List of selected papers
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Collisional-energy-cascade model for nonthermal velocity distributions of neutral atoms in plasmas
Keisuke Fujii
Physical Review E 108, 025204 (2023)
10.1103/PhysRevE.108.025204 -
Power-Law Intensity Distribution of γ-Decay Cascades: Nuclear Structure as a Scale-Free Random Network
Keisuke Fujii, Julian C. Berengut
Physical Review Letters 126, 102502 (2021)
10.1103/PhysRevLett.126.102502 -
Simple Explanation for the Observed Power Law Distribution of Line Intensity in Complex Many-Electron Atoms
Keisuke Fujii, Julian C. Berengut
Physical Review Letters 124, 185002 (2020)
10.1103/physrevlett.124.185002 -
Study of neutral hydrogen transport in LHD core plasmas based on high dynamic-range Balmer-αspectroscopy
K. Fujii, M. Goto, S. Morita, The LHD Experiment Group
Nuclear Fusion 55, 063029 (2015)
10.1088/0029-5515/55/6/063029 -
Development of a high dynamic range spectroscopic system for observation of neutral hydrogen atom density distribution in Large Helical Device core plasma
K. Fujii, S. Atsumi, S. Watanabe, T. Shikama, M. Goto, S. Morita, M. Hasuo
Review of Scientific Instruments 85, 023502 (2014)
10.1063/1.4863650
List of papers (first- and corresponding-author)
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Conceptual design of a Doppler spectrometer for 102 m/s cross-field flows in tokamak divertors
K. Fujii, R. Sano, T. Nakano, G. Ronchi, J.-S. Park, J. D. Lore, M. Shafer, T. M. Biewer
Review of Scientific Instruments 95, 073527 (2024)
10.1063/5.0219456 -
Plasma-parameter dependence of ro-vibrational temperatures for H2 in LHD divertor
Keisuke Fujii, Tsubasa Oshioka, Atsushi Niihama, Arseniy Kuzmin, Taiichi Shikama, Masahiro Kobayashi, Masahiro Hasuo
Journal of Quantitative Spectroscopy and Radiative Transfer 310, 108751 (2023)
10.1016/j.jqsrt.2023.108751 -
Collisional-energy-cascade model for nonthermal velocity distributions of neutral atoms in plasmas
Keisuke Fujii
Physical Review E 108, 025204 (2023)
10.1103/PhysRevE.108.025204 -
A simple data-driven level finding method of many-electron atoms and heavy nuclei based on statistical outlier detection
Kazuaki Hongu, Keisuke Fujii
Journal of Physics D: Applied Physics 56, 244002 (2023)
10.1088/1361-6463/acc66f -
Power-Law Intensity Distribution of γ-Decay Cascades: Nuclear Structure as a Scale-Free Random Network
Keisuke Fujii, Julian C. Berengut
Physical Review Letters 126, 102502 (2021)
10.1103/PhysRevLett.126.102502 -
Population kinetics of many-electron atoms in ionizing plasmas studied using a continuous collisional radiative model
Akira Nishio, Julian C. Berengut, Masahiro Hasuo, Keisuke Fujii
Physical Review E 102, 053211 (2020)
10.1103/PhysRevE.102.053211 -
Simple Explanation for the Observed Power Law Distribution of Line Intensity in Complex Many-Electron Atoms
Keisuke Fujii, Julian C. Berengut
Physical Review Letters 124, 185002 (2020)
10.1103/physrevlett.124.185002 -
Robust Regression for Automatic Fusion Plasma Analysis Based on Generative Modeling
K. Fujii, C. Suzuki, M. Hasuo
IEEE Transactions on Plasma Science 47, 3305-3314 (2019)
10.1109/TPS.2019.2921073 -
Machine Learning of Noise in LHD Thomson Scattering System
Keisuke Fujii, Ichihiro Yamada, Masahiro Hasuo
