamak Nuclear Fusion. 54: 93014. DOI: 10.1088/0029-5515/54/9/093014  0.425
2014 Furui H, Nagashima Y, Takase Y, Ejiri A, Kakuda H, Sonehara M, Oosako T, Tsujii N, Hiratsuka J, Imamura K, Inada T, Nakamura K, Nakanishi A, Shinya T, Togashi H, et al. Erratum: “Local current density measurement using a Rogowski probe in the Tokyo Spherical Tokamak-2” [Rev. Sci. Instrum. 85, 11D813 (2014)] Review of Scientific Instruments. 85. DOI: 10.1063/1.4898800  0.307
2013 Yamaguchi T, Ejiri A, Hiratsuka J, Hasegawa M, Nagashima Y, Narihara K, Takase Y, Zushi H. Electron Temperature Measurement on QUEST Spherical Tokamak by Thomson Scattering System Plasma and Fusion Research. 8: 1302001-1302001. DOI: 10.1585/Pfr.8.1302001  0.444
2013 Takase Y, Ejiri A, Kakuda H, Oosako T, Shinya T, Wakatsuki T, Ambo T, Furui H, Hashimoto T, Hiratsuka J, Kasahara H, Kato K, Kumazawa R, Moeller CP, Mutoh T, et al. Non-inductive plasma initiation and plasma current ramp-up on the TST-2 spherical tokamak Nuclear Fusion. 53. DOI: 10.1088/0029-5515/53/6/063006  0.432
2013 Kaneko O, Yamada H, Inagaki S, Jakubowski M, Kajita S, Kitajima S, Kobayashi, Koga K, Morisaki T, Morita S, Mutoh T, Sakakibara S, Suzuki Y, Takahashi H, Tanaka K, ... ... Ejiri A, et al. Extension of operation regimes and investigation of three-dimensional currentless plasmas in the Large Helical Device Nuclear Fusion. 53. DOI: 10.1088/0029-5515/53/10/104015  0.472
2012 Tokuzawa T, Ejiri A, Kawahata K, Tanaka K, Yamada I, Yoshinuma M, Ida K, Suzuki C. Microwave Doppler reflectometer system in LHD Review of Scientific Instruments. 83. PMID 23126980 DOI: 10.1063/1.4733736  0.309
2012 Sonehara M, Nagashima Y, Takase Y, Ejiri A, Yamaguchi T, Ambo T, Kakuda H, Hiratsuka J, Sakamoto T, Shino R, Wakatsuki T, Watanabe O. Fluctuation Measurement Across the Broad Range of the Low-field Side Edge Plasmas in the TST-2 Spherical Tokamak Ieej Transactions On Fundamentals and Materials. 132: 499-504. DOI: 10.1541/Ieejfms.132.499  0.454
2012 Wakatsuki T, Ejiri A, Kakuda H, Takase Y, Ambo T, Furui H, Hashimoto T, Hiratsuka J, Kasahara H, Kato K, Kumazawa R, Nagashima Y, Saito K, Sakamoto T, Seki T, et al. X-ray Measurements during Plasma Current Start-up Experiments using the lower hybrid wave on the TST-2 spherical tokamak Ieej Transactions On Fundamentals and Materials. 132: 485-489+5. DOI: 10.1541/Ieejfms.132.485  0.411
2011 NAGASHIMA Y, EJIRI A, TAKASE Y, SONEHARA M, KAKUDA H, OOSAKO T, HIRATSUKA J, WATANABE O, YAMAGUCHI T, KOBAYASHI H, WAKATSUKI T, SAKAMOTO T, HANASHIMA K, AMBO T, SHINO R, et al. Evaluation of Edge Electron Temperature Fluctuation by the Use of Fast Voltage Scanning Method on TST-2 Plasma and Fusion Research. 6: 2402036-2402036. DOI: 10.1585/Pfr.6.2402036  0.345
2011 Hiratsuka J, Ejiri A, Hasegawa M, Nagashima Y, Takase Y, Tojo H, Yamaguchi T, Ambo T, Kakuda H, Sakamoto T, Shino R, Sonehara M, Wakatsuki T, Watanabe O. Development of a Double-Pass Thomson Scattering System in the TST-2 Spherical Tokamak Plasma and Fusion Research. 6: 1202133-1202133. DOI: 10.1585/Pfr.6.1202133  0.305
2011 Takase Y, Ejiri A, Kakuda H, Nagashima Y, Wakatsuki T, Watanabe O, Bonoli P, Meneghini O, Shiraiwa S, Wright J, Moeller C, Kasahara H, Kumazawa R, Mutoh T, Saito K. Development of a plasma current ramp-up technique for spherical tokamaks by the lower hybrid wave Nuclear Fusion. 51. DOI: 10.1088/0029-5515/51/6/063017  0.45
2011 Idei H, Zushi H, Hanada K, Nakamura K, Fujisawa A, Hasegawa M, Yoshida N, Sakamoto M, Watanebe H, Tokunaga K, Nagashima Y, Ejiri A, Sakaguchi M, Kalinnikova E, Ishiguro M, et al. Electron Cyclotron / Bernstein wave heating and current drive experiments using phased-array antenna in QUEST Aip Conference Proceedings. 1406: 473-476. DOI: 10.1063/1.3665017  0.372
2011 Takase Y, Wakatsuki T, Ejiri A, Kakuda H, Moeller CP, Ambo T, Hanashima K, Hiratsuka J, Kasahara H, Kumazawa R, Nagashima Y, Saito K, Sakamoto T, Seki T, Shimpo F, et al. Plasma curent start-up experiment using waves in the lower hybrid frequency range in TST-2 Aip Conference Proceedings. 1406: 427-430. DOI: 10.1063/1.3665007  0.388
2010 Tokuzawa T, Ejiri A, Kawahata K. Multifrequency channel microwave reflectometer with frequency hopping operation for density fluctuation measurements in Large Helical Device. Review of Scientific Instruments. 81. PMID 21033938 DOI: 10.1063/1.3478747  0.337
2010 Nagashima Y, Oosako T, Takase Y, Ejiri A, Watanabe O, Kobayashi H, Adachi Y, Tojo H, Yamaguchi T, Kurashina H, Yamada K, An BI, Kasahara H, Shimpo F, Kumazawa R, et al. Observation of beat oscillation generation by coupled waves associated with parametric decay during radio frequency wave heating of a spherical tokamak plasma. Physical Review Letters. 104: 245002. PMID 20867308 DOI: 10.1103/Physrevlett.104.245002  0.377
