Research Output

2018

Experimental research plan of nonlinearity of tokamak edge turbulence in plasma turbulence observatory

Nagashima, Y. & Fujisawa, A., Aug 1 2018, Front-runners' Symposium on Plasma Physics in Honor of Professors Kimitaka Itoh and Sanae-I. Itoh. Todo, Y. & Ida, K. (eds.). American Institute of Physics Inc., 020006. (AIP Conference Proceedings; vol. 1993).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Extraction of nonlinear waveform in turbulent plasma

Kin, F., Itoh, K., Fujisawa, A., Kosuga, Y., Sasaki, M., Yamada, T., Inagaki, S., Itoh, S. I., Kobayashi, T., Nagashima, Y., Kasuya, N., Arakawa, H., Yamasaki, K. & Hasamada, K., Jun 1 2018, In : Physics of Plasmas. 25, 6, 062304.

Research output: Contribution to journalArticle

5 Citations (Scopus)

Fatigue pre-cracking and fracture toughness in polycrystalline tungsten and molybdenum

Taguchi, K., Nakadate, K., Matsuo, S., Tokunaga, K. & Kurishita, H., Jan 1 2018, In : Journal of Nuclear Materials. 498, p. 445-457 13 p.

Research output: Contribution to journalArticle

Global mode analysis of ion-temperature-gradient instabilities using the gyro-fluid model in linear devices

Ohno, T., Kasuya, N., Sasaki, M. & Yagi, M., Jan 1 2018, In : Plasma and Fusion Research. 13, 1401081.

Research output: Contribution to journalArticle

Open Access

Heat loading behavior and thermomechanical analyses on plasma spray tungsten coated reduced-activation ferritic/martensitic steel

Tokunaga, K., Hotta, T., Araki, K., Kurumada, A., Tokitani, M., Masuzaki, S., Ezato, K., Suzuki, S., Enoeda, M., Akiba, M., Hasegawa, M. & Nakamura, K., Nov 2018, In : Fusion Engineering and Design. 136, p. 1624-1628 5 p.

Research output: Contribution to journalArticle

1 Citation (Scopus)

Helical flow structures in torus plasmas

Kosuga, Y., Aug 1 2018, Front-runners' Symposium on Plasma Physics in Honor of Professors Kimitaka Itoh and Sanae-I. Itoh. Todo, Y. & Ida, K. (eds.). American Institute of Physics Inc., 020009. (AIP Conference Proceedings; vol. 1993).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Helium irradiation behavior of tungsten-niobium alloys under different ion energies

Xu, M. Y., Luo, L. M., Zhou, Y. F., Zan, X., Xu, Y., Xu, Q., Tokunaga, K., Zhu, X. Y. & Wu, Y. C., Jul 2018, In : Fusion Engineering and Design. 132, p. 7-12 6 p.

Research output: Contribution to journalArticle

2 Citations (Scopus)

Initial results from solenoid-free plasma start-up using Transient CHI on QUEST

Kuroda, K., Raman, R., Hanada, K., Hasegawa, M., Onchi, T., Ono, M., Nelson, B. A., Jarboe, T. R., Nagata, M., Mitarai, O., Nakamura, K., Idei, H., Rogers, J., Kawasaki, S., Nagata, T., Kuzmin, A., Kojima, S., Huang, C., Watanabe, O., Higashijima, A. & 3 others, Takase, Y., Fukuyama, A. & Murakami, S., Sep 14 2018, In : Plasma Physics and Controlled Fusion. 60, 11, 115001.

Research output: Contribution to journalArticle

3 Citations (Scopus)

Microstructure and peeling behavior of MOCVD processed oxide insulator coating before and after ion beam irradiation

Hishinuma, Y., Tanaka, M., Tanaka, T., Matsuda, K., Watanabe, H. & Muroga, T., Aug 2018, In : Nuclear Materials and Energy. 16, p. 123-127 5 p.