Fusion Science and Technology 74, 57-64 (2018)
10.1080/15361055.2017.1396179 -
Experimental evaluation of fractional abundance data for W23+–W28+
Keisuke Fujii, Daiji Kato, Nobuyuki Nakamura, Motoshi Goto, Shigeru Morita, Masahiro Hasuo
Journal of Physics B: Atomic, Molecular and Optical Physics 50, 055004 (2017)
10.1088/1361-6455/50/5/055004 -
Data-driven sensitivity inference for Thomson scattering electron density measurement systems
Keisuke Fujii, Ichihiro Yamada, Masahiro Hasuo
Review of Scientific Instruments 88, 013508 (2017)
10.1063/1.4974344 -
Inversion Methods of the Balmer-α Line Profile for Hydrogen Atom Density Evaluation in High-Temperature Plasmas
Keisuke Fujii, Motoshi Goto, Shigeru Morita, Masahiro Hasuo
Fusion Science and Technology 69, 514-525 (2016)
10.13182/FST15-168 -
Visible emission spectroscopy of highly charged tungsten ions in LHD: II. Evaluation of tungsten ion temperature
K Fujii, Y Takahashi, Y Nakai, D Kato, M Goto, S Morita, M Hasuo
Physica Scripta 90, 125403 (2015)
10.1088/0031-8949/90/12/125403 -
Visible emission spectroscopy of highly charged tungsten ions in LHD: I. Survey of new visible emission lines
M Shinohara, K Fujii, D Kato, N Nakamura, M Goto, S Morita, M Hasuo
Physica Scripta 90, 125402 (2015)
10.1088/0031-8949/90/12/125402 -
Study of neutral hydrogen transport in LHD core plasmas based on high dynamic-range Balmer-αspectroscopy
K. Fujii, M. Goto, S. Morita, The LHD Experiment Group
Nuclear Fusion 55, 063029 (2015)
10.1088/0029-5515/55/6/063029 -
Development of a high dynamic range spectroscopic system for observation of neutral hydrogen atom density distribution in Large Helical Device core plasma
K. Fujii, S. Atsumi, S. Watanabe, T. Shikama, M. Goto, S. Morita, M. Hasuo
Review of Scientific Instruments 85, 023502 (2014)
10.1063/1.4863650 -
Hydrogen transport diagnostics by atomic and molecular emission line profiles simultaneously measured for large helical device
K. Fujii, T. Shikama, M. Goto, S. Morita, M. Hasuo
Physics of Plasmas 20, 012514 (2013)
10.1063/1.4789454 -
A Collisional-Radiative Model for Hydrogen Atom Including Velocity Changing Collisions
Keisuke FUJII, Taiichi SHIKAMA, Keiji SAWADA, Motoshi GOTO, Shigeru MORITA, Masahiro HASUO
Plasma and Fusion Research 6, 2401125-2401125 (2011)
10.1585/pfr.6.2401125 -
Kinetic energy measurement of hydrogen in LHD peripheral plasma with a multi-wavelength-range fine-resolution spectrometer
Keisuke Fujii, Keisuke Mizushiri, Tomomi Nishioka, Taiichi Shikama, Atsushi Iwamae, Motoshi Goto, Shigeru Morita, Masahiro Hasuo
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 623, 690-692 (2010)
10.1016/j.nima.2010.02.100 -
Development of multiwavelength-range fine-resolution spectrometer for hydrogen emissions and its application to large helical device periphery plasmas
K. Fujii, K. Mizushiri, T. Nishioka, T. Shikama, A. Iwamae, M. Goto, S. Morita, S Kado, K. Sawada, M. Hasuo
Review of Scientific Instruments 81, 033106 (2010)
10.1063/1.3356730
List of published papers
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Atomic and ionic hydrogen flux probe for quantitative in-situ monitoring of hydrogen recycling
A. Kuzmin, K. Miura, M. Kobayashi, K. Hanada, K. Fujii, T. Shikama, M. Hasuo, H. Zushi
Fusion Engineering and Design 189, 113462 (2023)