2010 YAMAGUCHI T, EJIRI A, HIRATSUKA J, TAKASE Y, NAGASHIMA Y, WATANABE O, SAKAMOTO T, OHSAKO T, AN BI, KURASHINA H, KOBAYASHI H, HAYASHI H, MATSUZAWA H, YAMADA K, KAKUDA H, et al. Development of a Thomson Scattering System in the TST-2 Spherical Tokamak Plasma and Fusion Research. 5: S2092-S2092. DOI: 10.1585/Pfr.5.S2092  0.384
2010 Sugihara M, Oki K, Ikezoe R, Onchi T, Sanpei A, Himura H, Masamune S, Akiyama T, Ejiri A, Sakamoto K, Nagasaki K, Zhuravlev V. Density Regimes of Low-Aspect-Ratio RFP Plasmas in RELAX Plasma and Fusion Research. 5. DOI: 10.1585/Pfr.5.S2061  0.401
2010 Nagashima Y, Ozaki J, Sonehara M, Takase Y, Ejiri A, Yamada K, Kakuda H, Inagaki S, Oosako T, An BI, Hayashi H, Hanashima K, Hiratsuka J, Kobayashi H, Kurashina H, et al. Fluctuation Measurement in the Edge Plasma on TST-2 Plasma and Fusion Research. 5. DOI: 10.1585/Pfr.5.S2049  0.422
2010 WATANABE O, EJIRI A, KURASHINA H, OHSAKO T, NAGASHIMA Y, YAMAGUCHI T, SAKAMOTO T, AN BI, HAYASHI H, KOBAYASHI H, YAMADA K, KAKUDA H, HIRATSUKA J, HANASHIMA K, WAKATSUKI T, et al. Comparison of Hydrogen and Deuterium Plasmas in ECH Start-Up Experiment in the TST-2 Spherical Tokamak Plasma and Fusion Research. 5: S2032-S2032. DOI: 10.1585/Pfr.5.S2032  0.425
2010 Hanada K, Sato KN, Zushi H, Nakamura K, Sakamoto M, Idei H, Hasegawa M, Takase Y, Mitarai O, Maekawa T, Kishimoto Y, Ishiguro M, Yoshinaga T, Igami H, Nishino N, ... ... Ejiri A, et al. Steady-State Operation Scenario and the First Experimental Result on QUEST Plasma and Fusion Research. 5. DOI: 10.1585/Pfr.5.S1007  0.318
2010 Hiratsuka J, Ejiri A, Takase Y, Yamaguchi T. Feasibility of a Multi-Pass Thomson Scattering System with Confocal Spherical Mirrors Plasma and Fusion Research. 5: 44-44. DOI: 10.1585/Pfr.5.044  0.37
2010 KURASHINA H, EJIRI A, TAKASE Y, HANASHIMA K, SAKAMOTO T, WATANABE O, NAGASHIMA Y, YAMAGUCHI T, AN BI, KOBAYASHI H, HAYASHI H, YAMADA K, MATSUZAWA H, KAKUDA H, HIRATSUKA J, et al. Electron Density Measurements of Non-Inductive Start-Up Plasmas in the TST-2 Spherical Tokamak Plasma and Fusion Research. 5: 024-024. DOI: 10.1585/Pfr.5.024  0.44
2010 OZAKI J, SONEHARA M, NAGASHIMA Y, TAKASE Y, EJIRI A, YAMADA K, KAKUDA H, INAGAKI S, OOSAKO T, AN BI, HAYASHI H, HANASHIMA K, HIRATSUKA J, KOBAYASHI H, KURASHINA H, et al. Evaluation of Edge Electron Temperature Fluctuations Using a Conditional Technique on TST-2 Plasma and Fusion Research. 5: 023-023. DOI: 10.1585/Pfr.5.023  0.349
2010 Wakatsuki T, Nagashima Y, Oosako T, Kobayashi H, An BI, Kakuda H, Yamada T, Imazawa R, Watanabe O, Yamaguchi T, Kurashina H, Hayashi H, Yamada K, Sakamoto T, Hanashima K, ... ... Ejiri A, et al. Direct Measurements of High Harmonic Fast Wave Profile in the UTST Spherical Tokamak Plasma Plasma and Fusion Research. 5: 18-18. DOI: 10.1585/Pfr.5.018  0.461
2009 TOJO H, EJIRI A, TAKASE Y, NAGASHIMA Y, WATANABE O, ADACHI Y, OOSAKO T, YAMAGUCHI T, AN BI, KOBAYASHI H, KURASHINA H, MATSUZAWA H, YAMADA K, SASAKI M, MASUDA T. Phase Alignments between MHD Modes Followed by Minor Collapses on TST-2 Plasma and Fusion Research. 4: 015-015. DOI: 10.1585/Pfr.4.015  0.385
2009 Nagashima Y, Ejiri A, Fujisawa A, Takase Y. Calculation of beam trajectories of a heavy ion beam probe diagnostic in the TST-2 spherical tokamak Ieej Transactions On Fundamentals and Materials. 129. DOI: 10.1541/Ieejfms.129.575  0.321
2009 Sasaki M, Itoh K, Ejiri A, Takase Y. Transient excitation of zonal flows by geodesic acoustic modes Plasma Physics and Controlled Fusion. 51: 85002. DOI: 10.1088/0741-3335/51/8/085002  0.325
2009 Nagashima Y, Itoh K, fujisawa a, Shinohara K, Itoh S, Ido T, Yagi M, Hoshino K, Ejiri A, Takase Y, Uehara K, Miura Y. Boundary of the geodesic acoustic eigenmode in the vicinity of the magnetic separatrix Plasma Physics and Controlled Fusion. 51: 65019. DOI: 10.1088/0741-3335/51/6/065019  0.39
2009 Oosako T, Takase Y, Ejiri A, Nagashima Y, Adachi Y, Kasahara H, Yamada T, Watanabe O, Tojo H, Kainaga S, Sugiyama J, Yamaguchi T, An B, Hayashi H, Kobayashi H, et al. Parametric decay instability during high harmonic fast wave heating experiments on the TST-2 spherical tokamak Nuclear Fusion. 49. DOI: 10.1088/0029-5515/49/6/065020  0.434
2009 Ejiri A, Takase Y, Oosako T, Yamaguchi T, Adachi Y, Watanabe O, Nagashima Y, An BI, Kobayashi H, Kurashina H, Hayashi H, Matsuzawa H, Yamada K, Tojo H, Masuda T, et al. Non-inductive plasma current start-up by EC and RF power in the TST-2 spherical tokamak Nuclear Fusion. 49. DOI: 10.1088/0029-5515/49/6/065010  0.435
2009 Gates DA, Ahn J, Allain J, Andre R, Bastasz R, Bell M, Bell R, Belova E, Berkery J, Betti R, Bialek J, Biewer T, Bigelow T, Bitter M, Boedo J, ... ... Ejiri A, et al. Overview of results from the national spherical torus experiment (NSTX) Nuclear Fusion. 49. DOI: 10.1088/0029-5515/49/10/104016  0.627