Research output: Contribution to journalArticle

Microstructure and transient laser thermal shock behavior of W–TiC–Y2O3 composites prepared by wet chemical method

Xu, MY. Y., Luo, LM. M., Lin, JS. S., Xu, Y., Zan, X., Xu, Q., Tokunaga, K., Zhu, XY. Y. & Wu, YC. C., Oct 25 2018, In : Journal of Alloys and Compounds. 766, p. 784-790 7 p.

Research output: Contribution to journalArticle

2 Citations (Scopus)

Microwave frequency comb Doppler reflectometer applying fast digital data acquisition system in LHD

Tokuzawa, T., Tsuchiya, H., Tsujimura, T., Emoto, M., Nakanishi, H., Inagaki, S., Ida, K., Yamada, H., Ejiri, A., Watanabe, K. Y., Oguri, K., Akiyama, T., Tanaka, K. & Yamada, I., Oct 1 2018, In : Review of Scientific Instruments. 89, 10, 10H118.

Research output: Contribution to journalArticle

2 Citations (Scopus)

Modification of plasma control system and hot-wall temperature control system for long-duration plasma sustainment in QUEST

Hasegawa, M., Nakamura, K., Hanada, K., Kawasaki, S., Kuzmin, A., Idei, H., Tokunaga, K., Nagashima, Y., Onchi, T., Kuroda, K., Watanabe, O., Higashijima, A. & Nagata, T., Apr 2018, In : Fusion Engineering and Design. 129, p. 202-206 5 p.

Research output: Contribution to journalArticle

2 Citations (Scopus)

Nonlinear characteristics of mediator and streamer in linear magnetized plasmas

Kin, F., Fujisawa, A., Itoh, K., Kosuga, Y., Sasaki, M., Yamada, T., Inagaki, S., Itoh, S. I., Kobayashi, T., Nagashima, Y., Kasuya, N., Arakawa, H., Yamasaki, K. & Hasamada, K., Jan 1 2018, 45th EPS Conference on Plasma Physics, EPS 2018. Berndt, J., Coda, S., Lapenta, G., Michaut, C., Weber, S. & Mantsinen, M. (eds.). European Physical Society (EPS), p. 565-568 4 p. (45th EPS Conference on Plasma Physics, EPS 2018; vol. 2018-July).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Numerical diagnostics of fluctuation spectrum in 3D magnetic configurations

Kasuya, N., Nunami, M., Tanaka, K. & Yagi, M., Aug 30 2018, In : Nuclear Fusion. 58, 10, 106033.

Research output: Contribution to journalArticle

1 Citation (Scopus)
1 Citation (Scopus)

Past and present experiments toward PLATO project

Fujisawa, A., Aug 1 2018, Front-runners' Symposium on Plasma Physics in Honor of Professors Kimitaka Itoh and Sanae-I. Itoh. Todo, Y. & Ida, K. (eds.). American Institute of Physics Inc., 020011. (AIP Conference Proceedings; vol. 1993).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)
3 Citations (Scopus)

Propagation direction of geodesic acoustic modes driven by drift wave turbulence

Sasaki, M., Itoh, K., Kobayashi, T., Kasuya, N., Fujisawa, A. & Itoh, S. I., Oct 3 2018, In : Nuclear Fusion. 58, 11, 112005.

Research output: Contribution to journalArticle

2 Citations (Scopus)

Quantification of Turbulent Driving Forces for the Geodesic Acoustic Mode in the JFT-2M Tokamak

Kobayashi, T., Sasaki, M., Ido, T., Kamiya, K., Miura, Y., Nagashima, Y., Ida, K., Inagaki, S., Fujisawa, A., Itoh, S. I. & Itoh, K., Jan 26 2018, In : Physical Review Letters. 120, 4, 045002.

Research output: Contribution to journalArticle

8 Citations (Scopus)

Role of density modulation in driving nonlinear streamer flows in drift wave turbulence

Kosuga, Y. & Hasamada, K., Oct 1 2018, In : Physics of Plasmas. 25, 10, 100701.