10.1016/j.fusengdes.2023.113462 -
Use of machine learning for a helium line intensity ratio method in Magnum-PSI
Shin Kajita, Sho Iwai, Hirohiko Tanaka, Daisuke Nishijima, Keisuke Fujii, Hennie van der Meiden, Noriyasu Ohno
Nuclear Materials and Energy 33, 101281 (2022)
10.1016/j.nme.2022.101281 -
Modeling the wavelength of unresolved transition arrays in the extreme ultraviolet region from Sn to Hf ions by combining theoretical and experimental spectral data
A. Sasaki, K. Fujii, I. Murakami, H. A. Sakaue, T. Nishikawa, H. Ohashi, N. Nakamura
AIP Advances 12, 025309 (2022)
10.1063/5.0077130 -
Comprehensive Laboratory Measurements Resolving the LMM Dielectronic Recombination Satellite Lines in Ne-like Fe xvii Ions
Filipe Grilo, Chintan Shah, Steffen Kühn, René Steinbrügge, Keisuke Fujii, José Marques, Ming Feng Gu, José Paulo Santos, José R. Crespo López-Urrutia, Pedro Amaro
The Astrophysical Journal 913, 140 (2021)
10.3847/1538-4357/abf737 -
Ro-vibrational population distribution in the ground state of hydrogen isotopologues in LHD peripheral plasmas deduced from emission spectroscopy
Hiroki Ishihara, Arseniy Kuzmin, Masahiro Kobayashi, Taiichi Shikama, Keiji Sawada, Seiki Saito, Hiroaki Nakamura, Keisuke Fujii, Masahiro Hasuo
Journal of Quantitative Spectroscopy and Radiative Transfer 267, 107592 (2021)
10.1016/j.jqsrt.2021.107592 -
Application of multiple regression for sensitivity analysis of helium line emissions to the electron density and temperature in Magnum-PSI
Shin Kajita, Daisuke Nishijima, Keisuke Fujii, Gijs Akkermans, Hennie van der Meiden
Plasma Physics and Controlled Fusion 63, 055018 (2021)
10.1088/1361-6587/abf36e -
On the triad transfer analysis of plasma turbulence: symmetrization, coarse graining, and directional representation
S Maeyama, M Sasaki, K Fujii, T Kobayashi, R O Dendy, Y Kawachi, H Arakawa, S Inagaki
New Journal of Physics 23, 043049 (2021)
10.1088/1367-2630/abeffc -
Compressing the time series of five dimensional distribution function data from gyrokinetic simulation using principal component analysis
Yuuichi Asahi, Keisuke Fujii, Dennis Manuel Heim, Shinya Maeyama, Xavier Garbet, Virginie Grandgirard, Yanick Sarazin, Guilhem Dif-Pradalier, Yasuhiro Idomura, Masatoshi Yagi
Physics of Plasmas 28, 012304 (2021)
10.1063/5.0023166 -
Plasma Spectroscopy on an Aluminum-Pellet Ablation Cloud in an LHD Plasma with an Echelle Spectrometer
Hirotaka Tanaka, Keisuke Fujii, Taiichi Shikama, Shigeru Morita, Motoshi Goto, Masahiro Hasuo
Atoms 8, 81 (2020)
10.3390/atoms8040081 -
Observation of strong two-electron–one-photon transitions in few-electron ions
M. Togawa, S. Kühn, C. Shah, P. Amaro, R. Steinbrügge, J. Stierhof, N. Hell, M. Rosner, K. Fujii, M. Bissinger, R. Ballhausen, M. Hoesch, J. Seltmann, S. Park, F. Grilo, F. S. Porter, J. P. Santos, M. Chung, T. Stöhlker, J. Wilms, T. Pfeifer, G. V. Brown, M. A. Leutenegger, S. Bernitt, J. R. Crespo López-Urrutia
Physical Review A 102, 052831 (2020)
10.1103/PhysRevA.102.052831 -
High Resolution Photoexcitation Measurements Exacerbate the Long-Standing Fe XVII Oscillator Strength Problem