2009 Sasaki M, Itoh K, Nagashima Y, Ejiri A, Takase Y. Nonlinear self-interaction of geodesic acoustic modes in toroidal plasmas Physics of Plasmas. 16: 22306. DOI: 10.1063/1.3076933  0.324
2009 Sasaki M, Itoh K, Ejiri A, Takase Y. Poloidal eigenmode of the geodesic acoustic mode in the limit of high safety factor Journal of Plasma Physics. 75: 721-729. DOI: 10.1017/S0022377809007910  0.315
2008 Adachi Y, Ejiri A, Takase Y, Watanabe O, Oosako T, Tojo H, Kainaga S, Masuda T, Sasaki M, Sugiyama J, Yamaguchi T. Detection of a new parametric decay instability branch in TST-2 during high harmonic fast wave heating. Review of Scientific Instruments. 79. PMID 19044652 DOI: 10.1063/1.2955574  0.361
2008 Tojo H, Ejiri A, Gryaznevich MP, Takase Y, Adachi Y. Poloidal mode analysis of magnetic probe data in a spherical tokamak configuration. Review of Scientific Instruments. 79. PMID 19044604 DOI: 10.1063/1.2965014  0.352
2008 Tokuzawa T, Ejiri A, Kawahata K, Tanaka K, Ito Y. V-band frequency hopping microwave reflectometer in LHD Review of Scientific Instruments. 79. PMID 19044593 DOI: 10.1063/1.2969036  0.394
2008 Tokuzawa T, Ejiri A, Kawahata K. Observation of the Internal Structure of Energetic Particle-Driven MHD Modes in a Large Helical Device Plasma and Fusion Research. 3. DOI: 10.1585/Pfr.3.S1064  0.391
2008 Watanabe O, Ejiri A, Yamaguchi T, Sugiyama J, Oosako T, Adachi Y, Yamada K, Tojo H, Kainaga S, Takase Y, Nagashima Y, Sasaki M, Masuda T. Plasma Current Sustainment by RF Power in ECH Start-up Plasma in the TST-2 Spherical Tokamak Plasma and Fusion Research. 3: 49-49. DOI: 10.1585/Pfr.3.049  0.465
2008 Kainaga S, Ejiri A, Takase Y, Watanabe O, Adachi Y, Oosako T, Sasaki M, Tojo H, Masuda T, Sugiyama J, Yamaguchi T. Development of a Compact Thomson Scattering System for the TST-2 Spherical Tokamak Plasma and Fusion Research. 3: 27-27. DOI: 10.1585/Pfr.3.027  0.336
2008 Sugiyama J, Ejiri A, Takase Y, Watanabe O, Adachi Y, Tojo H, Sasaki M, Masuda T, Oosako T, Kainaga S. Electron Cyclotron Heating Start-Up Experiments on TST-2 Plasma and Fusion Research. 3: 26-26. DOI: 10.1585/Pfr.3.026  0.415
2008 Sasaki M, Itoh K, Ejiri A, Takase Y. Modification of Symmetry of Poloidal Eigenmode of Geodesic Acoustic Modes Plasma and Fusion Research. 3: 9-9. DOI: 10.1585/Pfr.3.009  0.343
2008 Ejiri A, Yamada T, Adachi Y, Watanabe O, Takase Y. The response of microwave reflectometry under generalized configuration Plasma Physics and Controlled Fusion. 50: 65003. DOI: 10.1088/0741-3335/50/6/065003  0.349
2008 Sasaki M, Itoh K, Ejiri A, Takase Y. Radial Eigenmodes of Geodesic Acoustic Modes Contributions to Plasma Physics. 48: 68-72. DOI: 10.1002/Ctpp.200810011  0.303
2007 Yamada T, Ejiri A, Shimada Y, Oosako T, Tsujimura J, Takase Y, Kasahara H. Direct measurement of density oscillation induced by a radio-frequency wave. Review of Scientific Instruments. 78: 83502-83502. PMID 17764321 DOI: 10.1063/1.2769351  0.419
2007 Tojo H, Ejiri A, Takase Y, Torii Y, Osako T, Sasaki M, Masuda T, Shimada Y, Sumitomo N, Tsujimura J, Nuga H, Kainaga S, Sugiyama J. Soft X-ray Emission Profile and Mode Structure During MHD Events in the TST-2 Spherical Tokamak Plasma and Fusion Research. 2: 1065. DOI: 10.1585/Pfr.2.S1065  0.344
2007 Yamada T, Ejiri A, Shimada Y, Oosako T, Tsujimura J, Takase Y, Torii Y, Sasaki M, Tojo H, Masuda T, Nuga H, Sumitomo N, Kainaga S, Sugiyama J. Reflectometry for Density Fluctuation and Profile Measurements in TST-2 Plasma and Fusion Research. 2. DOI: 10.1585/Pfr.2.S1037  0.424
2007 Torii Y, Ejiri A, Masuda T, Oosako T, Sasaki M, Tojo H, Nuga H, Shimada Y, Sumitomo N, Tsujimura J, Kainaga S, Sugiyama J, Takase Y. First Observation of RF-Induced Visible Light Fluctuations Plasma and Fusion Research. 2: 23-23. DOI: 10.1585/Pfr.2.023  0.374
2007 Ejiri A, Oosako T, Tsujimura J, Shimada Y, Takase Y, Torii Y, Sasaki M, Tojo H, Masuda T, Nuga H, Sumitomo N, Kainaga S, Sugiyama J, Tsujii N. ECH and HHFW Start-Up Experiments on the TST-2 Spherical Tokamak Fusion Science and Technology. 51: 168-170. DOI: 10.13182/Fst07-A1341  0.408
2007 Nagashima Y, Itoh K, Itoh S, fujisawa a, Yagi M, Hoshino K, Shinohara K, Ejiri A, Takase Y, Ido T, Uehara K, Miura Y. In search of zonal flows by using direct density fluctuation measurements Plasma Physics and Controlled Fusion. 49: 1611-1625. DOI: 10.1088/0741-3335/49/10/002  0.395
2007 Ejiri A, Takase Y. Toroidal current initiation in low aspect ratio tokamaks based on single-particle orbit analysis Nuclear Fusion. 47: 403-416. DOI: 10.1088/0029-5515/47/5/005  0.376
2006 Nagashima Y, Hoshino K, Nagaoka K, Shinohara K, Fujisawa A, Uehara K, Kusama Y, Ida K, Yoshimura Y, Okamura S, Matsuoka K, Ejiri A, Takase Y, Itoh K, Yagi M, et al. Experimental Study of Nonlinear Processes in Edge Turbulence of Toroidal Plasmas Plasma and Fusion Research. 1: 41-41. DOI: 10.1585/Pfr.1.041  0.446
