Research Output

2001

Observation of bifurcation properties of radial electric fields using a heavy ion beam probe

Fujisawa, A., Iguchi, H., Minami, T., Yoshimura, Y., Sanuki, H., Itoh, K., Isobe, M., Nishimura, S., Suzuki, C., Tanaka, K., Osakabe, M., Nomura, I., Ida, K., Okamura, S., Toi, K., Kado, S., Akiyama, R., Shimizu, A., Takahashi, C., Kojima, M. & 4 others, Itoh, S. I., Matsuoka, K., Hamada, Y. & Fujiwara, M., May 1 2001, In : Nuclear Fusion. 41, 5, p. 575-584 10 p.

Research output: Contribution to journalArticle

11 Citations (Scopus)

Observation of the “self-healing” of an error field island in the large helical device

Narihara, K., Watanabe, K. Y., Yamada, I., Morisaki, T., Tanaka, K., Sakakibara, S., Ida, K., Sakamoto, R., Ohyabu, N., Ashikawa, N., Emoto, M., Funaba, H., Goto, M., Hayashi, H., Idei, H., Ikeda, K., Inagaki, S., Inoue, N., Kaneko, O., Kawahata, K. & 48 others, Kobuchi, T., Komori, A., Kubo, S., Kumazawa, R., Masuzaki, S., Miyazawa, J., Morita, S., Motojima, O., Murakami, S., Muto, S., Mutoh, T., Nagayama, Y., Nakamura, Y., Nakanishi, H., Nishimura, K., Noda, N., Notake, T., Ohdachi, S., Oka, Y., Ohkubo, K., Osakabe, M., Ozaki, S., Peterson, B. J., Sagara, A., Saito, K., Sasao, H., Sasao, M., Sato, K., Sato, M., Seki, T., Shimozuma, T., Shoji, C., Sudo, S., Suzuki, H., Takayama, A., Takechi, M., Takeiri, Y., Tamura, N., Toi, K., Tokuzawa, N., Torii, Y., Tsumori, K., Watari, T., Yamada, H., Yamaguchi, S., Yamamoto, S., Yamazaki, K. & Yoshimura, Y., Jan 1 2001, In : Physical review letters. 87, 13

Research output: Contribution to journalArticle

62 Citations (Scopus)

Observation of toroidal flow antiparallel to the 〈Er × Bθ〉 drift direction in the hot electron mode plasmas in the compact helical system

Ida, K., Minami, T., Yoshimura, Y., Fujisawa, A., Suzuki, C., Okamura, S., Nishimura, S., Isobe, M., Iguchi, H., Itoh, K., Kado, S., Liang, Y., Nomura, I., Osakabe, M., Takahashi, C., Tanaka, K. & Matsuoka, K., Apr 2 2001, In : Physical review letters. 86, 14, p. 3040-3043 4 p.

Research output: Contribution to journalArticle

37 Citations (Scopus)

Plasma-surface interaction effects during high ion temperature long pulse experiments in TRIAM-1M

Yoshida, N., Hirai, T., Tokunaga, K. & Itoh, S., Jan 1 2001, In : Journal of Nuclear Materials. 290-293, p. 1030-1035 6 p.

Research output: Contribution to journalArticle

4 Citations (Scopus)

Reduction of ion thermal diffusivity associated with the transition of the radial electric field in neutral-beam-heated plasmas in the large helical device

Ida, K., Funaba, H., Kado, S., Narihara, K., Tanaka, K., Takeiri, Y., Nakamura, Y., Ohyabu, N., Yamazaki, K., Yokoyama, M., Murakami, S., Ashikawa, N., DeVries, P. C., Emoto, M., Goto, M., Idei, H., Ikeda, K., Inagaki, S., Inoue, N., Isobe, M. & 58 others, Itoh, K., Kaneko, O., Kawahata, K., Khlopenkov, K., Komori, A., Kubo, S., Kumazawa, R., Liang, Y., Masuzaki, S., Minami, T., Miyazawa, J., Morisaki, T., Morita, S., Mutoh, T., Muto, S., Nagayama, Y., Nakanish, H., Nishimura, K., Noda, N., Notake, T., Kobuchi, T., Ohdachi, S., Ohkubo, K., Oka, Y., Osakabe, M., Ozaki, T., Pavlichenko, R. O., Peterson, B. J., Sagara, A., Saito, K., Sakakibara, S., Sakamoto, R., Sanuki, H., Sasao, H., Sasao, M., Sato, K., Sato, M., Seki, T., Shimozuma, T., Shoji, M., Suzuki, H., Sudo, S., Tamura, N., Toi, K., Tokuzawa, T., Torii, Y., Tsumori, K., Yamamoto, T., Yamada, H., Yamada, I., Yamaguchi, S., Yamamoto, S., Yoshimura, Y., Watanabe, K. Y., Watari, T., Hamada, Y., Motojima, O. & Fujiwara, M., Jun 4 2001, In : Physical review letters. 86, 23, p. 5297-5300 4 p.