Steffen Kühn, Chintan Shah, José R. Crespo López-Urrutia, Keisuke Fujii, René Steinbrügge, Jakob Stierhof, Moto Togawa, Zoltán Harman, Natalia S. Oreshkina, Charles Cheung, Mikhail G. Kozlov, Sergey G. Porsev, Marianna S. Safronova, Julian C. Berengut, Michael Rosner, Matthias Bissinger, Ralf Ballhausen, Natalie Hell, SungNam Park, Moses Chung, Moritz Hoesch, Jörn Seltmann, Andrey S. Surzhykov, Vladimir A. Yerokhin, Jörn Wilms, F. Scott Porter, Thomas Stöhlker, Christoph H. Keitel, Thomas Pfeifer, Gregory V. Brown, Maurice A. Leutenegger, Sven Bernitt
Physical Review Letters 124, 225001 (2020)
10.1103/PhysRevLett.124.225001 -
Emission spectroscopy of He lines in high-density plasmas in Magnum-PSI
Shin Kajita, Gijs Akkermans, Keisuke Fujii, Hennie van der Meiden, M. C. M. van de Sanden
AIP Advances 10, 025225 (2020)
10.1063/1.5143481 -
Isotope Effect on Energy Confinement Time and Thermal Transport in Neutral-Beam-Heated Stellarator-Heliotron Plasmas
H. Yamada, K. Tanaka, R. Seki, C. Suzuki, K. Ida, K. Fujii, M. Goto, S. Murakami, M. Osakabe, T. Tokuzawa, M. Yokoyama, M. Yoshinuma, LHD Experiment Group
Physical Review Letters 123, 185001 (2019)
10.1103/PhysRevLett.123.185001 -
Atomic kinetics calculations of complex highly-charged ions in plasmas in non-local thermodynamic equilibrium by using a Monte-Carlo approach
Akira Sasaki, Richard M. More, Keisuke Fujii, Daiji Kato, Izumi Murakami
High Energy Density Physics 32, 1-7 (2019)
10.1016/j.hedp.2019.04.005 -
The isotope effect on impurities and bulk ion particle transport in the Large Helical Device
K. Ida, R. Sakamoto, M. Yoshinuma, K. Yamazaki, T. Kobayashi, Y. Fujiwara, C. Suzuki, K. Fuji, J. Chen, I. Murakami, M. Emoto, R. Mackenbach, H. Yamada, G. Motojima, S. Masuzaki, K. Mukai, K. Nagaoka, H. Takahashi, T. Oishi, M. Goto, S. Morita, N. Tamura, H. Nakano, S. Kamio, R. Seki, M. Yokoyama, S. Murakami, M. Nunami, M. Nakata, T. Morisaki, M. Osakabe, the LHD Experiment Group
Nuclear Fusion 59, 056029 (2019)
10.1088/1741-4326/ab0e41 -
Spatially resolved laser absorption spectroscopy on a micro-hollow cathode He plasma
Keisuke Ueno, Kenta Kamebuchi, Jiro Kakutani, Leo Matsuoka, Shinichi Namba, Keisuke Fujii, Taiichi Shikama, Masahiro Hasuo
Japanese Journal of Applied Physics 58, SAAB03 (2019)
10.7567/1347-4065/aaec19 -
Analysis of the impurity flow velocity in a wide plasma parameter range for deuterium and hydrogen plasmas in the divertor legs of the stochastic layer in LHD
A. Kuzmin, M. Kobayashi, T. Nakano, G. Kawamura, M. Hasuo, K. Fujii, T. Morisaki
Nuclear Materials and Energy 17, 217-221 (2018)
10.1016/j.nme.2018.11.009 -
Laser absorption spectroscopy for measurement of He metastable atoms of a microhollow cathode plasma
Keisuke Ueno, Kenta Kamebuchi, Jiro Kakutani, Leo Matsuoka, Shinichi Namba, Keisuke Fujii, Taiichi Shikama, Masahiro Hasuo
Japanese Journal of Applied Physics 57, 01AA03 (2018)
10.7567/jjap.57.01aa03 -
Measurements of the Impurity Flow Velocity and Temperature in Deuterium and Hydrogen Plasmas in the Divertor Legs of the Stochastic Layer in LHD
Arseniy KUZMIN, Masahiro KOBAYASHI, Tomohide NAKANO, Masahiro HASUO, Keisuke FUJII, Motoshi GOTO, Taiichi SHIKAMA, Tomohiro MORISAKI, the LHD Experiment Group
Plasma and Fusion Research 13, 3402058-3402058 (2018)
10.1585/pfr.13.3402058 -
Spatially Resolved Measurements of Metastable Atom Density and Electric Field Strength in a Microhollow Cathode Helium Plasma by Laser Absorption Spectroscopy