2006 Kasai S, Kamiya K, Shinohara K, Kawashima H, Ogawa H, Uehara K, Miura Y, Okano F, Suzuki S, Hoshino K, Tsuzuki K, Sato M, Oasa K, Kusama Y, Yamauchi T, ... ... Ejiri A, et al. Plasma Diagnostics in JFT-2M Fusion Science and Technology. 49: 225-240. DOI: 10.13182/Fst06-A1097  0.436
2006 Nagashima Y, Itoh K, Itoh SI, Hoshino K, Fujisawa A, Ejiri A, Takase Y, Yagi M, Shinohara K, Uehara K, Kusama Y. Observation of coherent bicoherence and biphase in potential fluctuations around geodesic acoustic mode frequency on JFT-2M Plasma Physics and Controlled Fusion. 48: A377-A386. DOI: 10.1088/0741-3335/48/5A/S38  0.334
2006 Nagashima Y, Itoh K, Itoh SI, Fujisawa A, Hoshino K, Takase Y, Yagi M, Ejiri A, Ida K, Shinohara K, Uehara K, Kusama Y. Bispectral analysis applied to coherent floating potential fluctuations obtained in the edge plasmas on JFT-2M Plasma Physics and Controlled Fusion. 48: S1-S15. DOI: 10.1088/0741-3335/48/4/S01  0.424
2006 Takase Y, Ejiri A, Shiraiwa S, Adachi Y, Ishii N, Kasahara H, Nuga H, Ono Y, Oosako T, Sasaki M, Shimada Y, Sumitomo N, Taguchi I, Tojo H, Tsujimura J, et al. Plasma current start-up experiments without the central solenoid in the TST-2 spherical tokamak Nuclear Fusion. 46. DOI: 10.1088/0029-5515/46/8/S05  0.485
2006 Ejiri A, Takase Y, Kasahara H, Yamada T, Hanada K, Sato KN, Zushi H, Nakamura K, Sakamoto M, Idei H, Hasegawa M, Iyomasa A, Imamura N, Esaki K, Kitaguchi M, et al. RF start-up and sustainment experiments on the TST-2@K spherical tokamak Nuclear Fusion. 46: 709-713. DOI: 10.1088/0029-5515/46/7/003  0.436
2006 Tsuzuki K, Kamiya K, Shinohara K, Bakhtiari M, Ogawa H, Kurita G, Takechi M, Kasai S, Sato M, Kawashima H, Uehara K, Hoshino K, Kusama Y, Yamamoto M, Shibata T, ... ... Ejiri A, et al. Compatibility of reduced activation ferritic steel wall with high performance plasma on JFT-2M Nuclear Fusion. 46: 966-971. DOI: 10.1088/0029-5515/46/11/010  0.381
2006 Nozato H, Morita S, Goto M, Takase Y, Ejiri A, Amano T, Tanaka K, Inagaki S. A dependence of carbon impurity transport coefficients on fuel ions in hydrogen and helium plasmas of Large Helical Device Physics of Plasmas. 13: 92502. DOI: 10.1063/1.2337790  0.418
2006 Tanaka K, Ejiri A, Ito Y, Kawahata K, Tokuzawa T, Osakabe M, Takeiri Y. Homodyne reflectometer for neutral beam injection interlock on large helical device Review of Scientific Instruments. 77. DOI: 10.1063/1.2222169  0.39
2006 Nagashima Y, Itoh SI, Yagi M, Itoh K, Fujisawa A, Hoshino K, Shinohara K, Uehara K, Kusama Y, Ejiri A, Takase Y. Convergence study of bispectral analysis in experiments of high temperature plasmas Review of Scientific Instruments. 77. DOI: 10.1063/1.2194016  0.387
2005 Nagashima Y, Hoshino K, Ejiri A, Shinohara K, Takase Y, Tsuzuki K, Uehara K, Kawashima H, Ogawa H, Ido T, Kusama Y, Miura Y. Observation of nonlinear coupling between small-poloidal wave-number potential fluctuations and turbulent potential fluctuations in Ohmically heated plasmas in the JFT-2M tokamak. Physical Review Letters. 95: 095002. PMID 16197220 DOI: 10.1103/Physrevlett.95.095002  0.408
2005 Shiraiwa S, Ejiri A, Hanada K, Hasegawa M, Hoshika H, Idei H, Iyomasa A, Kamada Y, Kasahara H, Mitarai O, Nakamura K, Nishino N, Nozato H, Ohara S, Sasaki K, et al. Evidence of Electron Bernstein Wave Heating on the TST-2 Spherical Tokamak Journal of Plasma and Fusion Research. 81: 3-4. DOI: 10.1585/Jspf.81.3  0.371
2005 Zushi H, Nakamura K, Hanada K, Sato KN, Sakamoto M, Idei H, Hasegawa M, Iyomasa A, Kawasaki S, Nakashima H, Higashijima A, Kuramoto T, Tanaka A, Matsuo Y, Esaki K, ... ... Ejiri A, et al. Steady-state tokamak operation, ITB transition and sustainment and ECCD experiments in TRIAM-1M Nuclear Fusion. 45. DOI: 10.1088/0029-5515/45/10/S12  0.408
2004 Mitarai O, Takase Y, Ejiri A, Shiraiwa S, Kasahara H, Yamada T, Ohara S, Team T, Nakamura K, Iyomasa A, Hasegawa M, Idei H, Sakamoto M, Hanada K, Satoh K, et al. Plasma Current Start-up by ECW and Vertical Field in the TST-2 Spherical Tokamak Journal of Plasma and Fusion Research. 80: 549-550. DOI: 10.1585/Jspf.80.549  0.466
2004 Nagashima Y, Shinohara K, Hoshino K, Ejiri A, Tsuzuki K, Ido T, Uehara K, Kawashima H, Kamiya K, Ogawa H, Yamada T, Shiraiwa S, Ohara S, Takase Y, Asakura N, et al. Coherent edge fluctuation measurements in H-mode discharges on JFT-2M Plasma Physics and Controlled Fusion. 46: 381-386. DOI: 10.1088/0741-3335/46/5A/043  0.361
2004 Nozato H, Morita S, Goto M, Takase Y, Ejiri A, Amano T, Tanaka K, Inagaki S. A study of charge dependence of particle transport using impurity pellet injection and high-spatial resolution bremsstrahlung measurement on the Large Helical Device Physics of Plasmas. 11: 1920-1930. DOI: 10.1063/1.1695355  0.34