Research output: Contribution to journalArticle

5 Citations (Scopus)

Simulation research on competitive nature of plasma turbulence in linear devices

Kasuya, N. & Sasaki, M., Aug 1 2018, Front-runners' Symposium on Plasma Physics in Honor of Professors Kimitaka Itoh and Sanae-I. Itoh. Todo, Y. & Ida, K. (eds.). American Institute of Physics Inc., 020008. (AIP Conference Proceedings; vol. 1993).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Spatio-temporal dynamics of turbulence coupling with zonal flows

Sasaki, M., Kobayashi, T., Itoh, K., Kasuya, N., Kosuga, Y., Fujisawa, A., Inagaki, S. & Itoh, S. I., Jan 1 2018, 45th EPS Conference on Plasma Physics, EPS 2018. Berndt, J., Coda, S., Lapenta, G., Michaut, C., Weber, S. & Mantsinen, M. (eds.). European Physical Society (EPS), p. 449-452 4 p. (45th EPS Conference on Plasma Physics, EPS 2018; vol. 2018-July).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Spatio-temporal dynamics of turbulence trapped in geodesic acoustic modes

Sasaki, M., Kobayashi, T., Itoh, K., Kasuya, N., Kosuga, Y., Fujisawa, A. & Itoh, S. I., Jan 1 2018, In : Physics of Plasmas. 25, 1, 012316.

Research output: Contribution to journalArticle

9 Citations (Scopus)

Spectroscopic measurements of impurity ion toroidal and poloidal flow velocities and their dependence on vertical magnetic field in QUEST toroidal ECR plasmas

Yoneda, N., Shikama, T., Zushi, H., Hanada, K., Fujikawa, A., Onchi, T., Kuroda, K., Nii, K., Hasuo, M., Hasegawa, M., Idei, H., Nakamura, K., Nagashima, Y., Higashijima, A. & Nagata, T., Jan 1 2018, In : Plasma and Fusion Research. 13, 3402087.

Research output: Contribution to journalArticle

Open Access
1 Citation (Scopus)

Subcritical instabilities in neutral fluids and plasmas

Lesur, M., Médina, J., Sasaki, M. & Shimizu, A., Dec 2018, In : Fluids. 3, 4, 89.

Research output: Contribution to journalArticle

Open Access

Surface morphology of Tungsten-F82H after high-heat flux testing using plasma-arc lamps

Ibano, K., Sabau, A. S., Tokunaga, K., Akiyoshi, M., Kiggans, J. O., Schaich, C. R., Katoh, Y. & Ueda, Y., Aug 2018, In : Nuclear Materials and Energy. 16, p. 128-132 5 p.

Research output: Contribution to journalArticle

1 Citation (Scopus)

Symmetry-breaking of turbulence structure and position identification in toroidal plasmas

Itoh, K., Itoh, S. I., Nagashima, Y., Yamada, T., Kosuga, Y. & Fujisawa, A., Jan 1 2018, In : Plasma and Fusion Research. 13, 1102113.

Research output: Contribution to journalArticle

Open Access

Thermal shock behavior of W–ZrC/Sc2O3 composites under two different transient events by electron and laser irradiation

Chen, H. Y., Luo, L. M., Zan, X., Xu, Q., Tokunaga, K., Liu, J. Q., Zhu, X. Y., Cheng, J. G. & Wu, Y. C., Feb 1 2018, In : Journal of Nuclear Materials. 499, p. 248-255 8 p.

Research output: Contribution to journalArticle

1 Citation (Scopus)

Three-dimensional structure of the streamer in linear plasmas

Yamada, T., Inagaki, S., Sasaki, M., Nagashima, Y., Kin, F., Arakawa, H., Kobayashi, T., Yamasaki, K., Kasuya, N., Kosuga, Y., Fujisawa, A., Itoh, K. & Itoh, S. I., Jan 1 2018, In : journal of the physical society of japan. 87, 3, 034501.