Research output: Contribution to journalArticle

47 Citations (Scopus)

Statistical theory and transition in multiple-scale-length turbulence in plasmas

Itoh, S. I. & Itoh, K., Aug 1 2001, In : Plasma Physics and Controlled Fusion. 43, 8, p. 1055-1102 48 p.

Research output: Contribution to journalArticle

78 Citations (Scopus)

Steady state experiments on current profile control and long sustainment of high performance LHCD plasmas on the superconducting tokamak TRIAM-1M

Zushi, H., Itoh, S., Nakamura, K., Sakamoto, M., Hanada, K., Jotaki, E., Pan, Y. D., Hasegawa, M., Kawasaki, S. & Nakashima, H., Oct 1 2001, In : Nuclear Fusion. 41, 10, p. 1483-1493 11 p.

Research output: Contribution to journalArticle

10 Citations (Scopus)

Tearing mode instability due to anomalous resistivity

Furuya, A., Itoh, S. & Yagi, M., Feb 1 2001, In : journal of the physical society of japan. 70, 2, p. 407-414 8 p.

Research output: Contribution to journalArticle

16 Citations (Scopus)

The 14-channel grating polychromator for ECE measurements in LHD

Kawahata, K., DeVries, P. C., Nagayama, Y., Inagaki, S., Tokuzawa, T., Tanaka, K. & Sasao, H., Jan 1 2001, In : Review of Scientific Instruments. 72, 1 II, p. 387-390 4 p.

Research output: Contribution to journalArticle

6 Citations (Scopus)

Transition of Radial Electric Field in Helical Systems

Itoh, K., Sanuki, H., Toda, S., Yokoyama, M., Itoh, S., Yagi, M. & Fukuyama, A., Jun 1 2001, In : Journal of the Physical Society of Japan. 70, 6, p. 1575-1584 10 p.

Research output: Contribution to journalArticle

3 Citations (Scopus)

Turbulence theories and modelling of fluids and plasmas

Yoshizawa, A., Itoh, S. I., Itoh, K. & Yokoi, N., Mar 1 2001, In : Plasma Physics and Controlled Fusion. 43, 3, p. R1-R144

Research output: Contribution to journalReview article

65 Citations (Scopus)

Variational approach to a turbulent swirling pipe flow with the aid of helicity

Yoshizawa, A., Yokoi, N., Nisizima, S., Itoh, S. I. & Itoh, K., Aug 2001, In : Physics of Fluids. 13, 8, p. 2309-2319 11 p.

Research output: Contribution to journalArticle

13 Citations (Scopus)

Varying temperature irradiation experiment in HFIR

Muroga, T., Zinkle, S. J., Qualls, A. L. & Watanabe, H., Nov 1 2001, In : Journal of Nuclear Materials. 299, 2, p. 148-156 9 p.

Research output: Contribution to journalArticle

14 Citations (Scopus)

Wall conditioning using 2.45 GHz ECR-DC on superconducting tokamak TRIAM-1M

Hanada, K., Jotaki, E., Sakamoto, M., Nakamura, K. & Itoh, S., Jan 1 2001, In : Fusion Engineering and Design. 54, 1, p. 79-86 8 p.

Research output: Contribution to journalArticle

7 Citations (Scopus)
2002

Analysis of current diffusive ballooning mode including kinetic effects

Uchida, M., Fukuyama, A., Itoh, K., Itoh, S. I. & Yagi, M., Dec 1 2002, In : Plasma Physics and Controlled Fusion. 44, 12, p. 2495-2511 17 p.