2004 Tsuzuki K, Shinohara K, Kamiya K, Kawashima H, Sato M, Kurita G, Bakhtiari M, Ogawa H, Hoshino K, Kasai S, Uehara K, Kusama Y, Yamamoto M, Shibata T, Kikuchi K, ... ... Ejiri A, et al. Investigation of compatibility of low activation ferritic steel with high performance plasma by full covering of inside vacuum vessel wall on JFT-2M Journal of Nuclear Materials. 329: 721-725. DOI: 10.1016/J.Jnucmat.2004.04.184  0.368
2003 Ejiri A. How to Make a Microwave Reflectometer Journal of Plasma and Fusion Research. 79: 921-928. DOI: 10.1585/Jspf.79.921  0.472
2003 Ejiri A. Microwave Reflectometry for Plasma Diagnostics Journal of Plasma and Fusion Research. 79: 742-749. DOI: 10.1585/Jspf.79.742  0.479
2003 Ejiri A, Shiraiwa S, Takase Y, Nagashima Y, Kasahara H, Yamada T, Ushigome M, Iijima D, Kobori Y, Nishi T, Taniguchi T, Yamagishi K. Visible Fluctuation Measurements on the TST-2 Spherical Tokamak Japanese Journal of Applied Physics. 42: 7557-7563. DOI: 10.1143/Jjap.42.7557  0.412
2003 Mueller D, Ono M, Bell MG, Bell RE, Bitter M, Bourdelle C, Darrow DS, Efthimion PC, Fredrickson ED, Gates DA, Goldston RJ, Grisham LR, Hawryluk RJ, Hill KW, Hosea JC, ... ... Ejiri A, et al. Results of NSTX heating experiments Ieee Transactions On Plasma Science. 31: 60-67. DOI: 10.1109/Tps.2003.808890  0.529
2003 Sudo S, Nagayama Y, Peterson BJ, Kawahata K, Akiyama T, Ashikawa N, Emoto M, Goto M, Hamada Y, Ida K, Ido T, Iguchi H, Inagaki S, Isobe M, Kobuchi T, ... ... Ejiri A, et al. Recent diagnostic developments on LHD Plasma Physics and Controlled Fusion. 45: 1127-1142. DOI: 10.1088/0741-3335/45/7/307  0.403
2003 Ejiri A, Shiraiwa S, Takase Y, Yamada T, Nagashima Y, Kasahara H, Iijima D, Kobori Y, Nishi T, Taniguchi T, Aramasu M, Ohara S, Ushigome M, Yamagishi K. Ion temperature increase during MHD events on the TST-2 spherical tokamak Nuclear Fusion. 43: 547-552. DOI: 10.1088/0029-5515/43/7/306  0.335
2003 Motojima O, Ohyabu N, Komori A, Kaneko O, Yamada H, Kawahata K, Nakamura Y, Ida K, Akiyama T, Ashikawa N, Cooper WA, Ejiri A, Emoto M, Ezumi N, Funaba H, et al. Recent advances in the LHD experiment Nuclear Fusion. 43: 1674-1683. DOI: 10.1088/0029-5515/43/12/013  0.469
2003 Tsuzuki K, Kimura H, Kawashima H, Sato M, Kamiya K, Shinohara K, Ogawa H, Hoshino K, Bakhtiari M, Kasai S, Uehara K, Sasao H, Kusama Y, Isei N, Miura Y, ... ... Ejiri A, et al. High performance tokamak experiments with a ferritic steel wall on JFT-2M Nuclear Fusion. 43: 1288-1293. DOI: 10.1088/0029-5515/43/10/033  0.396
2003 Tokuzawa T, Kawahata K, Tanaka K, Nagayama Y, Kaneba T, Ejiri A. X-mode pulsed radar reflectometer for density fluctuation measurements on LHD Review of Scientific Instruments. 74: 1506-1509. DOI: 10.1063/1.1537880  0.351
2003 Nozato H, Morita S, Goto M, Ejiri A, Takase Y. Acceleration characteristics of spherical and nonspherical pellets by the LHD impurity pellet injector Review of Scientific Instruments. 74: 2032-2035. DOI: 10.1063/1.1535251  0.322
2003 Gilmore M, Peebles WA, Kubota S, Nguyen XV, Ejiri A. Progress toward a practical magnetic field diagnostic for low-field fusion plasmas based on dual mode correlation reflectometry Review of Scientific Instruments. 74: 1469-1472. DOI: 10.1063/1.1530390  0.389
2003 Shiraiwa S, Nagashima Y, Ushigome M, Yamada T, Taniguchi T, Ohara S, Yamagishi K, Kasahara H, Iijima D, Kobori Y, Nishi T, Aramasu M, Ejiri A, Takase Y. Electron Bernstein wave emission diagnostic assisted by reflectometry on TST-2 spherical tokamak Review of Scientific Instruments. 74: 1453-1456. DOI: 10.1063/1.1530386  0.397
2002 Synakowski EJ, Bell MG, Bell RE, Bush CE, Bourdelle C, Darrow D, Dorland W, Ejiri A, Fredrickson ED, Gates DA, Kaye SM, Kubota S, Kugel HW, LeBlanc BP, Maingi R, et al. Initial studies of core and edge transport of NSTX plasmas Plasma Physics and Controlled Fusion. 44: A165-A173. DOI: 10.1088/0741-3335/44/5A/313  0.434
2002 Ejiri A. Four-beam correlation method for local fluctuation measurements in plasmas Review of Scientific Instruments. 73: 1766-1774. DOI: 10.1063/1.1453500  0.354
2001 Yamada T, Ejiri A, Shiraiwa S, Takase Y. Two-chord interferometry using a pin switch for plasma density measurement Japanese Journal of Applied Physics. 40: 7083-7084. DOI: 10.1143/Jjap.40.7083  0.434
2001 Takase Y, Ejiri A, Kasuya N, Mashiko T, Shiraiwa S, Tozawa LM, Akiduki T, Kasahara H, Nagashima Y, Nozato H, Wada H, Yamada H, Yamada T, Yamagishi K. Initial results from the TST-2 spherical tokamak Nuclear Fusion. 41: 1543-1550. DOI: 10.1088/0029-5515/41/11/303  0.454
2001 Fujiwara M, Kawahata K, Ohyabu N, Kaneko O, Komori A, Yamada H, Ashikawa N, Baylor LR, Combs SK, DeVries PC, Emoto M, Ejiri A, Fisher PW, Funaba H, Goto M, et al. Overview of LHD experiments Nuclear Fusion. 41: 1355-1367. DOI: 10.1088/0029-5515/41/10/305  0.425