Keisuke UENO, Kenta KAMEBUCHI, Jiro KAKUTANI, Leo MATSUOKA, Shinichi NAMBA, Keisuke FUJII, Taiichi SHIKAMA, Masahiro HASUO
Plasma and Fusion Research 13, 3406070-3406070 (2018)
10.1585/pfr.13.3406070 -
Extension of the operational regime of the LHD towards a deuterium experiment
Y. Takeiri, T. Morisaki, M. Osakabe, M. Yokoyama, S. Sakakibara, H. Takahashi, Y. Nakamura, T. Oishi, G. Motojima, S. Murakami, K. Ito, A. Ejiri, S. Imagawa, S. Inagaki, M. Isobe, S. Kubo, S. Masamune, T. Mito, I. Murakami, K. Nagaoka, K. Nagasaki, K. Nishimura, M. Sakamoto, R. Sakamoto, T. Shimozuma, K. Shinohara, H. Sugama, K.Y. Watanabe, J.W. Ahn, N. Akata, T. Akiyama, N. Ashikawa, J. Baldzuhn, T. Bando, E. Bernard, F. Castejón, H. Chikaraishi, M. Emoto, T. Evans, N. Ezumi, K. Fujii, H. Funaba, M. Goto, T. Goto, D. Gradic, Y. Gunsu, S. Hamaguchi, H. Hasegawa, Y. Hayashi, C. Hidalgo, T. Higashiguchi, Y. Hirooka, Y. Hishinuma, R. Horiuchi, K. Ichiguchi, K. Ida, T. Ido, H. Igami, K. Ikeda, S. Ishiguro, R. Ishizaki, A. Ishizawa, A. Ito, Y. Ito, A. Iwamoto, S. Kamio, K. Kamiya, O. Kaneko, R. Kanno, H. Kasahara, D. Kato, T. Kato, K. Kawahata, G. Kawamura, M. Kisaki, S. Kitajima, W.H. Ko, M. Kobayashi, S. Kobayashi, T. Kobayashi, K. Koga, A. Kohyama, R. Kumazawa, J.H. Lee, D. López-Bruna, R. Makino, S. Masuzaki, Y. Matsumoto, H. Matsuura, O. Mitarai, H. Miura, J. Miyazawa, N. Mizuguchi, C. Moon, S. Morita, T. Moritaka, K. Mukai, T. Muroga, S. Muto, T. Mutoh, T. Nagasaka, Y. Nagayama, N. Nakajima, Y. Nakamura, H. Nakanishi, H. Nakano, M. Nakata, Y. Narushima, D. Nishijima, A. Nishimura, S. Nishimura, T. Nishitani, M. Nishiura, Y. Nobuta, H. Noto, M. Nunami, T. Obana, K. Ogawa, S. Ohdachi, M. Ohno, N. Ohno, H. Ohtani, M. Okamoto, Y. Oya, T. Ozaki, B.J. Peterson, M. Preynas, S. Sagara, K. Saito, H. Sakaue, A. Sanpei, S. Satake, M. Sato, T. Saze, O. Schmitz, R. Seki, T. Seki, I. Sharov, A. Shimizu, M. Shiratani, M. Shoji, C. Skinner, R. Soga, T. Stange, C. Suzuki, Y. Suzuki, S. Takada, K. Takahata, A. Takayama, S. Takayama, Y. Takemura, Y. Takeuchi, H. Tamura, N. Tamura, H. Tanaka, K. Tanaka, M. Tanaka, T. Tanaka, Y. Tanaka, S. Toda, Y. Todo, K. Toi, M. Toida, M. Tokitani, T. Tokuzawa, H. Tsuchiya, T. Tsujimura, K. Tsumori, S. Usami, J.L. Velasco, H. Wang, T.-H. Watanabe, T. Watanabe, J. Yagi, M. Yajima, H. Yamada, I. Yamada, O. Yamagishi, N. Yamaguchi, Y. Yamamoto, N. Yanagi, R. Yasuhara, E. Yatsuka, N. Yoshida, M. Yoshinuma, S. Yoshimura, Y. Yoshimura
Nuclear Fusion 57, 102023 (2017)
10.1088/1741-4326/aa7fc2 -
Behavior of 23S metastable state He atoms in low-temperature recombining plasmas
Shin Kajita, Tadashi Tsujihara, Mitsutoshi Aramaki, Hennie van der Meiden, Hiroshi Oshima, Noriyasu Ohno, Hirohiko Tanaka, Ryo Yasuhara, Tsuyoshi Akiyama, Keisuke Fujii, Taiichi Shikama
Physics of Plasmas 24, 073301 (2017)
10.1063/1.4990077 -
Comparison of Ion Internal Transport Barrier Formation between Hydrogen and Helium Dominated Plasmas
Kenichi NAGAOKA, Hiromi TAKAHASHI, Kenji TANAKA, Masaki OSAKABE, Sadayoshi MURAKAMI, Shogo MAETA, Masayuki YOKOYAMA, Keisuke FUJII, Haruhisa NAKANO, Hiroshi YAMADA, Yasuhiko TAKEIRI, Katsumi IDA, Mikiro YOSHINUMA, the LHD Experiment Group
Plasma and Fusion Research 11, 2402106-2402106 (2016)
10.1585/pfr.11.2402106 -