Research output: Contribution to journalArticle

5 Citations (Scopus)

Bifurcation and phase diagram of turbulence constituted from three different scale-length modes

Itoh, S. I., Kitazawa, A., Yagi, M. & Itoh, K., Jul 1 2002, In : Plasma Physics and Controlled Fusion. 44, 7, p. 1311-1328 18 p.

Research output: Contribution to journalArticle

8 Citations (Scopus)

Compatibility between high energy particle confinement and magnetohydrodynamic stability in the inward-shifted plasmas of the Large Helical Device

Kaneko, O., Komori, A., Yamada, H., Ohyabu, N., Kawahata, K., Nakamura, Y., Ida, K., Murakami, S., Mutoh, T., Sakakibara, S., Masuzaki, S., Ashikawa, N., Emoto, M., Funaba, H., Goto, M., Idei, H., Ikeda, K., Inagaki, S., Inoue, N., Isobe, M. & 58 others, Khlopenkov, K., Kubo, S., Kumazawa, R., Minami, T., Miyazawa, J., Morisaki, T., Morita, S., Muto, S., Nagayama, Y., Nakajima, N., Nakanishi, H., Narihara, K., Nishimura, K., Noda, N., Notake, T., Kobuchi, T., Liang, Y., Ohdachi, S., Oka, Y., Osakabe, M., Ozaki, T., Peterson, B. J., Sagara, A., Saito, K., Sakamoto, R., Sasao, M., Sato, K., Sato, M., Seki, T., Shimozuma, T., Shoji, M., Suzuki, H., Takechi, M., Takeiri, Y., Tamura, N., Tanaka, K., Toi, K., Tokuzawa, T., Torii, Y., Tsumori, K., Yamada, I., Yamamoto, S., Yokoyama, M., Yoshimura, Y., Yoshinuma, M., Watanabe, K. Y., Watari, T., Xu, Y., Itoh, K., Matsuoka, K., Ohkubo, K., Ohtake, I., Satow, T., Sudo, S., Yamazaki, K., Hamada, Y., Motojima, O. & Fujiwara, M., May 1 2002, In : Physics of Plasmas. 9, 5, p. 2020-2026 7 p.

Research output: Contribution to journalArticle

15 Citations (Scopus)

Computer simulation of fundamental behaviors of point defects, clusters and interaction with dislocations in Fe and Ni

Kuramoto, E., Ohsawa, K. & Tsutsumi, T., Dec 1 2002, In : CMES - Computer Modeling in Engineering and Sciences. 3, 2, p. 193-200 8 p.

Research output: Contribution to journalArticle

7 Citations (Scopus)

Current profile control experiments in the LHCD plasma on TRIAM-1M

Nakamura, K., Itoh, S., Zushi, H., Sakamoto, M., Hanada, K., Jotaki, E., Pan, Y. D., Kawasaki, S. & Nakashima, H., Mar 1 2002, In : Nuclear Fusion. 42, 3, p. 340-343 4 p.

Research output: Contribution to journalArticle

2 Citations (Scopus)

Effect of Microscopic Turbulence on Magnetic Island

Furuya, A., Itoh, S. I. & Yagi, M., May 1 2002, In : journal of the physical society of japan. 71, 5, p. 1261-1267 7 p.

Research output: Contribution to journalArticle

10 Citations (Scopus)

Effect of substrate temperature on microstructure and deuterium retention of molybdenum co-deposition with oxygen

Miyamoto, M., Hirai, T., Tokunaga, K., Fujiwara, T. & Yoshida, N., Dec 1 2002, In : Journal of Nuclear Materials. 307-311, 1 SUPPL., p. 710-714 5 p.

Research output: Contribution to journalArticle

2 Citations (Scopus)

Effects of helium irradiation on high heat load properties of tungsten

Tokunaga, K., Yoshikawa, O., Makise, K. & Yoshida, N., Dec 1 2002, In : Journal of Nuclear Materials. 307-311, 1 SUPPL., p. 130-134 5 p.

Research output: Contribution to journalArticle

16 Citations (Scopus)

Effects of temperature change on vanadium alloys irradiated in HFIR

Watanabe, H., Muroga, T. & Yoshida, N., Dec 1 2002, In : Journal of Nuclear Materials. 307-311, 1 SUPPL., p. 403-407 5 p.