2001 Tokuzawa T, Kawahata K, Pavlichenko RO, Tanaka K, Ejiri A. Pulsed radar reflectometry on the LHD Review of Scientific Instruments. 72: 328-331. DOI: 10.1063/1.1326900  0.411
2001 Duorah S, Ejiri A, Lee S, Iguchi H, Fujisawa A, Kojima M, Matsuoka K, Ishiyama E, Hanada K, Shiraiwa S, Toyama H, Takase Y. Multilayer mirror based soft x-ray spectrometer as a high temperature plasma diagnostic Review of Scientific Instruments. 72: 1183-1187. DOI: 10.1063/1.1324745  0.558
2001 Sudo S, Nagayama Y, Emoto M, Goto M, Hamada Y, Ida K, Ido T, Iguchi H, Inagaki S, Isobe M, Kawahata K, Khlopenkov K, Masuzaki S, Minami T, Morita S, ... ... Ejiri A, et al. Overview of large helical device diagnostics (invited) Review of Scientific Instruments. 72: 483-491. DOI: 10.1063/1.1310581  0.391
2000 Ejiri A, Kawahata K. Feasibility of Microwave Transmissivity Measurement to Obtain Density Profile of Sheet Plasmas Japanese Journal of Applied Physics. 39: 2839-2842. DOI: 10.1143/Jjap.39.2839  0.455
2000 Lee S, Duorah S, Ejiri A, Iguchi H, Fujisawa A, Ishiyama E, Takase Y, Toyama H, Aramaki M, Kojima M, Okamura S, Matsuoka K. Multilayer mirror soft x-ray spectrometer for fast electron temperature measurement on the compact helical system Review of Scientific Instruments. 71: 1671-1674. DOI: 10.1063/1.1150517  0.56
1999 Fujisawa A, Iguchi H, Idei H, Kubo S, Matsuoka K, Okamura S, Tanaka K, Minami T, Ohdachi S, Morita S, Zushi H, Lee S, Osakabe M, Akiyama R, Yoshimura Y, ... ... Ejiri A, et al. Electric pulsation and profile quantization in CHS heliotron/torsatron Plasma Physics and Controlled Fusion. 41. DOI: 10.1088/0741-3335/41/3A/049  0.363
1999 Iiyoshi A, Komori A, Ejiri A, Emoto M, Funaba H, Goto M, Ida K, Idei H, Inagaki S, Kado S, Kaneko O, Kawahata K, Kobuchi T, Kubo S, Kumazawa R, et al. Overview of the large helical device project Nuclear Fusion. 39: 1245-1256. DOI: 10.1088/0029-5515/39/9Y/313  0.442
1999 Okamura S, Matsuoka K, Akiyama R, Darrow DS, Ejiri A, Fujisawa A, Fujiwara M, Goto M, Ida K, Idei H, Iguchi H, Inoue N, Isobe M, Itoh K, Kado S, et al. Confinement physics study in a small low aspect ratio helical device: CHS Nuclear Fusion. 39: 1337-1350. DOI: 10.1088/0029-5515/39/9Y/310  0.396
1999 Fujiwara M, Yamada H, Ejiri A, Emoto M, Funaba H, Goto M, Ida K, Idei H, Inagaki S, Kado S, Kaneko O, Kawahata K, Kobuchi T, Komori A, Kubo S, et al. Plasma confinement studies in LHD Nuclear Fusion. 39: 1659-1666. DOI: 10.1088/0029-5515/39/11Y/305  0.446
1999 Motojima O, Yamada H, Komori A, Ohyabu N, Kawahata K, Kaneko O, Masuzaki S, Ejiri A, Emoto M, Funaba H, Goto M, Ida K, Idei H, Inagaki S, Inoue N, et al. Initial physics achievements of large helical device experiments Physics of Plasmas. 6: 1843-1850. DOI: 10.1063/1.873443  0.416
1999 Nagasaki K, Ejiri A, Mizuuchi T, Obiki T, Okada H, Sano F, Zushi H, Besshou S, Kondo K. Effects of magnetic shear on electron cyclotron resonance heating in heliotron/torsatron configurations Physics of Plasmas. 6: 556-564. DOI: 10.1063/1.873200  0.426
1999 Kawahata K, Tanaka K, Ito Y, Ejiri A, Okajima S. Far infrared laser interferometer system on the Large Helical Device Review of Scientific Instruments. 70: 707-709. DOI: 10.1063/1.1149394  0.301
1999 Tanaka K, Kawahata K, Ejiri A, Howard J, Okajima S. Faraday rotation measurements on compact helical system by using a phase sensitive heterodyne polarimeter Review of Scientific Instruments. 70: 730-733. DOI: 10.1063/1.1149314  0.363
1999 Kawahata K, Tanaka K, Ito Y, Ejiri A, Wylde RJ. A two color millimeter-wave interferometer for the measurement of line integral electron density on large helical device Review of Scientific Instruments. 70: 695-698. DOI: 10.1063/1.1149274  0.365
1998 Minami K, Ejiri A, Tanaka K, Watanabe T. Linear Mode Conversion between Ordinary and Extraordinary Waves in Plasma with Large Magnetic Shear Japanese Journal of Applied Physics. 37: 6601-6608. DOI: 10.1143/Jjap.37.6601  0.435
1998 Fujisawa A, Iguchi H, Idei H, Kubo S, Matsuoka K, Okamura S, Tanaka K, Minami T, Ohdachi S, Morita S, Zushi H, Lee S, Osakabe M, Akiyama R, Yoshimura Y, ... ... Ejiri A, et al. Discovery Of Electric Pulsation In A Toroidal Helical Plasma Physical Review Letters. 81: 2256-2259. DOI: 10.1103/Physrevlett.81.2256  0.404
1998 Kuramoto H, Toi K, Hiraki N, Sato K, Xu J, Ejiri A, Narihara K, Seki T, Ohdachi S, Adati K, Akiyama R, Hamada Y, Hirokura S, Kawahata K, Kojima M. Study of toroidal current penetration during current ramp in JIPP T-IIU with fast response Zeeman polarimeter Nuclear Fusion. 38: 59-73. DOI: 10.1088/0029-5515/38/1/305  0.403
1998 Ejiri A, Kawahata K, Okajima S. Properties of extraordinary mode interferometry for plasma density measurements Review of Scientific Instruments. 69: 2349-2353. DOI: 10.1063/1.1148941  0.414