Research output: Contribution to journalArticle

1 Citation (Scopus)

Transient thermal shock behavior of W–Zr/Sc2O3 composites prepared via spark plasma sintering

Chen, H. Y., Luo, L. M., Zan, X., Xu, Q., Tokunaga, K., Liu, J. Q., Liu, D. G., Zhu, X. Y., Cheng, J. G. & Wu, Y. C., Jan 1 2018, In : Fusion Engineering and Design. 126, p. 44-50 7 p.

Research output: Contribution to journalArticle

1 Citation (Scopus)

Trapping of turbulence clumps by geodesic acoustic modes

Sasaki, M., Aug 1 2018, Front-runners' Symposium on Plasma Physics in Honor of Professors Kimitaka Itoh and Sanae-I. Itoh. Todo, Y. & Ida, K. (eds.). American Institute of Physics Inc., 020007. (AIP Conference Proceedings; vol. 1993).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Turbulence simulation taking account of inhomogeneity of neutral density in linear devices

Kasuya, N., Abe, S., Sasaki, M., Inagaki, S., Kobayashi, T. & Yagi, M., Jan 1 2018, In : Physics of Plasmas. 25, 1, 012314.

Research output: Contribution to journalArticle

3 Citations (Scopus)
2017

2D turbulence structure observed by a fast framing camera system in linear magnetized device PANTA

Ohdachi, S., Inagaki, S., Kobayashi, T. & Goto, M., Apr 19 2017, In : Journal of Physics: Conference Series. 823, 1, 012009.

Research output: Contribution to journalConference article

Ablation-erosion analyses of various fusion material surfaces and developments of surface erosion monitors for notification of fusion chamber maintenance times, as an example: Visible light transparent SiC and up-conversion phosphors applied to plasma facing surface structures, useful for versatile purposes to protect and diagnose fusion chambers and so on

Kasuya, K., Motokoshi, S., Taniguchi, S., Nakai, M., Tokunaga, K., Kolacek, K., Schmidt, J., Frolov, O., Straus, J., Matejicek, J. & Choukourov, A., Jan 1 2017, XXI International Symposium on High Power Laser Systems and Applications 2016. Brunnbauer, J., Schuocker, D. & Majer, R. (eds.). SPIE, 102541B. (Proceedings of SPIE - The International Society for Optical Engineering; vol. 10254).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Analysis of higher harmonics on bidirectional heat pulse propagation experiment in helical and tokamak plasmas

Kobayashi, T., Ida, K., Inagaki, S., Tsuchiya, H., Tamura, N., Choe, G. H., Yun, G. S., Park, H. K., Ko, W. H., Evans, T. E., Austin, M. E., Shafer, M. W., Ono, M., López-bruna, D., Ochando, M. A., Estrada, T., Hidalgo, C., Moon, C., Igami, H., Yoshimura, Y. & 3 others, Tsujimura, T. I., Itoh, S. I. & Itoh, K., May 17 2017, In : Nuclear Fusion. 57, 7, 076013.

Research output: Contribution to journalArticle

5 Citations (Scopus)
6 Citations (Scopus)

A simple model for electron dissipation in trapped ion turbulence

Lesur, M., Cartier-Michaud, T., Drouot, T., Diamond, P. H., Kosuga, Y., Réveillé, T., Gravier, E., Garbet, X., Itoh, S. I. & Itoh, K., Jan 1 2017, In : Physics of Plasmas. 24, 1, 012511.

Research output: Contribution to journalArticle

6 Citations (Scopus)

Coexistence of driftwaves and d'angelo modes at different position and frequency in linear plasma device

Dupertuis, N., Inagaki, S., Nagashima, Y., Kosuga, Y., Kin, F., Kobayashi, T., Kasuya, N., Sasaki, M., Fujisawa, A., Tran, M. Q., Itoh, S. I. & Itoh, K., Jan 1 2017, In : Plasma and Fusion Research. 12, 1201008.

Research output: Contribution to journalArticle

2 Citations (Scopus)

Correlation between magnetic hysteresis Properties and Vickers hardness in cladded reactor pressure vessel steel

Aihara, Y., Kamada, Y., Murakami, T., Kobayashi, S. & Watanabe, H., Jan 1 2017, In : Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals. 81, 10, p. 475-479 5 p.