Research output: Contribution to journalArticle

8 Citations (Scopus)

High heat load properties of high purity CVD tungsten

Tamura, S., Tokunaga, K. & Yoshida, N., Dec 1 2002, In : Journal of Nuclear Materials. 307-311, 1 SUPPL., p. 735-738 4 p.

Research output: Contribution to journalArticle

14 Citations (Scopus)

Low void swelling in dispersion strengthened copper alloys under single-ion irradiation

Hatakeyama, M., Watanabe, H., Akiba, M. & Yoshida, N., Dec 1 2002, In : Journal of Nuclear Materials. 307-311, 1 SUPPL., p. 444-449 6 p.

Research output: Contribution to journalArticle

11 Citations (Scopus)

Microstructure of neutron irradiated SS316L/DS-Cu joint

Watanabe, H., Edwards, D. J., Aono, Y. & Yoshida, N., Dec 1 2002, In : Journal of Nuclear Materials. 307-311, 1 SUPPL., p. 335-338 4 p.

Research output: Contribution to journalArticle

Modification of tungsten coated carbon by low energy and high flux deuterium irradiation

Tokunaga, K., Doerner, R. P., Seraydarian, R., Noda, N., Yoshida, N., Sogabe, T., Kato, T. & Schedler, B., Dec 1 2002, In : Journal of Nuclear Materials. 307-311, 1 SUPPL., p. 126-129 4 p.

Research output: Contribution to journalArticle

22 Citations (Scopus)

Oxide formation of a purified V-4Cr-4Ti alloy during heat treatment and ion irradiation

Watanabe, H., Suda, M., Muroga, T. & Yoshida, N., Dec 1 2002, In : Journal of Nuclear Materials. 307-311, 1 SUPPL., p. 408-411 4 p.

Research output: Contribution to journalArticle

11 Citations (Scopus)

Probability of Statistical [Formula presented] Transition in Tokamaks

Itoh, S. I., Itoh, K. & Toda, S., Jan 1 2002, In : Physical Review Letters. 89, 21

Research output: Contribution to journalArticle

Probability of statistical L-H transition in tokamaks

Itoh, S. I., Itoh, K. & Toda, S., Nov 18 2002, In : Physical Review Letters. 89, 21, p. 2150011-2150014 4 p.

Research output: Contribution to journalArticle

42 Citations (Scopus)

Radial Electric Field Structure between Electrodes Separated by a Finite Distance in Tokamak Plasmas

Kasuya, N., Itoh, K. & Takase, Y., Jan 1 2002, In : journal of the physical society of japan. 71, 1, p. 93-98 6 p.

Research output: Contribution to journalArticle

3 Citations (Scopus)

Recycling and wall pumping in long duration discharges on TRIAM-1M

Sakamoto, M., Itoh, S., Nakamura, K., Zushi, H., Hanada, K., Jotaki, E., Pan, Y. D., Kawasaki, S. & Nakashima, H., Feb 1 2002, In : Nuclear Fusion. 42, 2, p. 165-168 4 p.

Research output: Contribution to journalArticle

46 Citations (Scopus)

Research activities on tokamaks in Japan: JT-60U, JFT-2M, and TRIAM-1M

Ninomiya, H., Kitsunezaki, A., Shimizu, M., Kuriyama, M., Kimura, H., Kawashima, H., Tsuzuki, K., Sato, M., Isei, N., Miura, Y., Hoshino, K., Kamiya, K., Ogawa, T., Ogawa, H., Miyachi, K., Itoh, S., Yoshida, N., Hanada, K., Nakamura, K., Zushi, H. & 3 others, Sakamoto, M., Jotaki, E. & Hasegawa, M., Jul 2002, In : Fusion Science and Technology. 42, 1, p. 7-31 25 p.

Research output: Contribution to journalArticle

10 Citations (Scopus)

Stochastic Transition between Turbulent Branch and Thermodynamic Branch of an Inhomogeneous Plasma

Kawasaki, M., Itoh, S. I., Yagi, M. & Itoh, K., May 1 2002, In : journal of the physical society of japan. 71, 5, p. 1268-1273 6 p.

Research output: Contribution to journalArticle

1 Citation (Scopus)

Study of fundamental features of bias effect in metals under irradiation

Kuramoto, E., Ohsawa, K. & Tsutsumi, T., Dec 1 2002, In : Journal of Nuclear Materials. 307-311, 2 SUPPL., p. 982-987 6 p.