Integrated discharge scenario for high-temperature helical plasma in LHD
K. Nagaoka, H. Takahashi, S. Murakami, H. Nakano, Y. Takeiri, H. Tsuchiya, M. Osakabe, K. Ida, M. Yokoyama, M. Yoshinuma, S. Morita, M. Goto, T. Oishi, N. Pablant, K. Fujii, K. Tanaka, N. Tamura, Y. Nakamura, X. Du, T. Ido, A. Shimizu, S. Kubo, H. Igami, R. Seki, C. Suzuki, Y. Suzuki, K. Tsumori, K. Ikeda, M. Kisaki, Y. Yoshimura, T. Shimozuma, T. Seki, K. Saito, H. Kasahara, S. Kamio, T. Mutoh, O. Kaneko, H. Yamada, A. Komori
Nuclear Fusion 55, 113020 (2015)
10.1088/0029-5515/55/11/113020 -
Overview of transport and MHD stability study: focusing on the impact of magnetic field topology in the Large Helical Device
K. Ida, K. Nagaoka, S. Inagaki, H. Kasahara, T. Evans, M. Yoshinuma, K. Kamiya, S. Ohdach, M. Osakabe, M. Kobayashi, S. Sudo, K. Itoh, T. Akiyama, M. Emoto, A. Dinklage, X. Du, K. Fujii, M. Goto, T. Goto, M. Hasuo, C. Hidalgo, K. Ichiguchi, A. Ishizawa, M. Jakubowski, G. Kawamura, D. Kato, S. Morita, K. Mukai, I. Murakami, S. Murakami, Y. Narushima, M. Nunami, N. Ohno, N. Pablant, S. Sakakibara, T. Seki, T. Shimozuma, M. Shoji, K. Tanaka, T. Tokuzawa, Y. Todo, H. Wang, M. Yokoyama, H. Yamada, Y. Takeiri, T. Mutoh, S. Imagawa, T. Mito, Y. Nagayama, K.Y. Watanabe, N. Ashikawa, H. Chikaraishi, A. Ejiri, M. Furukawa, T. Fujita, S. Hamaguchi, H. Igami, M. Isobe, S. Masuzaki, T. Morisaki, G. Motojima, K. Nagasaki, H. Nakano, Y. Oya, C. Suzuki, Y. Suzuki, R. Sakamoto, M. Sakamoto, A. Sanpei, H. Takahashi, H. Tsuchiya, M. Tokitani, Y. Ueda, Y. Yoshimura, S. Yamamoto, K. Nishimura, H. Sugama, T. Yamamoto, H. Idei, A. Isayama, S. Kitajima, S. Masamune, K. Shinohara, P.S. Bawankar, E. Bernard, M. von Berkel, H. Funaba, X.L. Huang, T. Ii, T. Ido, K. Ikeda, S. Kamio, R. Kumazawa, T. Kobayashi, C. Moon, S. Muto, J. Miyazawa, T. Ming, Y. Nakamura, S. Nishimura, K. Ogawa, T. Ozaki, T. Oishi, M. Ohno, S. Pandya, A. Shimizu, R. Seki, R. Sano, K. Saito, H. Sakaue, Y. Takemura, K. Tsumori, N. Tamura, H. Tanaka, K. Toi, B. Wieland, I. Yamada, R. Yasuhara, H. Zhang, O. Kaneko, A. Komori, Collaborators
Nuclear Fusion 55, 104018 (2015)
10.1088/0029-5515/55/10/104018 -
Effect of the RF wall conditioning on the high performance plasmas in the Large Helical Device
H. Takahashi, M. Osakabe, K. Nagaoka, H. Nakano, M. Tokitani, K. Fujii, S. Murakami, Y. Takeiri, T. Seki, K. Saito, H. Kasahara, R. Seki, S. Kamio, S. Masuzaki, T. Mutoh
Journal of Nuclear Materials 463, 1100-1103 (2015)
10.1016/j.jnucmat.2014.11.131 -
Flow damping due to stochastization of the magnetic field
K. Ida, M. Yoshinuma, H. Tsuchiya, T. Kobayashi, C. Suzuki, M. Yokoyama, A. Shimizu, K. Nagaoka, S. Inagaki, K. Itoh, T. Akiyama, M. Emoto, T. Evans, A. Dinklage, X. Du, K. Fujii, M. Goto, T. Goto, M. Hasuo, C. Hidalgo, K. Ichiguchi, A. Ishizawa, M. Jakubowski, K. Kamiya, H. Kasahara, G. Kawamura, D. Kato, M. Kobayashi, S. Morita, K. Mukai, I. Murakami, S. Murakami, Y. Narushima, M. Nunami, S. Ohdach, N. Ohno, M. Osakabe, N. Pablant, S. Sakakibara, T. Seki, T. Shimozuma, M. Shoji, S. Sudo, K. Tanaka, T. Tokuzawa, Y. Todo, H. Wang, H. Yamada, Y. Takeiri, T. Mutoh, S. Imagawa, T. Mito, Y. Nagayama, K. Y. Watanabe, N. Ashikawa, H. Chikaraishi, A. Ejiri, M. Furukawa, T. Fujita, S. Hamaguchi, H. Igami, M. Isobe, S. Masuzaki, T. Morisaki, G. Motojima, K. Nagasaki, H. Nakano, Y. Oya, Y. Suzuki, R. Sakamoto, M. Sakamoto, A. Sanpei, H. Takahashi, M. Tokitani, Y. Ueda, Y. Yoshimura, S. Yamamoto, K. Nishimura, H. Sugama, T. Yamamoto, H. Idei, A. Isayama, S. Kitajima, S. Masamune, K. Shinohara, P. S. Bawankar, E. Bernard, M. von