Research output: Contribution to journalArticle

1 Citation (Scopus)

Current start-up using the new CHI system

Kuroda, K., Raman, R., Hanada, K., Hasegawa, M., Onchi, T., Ono, M., Jaboe, T., Nelson, B. A., Nagata, M., Mitarai, O., Nakamura, K., Idei, H., Rogers, J., Kawasaki, S., Nagata, T., Kuzmin, A., Kojima, S., Watanabe, O., Higashijima, A., Takase, Y. & 1 others, Fukuyama, A., Jan 1 2017, In : Plasma and Fusion Research. 12, 1202020.

Research output: Contribution to journalArticle

8 Citations (Scopus)

Distorted magnetic island formation during slowing down to mode locking in helical plasmas

The LHD Experiment Group, May 12 2017, In : Nuclear Fusion. 57, 7, 076003.

Research output: Contribution to journalArticle

2 Citations (Scopus)

Effect of helium irradiation on deuterium permeation behavior in tungsten

Uemura, Y., Sakurada, S., Fujita, H., Azuma, K., Zhou, Q., Chikada, T., Oya, Y., Hatano, Y., Yoshida, N., Watanabe, H., Oyaizu, M., Isobe, K., Shimada, M., Buchenauer, D. & Kolasinski, R., Jul 1 2017, In : Journal of Nuclear Materials. 490, p. 242-246 5 p.

Research output: Contribution to journalArticle

10 Citations (Scopus)

Effect of magnetic structure on RF-induced breakdown in QUEST

Yoneda, R., Hanada, K., Nakamura, K., Idei, H., Yoshida, N., Hasegawa, M., Onchi, T., Kuroda, K., Kawasaki, S., Higashijima, A., Nagata, T., Isayama, A., Mitarai, O., Fukuyama, A. & Takase, Y., Jun 1 2017, In : Physics of Plasmas. 24, 6, 062513.

Research output: Contribution to journalArticle

4 Citations (Scopus)

Effects of hydrogen isotope in coupling between confinement, wall material and SoL turbulence

Itoh, K., Itoh, S. I., Sasaki, M. & Kosuga, Y., Mar 31 2017, In : Nuclear Fusion. 57, 5, 056031.

Research output: Contribution to journalArticle

6 Citations (Scopus)

Effects of ion irradiation on H2O and CO2 absorption and desorption characteristics of Li2ZrO3 and Pt-coated Li2ZrO3

Tsuchiya, B., Nagata, S., Sugiyama, T. & Tokunaga, K., Sep 14 2017, In : International Journal of Hydrogen Energy. 42, 37, p. 23746-23750 5 p.

Research output: Contribution to journalArticle

4 Citations (Scopus)

Effects of irradiation environment on V-4Cr-4Ti alloys

Watanabe, H., Muroga, T. & Nagasaka, T., Jan 1 2017, In : Plasma and Fusion Research. 12, Specialissue, 2405011.

Research output: Contribution to journalArticle

Enhancement and suppression of turbulence by energetic-particle-driven geodesic acoustic modes

Sasaki, M., Itoh, K., Hallatschek, K., Kasuya, N., Lesur, M., Kosuga, Y. & Itoh, S. I., Dec 1 2017, In : Scientific reports. 7, 1, 16767.

Research output: Contribution to journalArticle

12 Citations (Scopus)

Erratum: Current Start-Up Using the New CHI System [Plasma Fusion Res., 12, (2017) (1202020)] DOI: 10.1585/pfr.12.1202020

Kuroda, K., Raman, R., Hanada, K., Hasegawa, M., Onchi, T., Ono, M., Jarboe, T. R., Nelson, B. A., Nagata, M., Mitarai, O., Nakamura, K., Idei, H., Rogers, J., Kawasaki, S., Nagata, T., Kuzmin, A., Kojima, S., Watanabe, O., Higashijima, A., Takase, Y. & 1 others, Fukuyama, A., Jan 1 2017, In : Plasma and Fusion Research. 12, 1902026.