1998 Ogawa I, Idehara T, Sakai A, Yoshida K, Tsuchida T, Kawahata K, Ejiri A, Iguchi H, Tanaka K, Matsuoka K, Akiyama R, Osakabe M, Okamura S, Minami T, Takahashi C, et al. Production of an Intense, Well-Collimated Submillimeter Wave Beam and Its Application to Plasma Scattering Measurements International Journal of Infrared and Millimeter Waves. 19: 727-736. DOI: 10.1023/A:1022698309089  0.39
1997 Ejiri A, Shinohara K, Kawahata K. An algorithm to remove fringe jumps and its application to microwave reflectometry Plasma Physics and Controlled Fusion. 39: 1963-1980. DOI: 10.1088/0741-3335/39/12/003  0.311
1997 Narihara K, Toi K, Hamada Y, Yamauchi K, Adachi K, Yamada I, Sato KN, Kawahata K, Nishizawa A, Ohdachi S, Sato K, Seki T, Watari T, Xu J, Ejiri A, et al. Observation of dust particles by a laser scattering method in the JIPPT-IIU tokamak Nuclear Fusion. 37: 1177-1182. DOI: 10.1088/0029-5515/37/8/I12  0.327
1997 Hamada Y, Nishizawa A, Kawasumi Y, Fujisawa A, Narihara K, Ida K, Ejiri A, Ohdachi S, Kawahata K, Toi K, Sato K, Seki T, Iguchi H, Adachi K, Hidekuma S, et al. Density fluctuations in JIPP T-IIU tokamak plasmas measured by a heavy ion beam probe Nuclear Fusion. 37: 999-1014. DOI: 10.1088/0029-5515/37/7/I08  0.469
1997 Masuda S, Kumazawa R, Nishimura K, Mutoh T, Watari T, Simbo F, Seki T, Ido T, Akiyama R, Ando A, Ejiri A, Idei H, Ida K, Iguchi H, Isobe M, et al. Strong electron heating in CHS ICRF heating experiments Nuclear Fusion. 37: 53-68. DOI: 10.1088/0029-5515/37/1/I12  0.32
1997 Narihara K, Yamauchi K, Yamada I, Minami T, Adachi K, Ejiri A, Hamada Y, Ida K, Iguchi H, Kawahata K, Ozaki T, Toi K. Development of Thomson scattering diagnostics for the large helical device Fusion Engineering and Design. 67-72. DOI: 10.1016/S0920-3796(96)00689-8  0.309
1997 Sakakita H, Sato KN, Nomura I, Hamada Y, Nishizawa A, Kawasumi Y, Ida K, Xu J, Narihara K, Toi K, Ejiri A, Seki T, Adachi K, Iguchi H, Fujisawa A, et al. Measurement of ablation cloud parameters and plasma potential with on/off-axis pellet injection in the JIPP T-IIU tokamak Fusion Engineering and Design. 329-332. DOI: 10.1016/S0920-3796(96)00655-2  0.418
1997 Tanaka K, Ejiri A, Kawahata K, Okajima S, Matsuoka K, Okamura S, Nishimura K, Akiyama R, Ida K, Idei H, Iguchi H, Inoue N, Kubo S, Kumazawa R, Morita S, et al. Temporal evolutions of electron density profiles of CHS and its transport aspects Fusion Engineering and Design. 399-401. DOI: 10.1016/S0920-3796(96)00648-5  0.369
1997 Ejiri A, Kawahata K, Tanaka K. Various types of microwave reflectometer for density fluctuation measurements Fusion Engineering and Design. 429-432. DOI: 10.1016/S0920-3796(96)00604-7  0.312
1997 Ogawa I, Iwata M, Idehara T, Kawahata K, Iguchi H, Ejiri A. Plasma scattering measurement using a submillimeter wave gyrotron (gyrotron FU-II) as a power source Fusion Engineering and Design. 34: 455-458. DOI: 10.1016/S0920-3796(96)00601-1  0.414
1997 Kitachi K, Oike T, Ohdachi S, Toi K, Akiyama R, Ejiri A, Hamada Y, Kuramoto H, Narihara K, Seki T. Measurement of magnetic field fluctuations within last closed flux surface with movable magnetic probe array in the JIPP T-IIU tokamak Fusion Engineering and Design. 733-736. DOI: 10.1016/S0920-3796(96)00552-2  0.379
1997 Kuramoto H, Hiraki N, Moriyama S, Toi K, Sato K, Narihara K, Ejiri A, Seki T. Measurement of the poloidal magnetic field with high time resolution Zeeman polarimeter in the JIPP T-IIU tokamak Fusion Engineering and Design. 285-288. DOI: 10.1016/S0920-3796(96)00537-6  0.416
1997 Xu J, Ida K, Toi K, Ejiri A, Narihara K, Nishizawa A, Seki T, Akiyarna A, Fujita J. Measurement of motional Stark spectrum of a neutral beam emission in JIPP T-IIU plasma Fusion Engineering and Design. 293-296. DOI: 10.1016/S0920-3796(96)00536-4  0.389
1996 Morisaki T, Komori A, Toi K, Ando A, Ejiri A, Ida K, Iguchi H, Kawai Y, Matsuoka K, Morita S, Motojima O, Nishimura K, Okamura S, Sakakibara S, Takahashi C, et al. Measurement of Edge Density Profiles and Fluctuations in the H-Mode Discharge of the Compact Helical System (CHS) with a Thermal Neutral Lithium Beam Probe Journal of the Physical Society of Japan. 65: 133-138. DOI: 10.1143/Jpsj.65.133  0.363
1996 Toi K, Ohdachi S, Morisaki T, Sakakibara S, Morita S, Minami T, Tanaka K, Yamada H, Okamura S, Nishimura K, Matsuoka K, Yamada I, Akiyama R, Ando A, Ejiri A, et al. Transition behaviour in the H-mode of the CHS heliotron/torsatron Plasma Physics and Controlled Fusion. 38: 1289-1293. DOI: 10.1088/0741-3335/38/8/024  0.308
1996 Hamada Y, Sato KN, Sakakita H, Nishizawa A, Kawasumi Y, Liang R, Kawahata K, Ejiri A, Toi K, Narihara K, Sato K, Seki T, Iguchi H, Fujisawa A, Adachi K, et al. Large potential change induced by pellet injection in JIPP T-IIU tokamak plasmas Nuclear Fusion. 36: 1047-1052. DOI: 10.1088/0029-5515/36/8/I08  0.442