Berkel, H. Funaba, X. L. Huang, T. Ii, T. Ido, K. Ikeda, S. Kamio, R. Kumazawa, C. Moon, S. Muto, J. Miyazawa, T. Ming, Y. Nakamura, S. Nishimura, K. Ogawa, T. Ozaki, T. Oishi, M. Ohno, S. Pandya, R. Seki, R. Sano, K. Saito, H. Sakaue, Y. Takemura, K. Tsumori, N. Tamura, H. Tanaka, K. Toi, B. Wieland, I. Yamada, R. Yasuhara, H. Zhang, O. Kaneko, A. Komori, the LHD Experiment Group
Nature Communications 6, 5816 (2015)
10.1038/ncomms6816 -
Development of the Heating Scenarios to Achieve High-Ion Temperature Plasma in the Large Helical Device<sup> </sup>
Yasuhiko TAKEIRI, Osamu KANEKO, Masaki OSAKABE, Kenichi NAGAOKA, Sadayoshi MURAKAMI, Hiromi TAKAHASHI, Haruhisa NAKANO, Katsumi IDA, Shigeru MORITA, Masayuki YOKOYAMA, Mikiro YOSHINUMA, Keisuke FUJII, Motoshi GOTO, Chihiro SUZUKI, Ryosuke SEKI, Katsuyoshi TSUMORI, Katsunori IKEDA, Masashi KISAKI, Takashi MUTOH, Hiroshi YAMADA, Akio KOMORI, the LHD Experiment Group
Plasma and Fusion Research 10, 1402001-1402001 (2015)
10.1585/pfr.10.1402001 -
Extension of operation regimes and investigation of three-dimensional currentless plasmas in the Large Helical Device
O. Kaneko, H. Yamada, S. Inagaki, M. Jakubowski, S. Kajita, S. Kitajima, Kobayashi, K. Koga, T. Morisaki, S. Morita, T. Mutoh, S. Sakakibara, Y. Suzuki, H. Takahashi, K. Tanaka, K. Toi, Y. Yoshimura, T. Akiyama, Y. Asahi, N. Ashikawa, H. Chikaraishi, A. Cooper, D.S. Darrow, E. Drapiko, P. Drewelow, X. Du, A. Ejiri, M. Emoto, T. Evans, N. Ezumi, K. Fujii, T. Fukuda, H. Funaba, M. Furukawa, D.A. Gates, M. Goto, T. Goto, W. Guttenfelder, S. Hamaguchi, M. Hasuo, T. Hino, Y. Hirooka, K. Ichiguchi, K. Ida, H. Idei, T. Ido, H. Igami, K. Ikeda, S. Imagawa, T. Imai, M. Isobe, M. Itagaki, T. Ito, K. Itoh, S. Itoh, A. Iwamoto, K. Kamiya, T. Kariya, H. Kasahara, N. Kasuya, D. Kato, T. Kato, K. Kawahata, F. Koike, S. Kubo, R. Kumazawa, D. Kuwahara, S. Lazerson, H. Lee, S. Masuzaki, S. Matsuoka, H. Matsuura, A. Matsuyama, C. Michael, D. Mikkelsen, O. Mitarai, T. Mito, J. Miyazawa, G. Motojima, K. Mukai, A. Murakami, I. Murakami, S. Murakami, T. Muroga, S. Muto, K. Nagaoka, K. Nagasaki, Y. Nagayama, N. Nakajima, H. Nakamura, Y. Nakamura, H. Nakanishi, H. Nakano, T. Nakano, K. Narihara, Y. Narushima, K. Nishimura, S. Nishimura, M. Nishiura, Y.M. Nunami, T. Obana, K. Ogawa, S. Ohdachi, N. Ohno, N. Ohyabu, T. Oishi, M. Okamoto, A. Okamoto, M. Osakabe, Y. Oya, T. Ozaki, N. Pablant, B.J. Peterson, A. Sagara, K. Saito, R. Sakamoto, H. Sakaue, M. Sasao, K. Sato, M. Sato, K. Sawada, R. Seki, T. Seki, V. Sergeev, S. Sharapov, I. Sharov, A. Shimizu, T. Shimozuma, M. Shiratani, M. Shoji, S. Sudo, H. Sugama, C. Suzuki, K. Takahata, Y. Takeiri, Y. Takemura, M. Takeuchi, H. Tamura, N. Tamura, H. Tanaka, T. Tanaka, M. Tingfeng, Y. Todo, M. Tokitani, K. Tokunaga, T. Tokuzawa, H. Tsuchiya, K. Tsumori, Y. Ueda, L. Vyacheslavov, K.Y. Watanabe, T. Watanabe, T.H. Watanabe, B. Wieland, I. Yamada, S. Yamada, S. Yamamoto, N. Yanagi, R. Yasuhara, M. Yokoyama, N. Yoshida, S. Yoshimura, T. Yoshinaga, M. Yoshinuma, A. Komori