Research output: Contribution to journalComment/debate

Open Access

Extension of the operational regime of the LHD towards a deuterium experiment

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., Kubo, S., Masamune, S., Mito, T., Murakami, I., Nagaoka, K. & 167 others, Nagasaki, K., Nishimura, K., Sakamoto, M., Sakamoto, R., Shimozuma, T., Shinohara, K., Sugama, H., Watanabe, K. Y., Ahn, J. W., Akata, N., Akiyama, T., Ashikawa, N., Baldzuhn, J., Bando, T., Bernard, E., Castejón, F., Chikaraishi, H., Emoto, M., Evans, T., Ezumi, N., Fujii, K., Funaba, H., Goto, M., Goto, T., Gradic, D., Gunsu, Y., Hamaguchi, S., Hasegawa, H., Hayashi, Y., Hidalgo, C., Higashiguchi, T., Hirooka, Y., Hishinuma, Y., Horiuchi, R., Ichiguchi, K., Ida, K., Ido, T., Igami, H., Ikeda, K., Ishiguro, S., Ishizaki, R., Ishizawa, A., Ito, A., Ito, Y., Iwamoto, A., Kamio, S., Kamiya, K., Kaneko, O., Kanno, R., Kasahara, H., Kato, D., Kato, T., Kawahata, K., Kawamura, G., Kisaki, M., Kitajima, S., Ko, W. H., Kobayashi, M., Kobayashi, S., Kobayashi, T., Koga, K., Kohyama, A., Kumazawa, R., Lee, J. H., López-Bruna, D., Makino, R., Masuzaki, S., Matsumoto, Y., Matsuura, H., Mitarai, O., Miura, H., Miyazawa, J., Mizuguchi, N., Moon, C., Morita, S., Moritaka, T., Mukai, K., Muroga, T., Muto, S., Mutoh, T., Nagasaka, T., Nagayama, Y., Nakajima, N., Nakamura, Y., Nakanishi, H., Nakano, H., Nakata, M., Narushima, Y., Nishijima, D., Nishimura, A., Nishimura, S., Nishitani, T., Nishiura, M., Nobuta, Y., Noto, H., Nunami, M., Obana, T., Ogawa, K., Ohdachi, S., Ohno, M., Ohno, N., Ohtani, H., Okamoto, M., Oya, Y., Ozaki, T., Peterson, B. J., Preynas, M., Sagara, S., Saito, K., Sakaue, H., Sanpei, A., Satake, S., Sato, M., Saze, T., Schmitz, O., Seki, R., Seki, T., Sharov, I., Shimizu, A., Shiratani, M., Shoji, M., Skinner, C., Soga, R., Stange, T., Suzuki, C., Suzuki, Y., Takada, S., Takahata, K., Takayama, A., Takayama, S., Takemura, Y., Takeuchi, Y., Tamura, H., Tamura, N., Tanaka, H., Tanaka, K., Tanaka, M., Tanaka, T., Tanaka, Y., Toda, S., Todo, Y., Toi, K., Toida, M., Tokitani, M., Tokuzawa, T., Tsuchiya, H., Tsujimura, T., Tsumori, K., Usami, S., Velasco, J. L., Wang, H., Watanabe, T. H., Watanabe, T., Yagi, J., Yajima, M., Yamada, H., Yamada, I., Yamagishi, O., Yamaguchi, N., Yamamoto, Y., Yanagi, N., Yasuhara, R., Yatsuka, E., Yoshida, N., Yoshinuma, M., Yoshimura, S. & Yoshimura, Y., Aug 21 2017, In : Nuclear Fusion. 57, 10, 102023.

Research output: Contribution to journalArticle

36 Citations (Scopus)

Fast algorithm for tomographic reconstruction for plasma emission

Yamasaki, K., Fujisawa, A., Nagashima, Y. & Inagaki, S., Jan 1 2017, In : Plasma and Fusion Research. 12, 1201045.

Research output: Contribution to journalArticle

2 Citations (Scopus)