1996 Hamada Y, Nishizawa A, Kawasumi Y, Kawahata K, Itoh K, Ejiri A, Toi K, Narihara K, Sato K, Seki T, Iguchi H, Fujisawa A, Adachi K, Hidekuma S, Hirokura S, et al. Fast potential change during sawteeth in JIPP T-IIU tokamak plasmas Nuclear Fusion. 36: 515-520. DOI: 10.1088/0029-5515/36/4/I11  0.448
1996 Fujiwara M, Yamazaki K, Okamoto M, Todoroki J, Amano T, Watanabe T, Hayashi T, Sanuki H, Nakajima N, Itoh K, Sugama H, Ichiguchi K, Murakami S, Motojima O, Yamamoto J, ... ... Ejiri A, et al. Large Helical Device (LHD) program Journal of Fusion Energy. 15: 7-153. DOI: 10.1007/Bf02266926  0.35
1995 Ejiri A, Ohdachi S, Oikawa T, Shinohara S, Toyama H, Yamagishi K, Miyamoto K. Temperature scalings in the REPUTE-1 reversed field pinch plasma Fusion Technology. 27: 297-300. DOI: 10.13182/Fst95-A11947091  0.702
1995 Ozaki T, Morita S, Kumazawa R, Nishimura K, Masuda S, Ejiri A, Minami T, Yamada I, Narihara K, Okamura S, Matsuoka K, Sagara A, Idei H, Kubo S, Tanaka K, et al. Measurements of H/(H+D) ratios in ICRF heating experiments of CHS Fusion Technology. 27: 244-247. DOI: 10.13182/Fst95-A11947079  0.329
1995 Sakakibara S, Yamada H, Toi K, Ejiri A, Ida K, Iguchi H, Matsuoka K, Minami T, Morisaki T, Morita S, Motojima O, Narihara K, Nishimura K, Okamura S, Tanaka K, et al. Magnetic Configuration Effect on MHD Modes in NBI Heated Plasmas in CHS Fusion Technology. 27: 231-234. DOI: 10.13182/Fst95-A11947076  0.404
1995 Okamura S, Nakajima N, Yamada H, Matsuoka K, Nishimura K, Ando A, Ejiri A, Ida K, Iguchi H, Minami T, Morita S, Narihara K, Xu J, Yamada I, Sakakibara S. MHD stability of high-beta plasmas in CHS Fusion Technology. 27: 178-181. DOI: 10.13182/Fst95-A11947063  0.364
1995 Sakakibara S, Yamada H, Toi K, Ejiri A, Ando A, Iguchi H, Matsuoka K, Morita S, Motojima O, Nishimura K, Okamura S, Tanaka K. Effect of Plasma Current on Magnetohydrodynamic Modes in Neutral Beam Heated Plasmas in Compact Helical System Japanese Journal of Applied Physics. 34. DOI: 10.1143/Jjap.34.L252  0.425
1995 Ejiri A, Miyamoto K. Ion-heating model during magnetic reconnection in reversed-field pinch plasmas Plasma Physics and Controlled Fusion. 37: 43-56. DOI: 10.1088/0741-3335/37/1/004  0.409
1995 Nagasaki K, Ejiri A. Launching conditions for electron cyclotron heating in a sheared magnetic field Nuclear Fusion. 35: 609-612. DOI: 10.1088/0029-5515/35/5/I10  0.404
1995 Okamura S, Matsuoka K, Nishimura K, Tsumori K, Akiyama R, Sakakibara S, Yamada H, Morita S, Morisaki T, Nakajima N, Tanaka K, Xu J, Ida K, Iguchi H, Lazaros A, ... ... Ejiri A, et al. High beta discharges with neutral beam injection in CHS Nuclear Fusion. 35: 283-296. DOI: 10.1088/0029-5515/35/3/I03  0.416
1995 Nagasaki K, Isayama A, Ejiri A. Application of a grating polarizer to the 106.4 GHz ECH system on Heliotron‐E Review of Scientific Instruments. 66: 3432-3437. DOI: 10.1063/1.1145518  0.361
1995 Ejiri A, Oikawa T, Toyama H. Measurement of velocity fluctuations in plasmas by a conventional visible spectrometer Review of Scientific Instruments. 66: 4600-4606. DOI: 10.1063/1.1145296  0.617
1995 Matsuoka K, Okamura S, Nishimura K, Tsumori K, Akiyama R, Yamada H, Sakakibara S, Lazaros A, Xu J, Ida K, Tanaka K, Morisaki T, Morita S, Arimoto H, Ejiri A, et al. High β experiment and confinement regimes in a compact helical system Fusion Engineering and Design. 26: 135-140. DOI: 10.1016/0920-3796(94)00178-A  0.356
1994 Sakakibara S, Yamada H, Ejiri A, Ida K, Matsuoka K, Morisaki T, Morita S, Motojima O, Nishimura K, Okamura S, Takahashi C, Toi K, Watanabe K. Experimental Observation of Magnetic Fluctuations in NBI Heated Plasmas in CHS Journal of the Physical Society of Japan. 63: 4406-4421. DOI: 10.1143/Jpsj.63.4406  0.42
1994 Hamada Y, Nishizawa A, Kawasumi Y, Narihara K, Sato K, Seki T, Toi K, Iguchi H, Fujisawa A, Adachi K, Ejiri A, Hidekuma S, Hirokura S, Ida K, Koong J, et al. Measurement of profiles of the space potential in JIPP T-IIU tokamak plasmas by slow poloidal and fast toroidal sweeps of a heavy ion beam Plasma Physics and Controlled Fusion. 36: 1743-1761. DOI: 10.1088/0741-3335/36/11/004  0.444
1994 Ejiri A, Ohdachi S, Oikawa T, Shinohara S, Yamagishi K, Toyama H, Miyamoto K. Magnetic and velocity fluctuation measurements in the REPUTE-1 reversed-field pinch plasma Physics of Plasmas. 1: 1177-1185. DOI: 10.1063/1.870714  0.758
1992 Shinohara S, Yamagishi K, Ohdachi S, Ejiri A, Toyama H, Miyamoto K. First Results of Boronization in REPUTE-1 RFP Journal of the Physical Society of Japan. 61: 3030-3033. DOI: 10.1143/Jpsj.61.3030  0.709
1992 Shinohara S, Yamagishi K, Ohdachi S, Ejiri A, Mayanagi K, Shimazu Y, Miyamoto K. Wall conditioning and its effect on RFP plasma performance in REPUTE-1 Plasma Physics and Controlled Fusion. 34: 627-633. DOI: 10.1088/0741-3335/34/4/019  0.421
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