Nuclear Fusion 53, 104015 (2013)
10.1088/0029-5515/53/10/104015 -
Effective screening of iron impurities in the ergodic layer of the Large Helical Device with a metallic first wall
S. Morita, C.F. Dong, M. Kobayashi, M. Goto, X.L. Huang, I. Murakami, T. Oishi, E.H. Wang, N. Ashikawa, K. Fujii, M. Hasuo, H. Kasahara, D. Kato, F. Koike, S. Masuzaki, H.A. Sakaue, T. Shikama, N. Yamaguchi, the LHD Experiment Group
Nuclear Fusion 53, 093017 (2013)
10.1088/0029-5515/53/9/093017 -
Development of a compact thermal lithium atom beam source for measurements of electron velocity distribution function anisotropy in electron cyclotron resonance plasmas
T. Nishioka, T. Shikama, S. Nagamizo, K. Fujii, H. Zushi, M. Uchida, A. Iwamae, H. Tanaka, T. Maekawa, M. Hasuo
Review of Scientific Instruments 84, 073509 (2013)
10.1063/1.4815721 -
Evaluation of particle source rate and its influence on particle transport in fusion plasma
M Goto, K Sawada, K Fujii, M Hasuo, S Morita
Journal of Physics: Conference Series 397, 012023 (2012)
10.1088/1742-6596/397/1/012023 -
Wideband High-Resolution Spectroscopy on Al-pellet Ablation Plasmas in Large Helical Device
M Hasuo, K Fujii, T Shikama, S Morita, M Goto, H Tanaka
Journal of Physics: Conference Series 397, 012016 (2012)
10.1088/1742-6596/397/1/012016 -
A simultaneous measurement of polarization-resolved spectra of neutral helium 23P–33D, 21P–31D and 23P–33S emissions from the periphery of a Large Helical Device plasma
K Mizushiri, K Fujii, T Shikama, A Iwamae, M Goto, S Morita, M Hasuo
Plasma Physics and Controlled Fusion 53, 105012 (2011)
10.1088/0741-3335/53/10/105012 -
Plasma polarization spectroscopy of atomic and molecular emissions from magnetically confined plasmas1This review is part of a Special Issue on the 10th International Colloquium on Atomic Spectra and Oscillator Strengths for Astrophysical and Laboratory Plasmas.
T. Shikama, K. Fujii, S. Kado, H. Zushi, M. Sakamoto, A. Iwamae, M. Goto, S. Morita, M. Hasuo
Canadian Journal of Physics 89, 495-501 (2011)
10.1139/p10-118 -
Evaluation of hydrogen atom density in the plasma core region based on the Balmer-𝛂 line profile
M. Goto, K. Sawada, K. Fujii, M. Hasuo, S. Morita
Nuclear Fusion 51, 023005 (2011)
10.1088/0029-5515/51/2/023005 -
Calculation of a magnetic field effect on emission spectra of light diatomic molecules for diagnostic application to fusion edge plasmas
T Shikama, K Fujii, K Mizushiri, M Hasuo, S Kado, H Zushi
Plasma Physics and Controlled Fusion 51, 122001 (2009)
10.1088/0741-3335/51/12/122001 -
Edge and Core Impurity Transport Study with Spectroscopic Instruments in LHD
Shigeru Morita, Motoshi Goto, Masahiro Kobayashi, Sadatsugu Muto, Malay Bikas Chowdhuri, Dong Chunfeng, Zhou Hangyu, Cui Zhengying, Keisuke Fujii, Akihiro Furuzawa, Masahiro Hasuo, Atsushi Iwamae, Jie Yinxian, Mohammed Koubiti, Ikuya Sakurai, Yuzuru Tawara, Wan Baonian, Wu Zhenwei, Naohiro Yamaguchi
Plasma Science and Technology 11, 402-408 (2009)
10.1088/1009-0630/11/4/07 -
Gene transfer device utilizing micron-spiked electrodes produced by the self-organization phenomenon of Fe-alloy
Naoki Miyano, Yuuki Inoue, Yuji Teramura, Keisuke Fujii, Fujio Tsumori, Hiroo Iwata, Hidetoshi Kotera
Lab on a Chip 8, 1104 (2008)
10.1039/b718655j