Research output: Contribution to journalArticle

3 Citations (Scopus)

Transient response of transport at transport barrier formation

Itoh, K. & Itoh, S. I., May 2002, In : Plasma Physics and Controlled Fusion. 44, 5 A, p. A367-A372

Research output: Contribution to journalConference article

7 Citations (Scopus)

Transition in multiple-scale-lengths turbulence in plasmas

Itoh, S. I., Itoh, K., Yagi, M., Kawasaki, M. & Kitazawa, A., May 1 2002, In : Physics of Plasmas. 9, 5, p. 1947-1954 8 p.

Research output: Contribution to journalArticle

10 Citations (Scopus)

Transition probability to turbulent transport regime

Kawasaki, M., Furuya, A., Yagi, M., Itoh, K. & Itoh, S. I., May 2002, In : Plasma Physics and Controlled Fusion. 44, 5 A, p. A473-A478

Research output: Contribution to journalConference article

5 Citations (Scopus)
2003

Asymmetrical bifurcation of the radial electric field structure induced by electrode biasing in tokamaks

Kasuya, N., Itoh, K. & Takase, Y., Mar 1 2003, In : Plasma Physics and Controlled Fusion. 45, 3, p. 183-198 16 p.

Research output: Contribution to journalArticle

4 Citations (Scopus)

Blister formation and deuterium retention on tungsten irradiated by low energy and high flux deuterium plasma

Tokunaga, K., Baldwin, M. J., Doerner, R. P., Noda, N., Kubota, Y., Yoshida, N., Sogabe, T., Kato, T. & Schedler, B., Dec 1 2003, p. 242-245. 4 p.

Research output: Contribution to conferencePaper

1 Citation (Scopus)

Damage process of resolidified part on CVD-W coated molybdenum under high heat load

Tamura, S., Tokunaga, K. & Yoshida, N., Mar 1 2003, In : Journal of Nuclear Materials. 313-316, SUPPL., p. 250-254 5 p.

Research output: Contribution to journalConference article

11 Citations (Scopus)

Development of advanced blanket materials for a solid breeder blanket of a fusion reactor

Kawamura, H., Ishitsuka, E., Tsuchiya, K., Nakamichi, M., Uchida, M., Yamada, H., Nakamura, K., Ito, H., Nakazawa, T., Takahashi, H., Tanaka, S., Yoshida, N., Kato, S. & Ito, Y., Aug 1 2003, In : Nuclear Fusion. 43, 8, p. 675-680 6 p.

Research output: Contribution to journalArticle

24 Citations (Scopus)

Effect of electrode biasing on the radial electric field structure bifurcation in tokamak plasmas

Kasuya, N., Itoh, K. & Takase, Y., Apr 1 2003, In : Nuclear Fusion. 43, 4, p. 244-249 6 p.

Research output: Contribution to journalArticle

11 Citations (Scopus)

Erosion and modifications of tungsten-coated carbon and copper under high heat flux

Liu, X., Tamura, S., Tokunaga, K., Yoshida, N., Zhang, F., Xu, Z. Y., Ge, C. C. & Noda, N., Dec 1 2003, In : Plasma Science and Technology. 5, 4, p. 1887-1894 8 p.

Research output: Contribution to journalArticle

3 Citations (Scopus)

Formation of electron internal transport barrier and achievement of high ion temperature in Large Helical Device

Takeiri, Y., Shimozuma, T., Kubo, S., Morita, S., Osakabe, M., Kaneko, O., Tsumori, K., Oka, Y., Ikeda, K., Nagaoka, K., Ohyabu, N., Ida, K., Yokoyama, M., Miyazawa, J., Goto, M., Narihara, K., Yamada, I., Idei, H., Yoshimura, Y., Ashikawa, N. & 65 others, Emoto, M., Funaba, H., Inagaki, S., Isobe, M., Kawahata, K., Khlopenkov, K., Kobuchi, T., Komori, A., Kostrioukov, A., Kumazawa, R., Liang, Y., Masuzaki, S., Minami, T., Morisaki, T., Murakami, S., Muto, S., Mutoh, T., Nagayama, Y., Nakamura, Y., Nakanishi, H., Narushima, Y., Nishimura, K., Noda, M., Ohdachi, S., Ozaki, T., Peterson, B. J., Sagara, A., Saito, K., Sakakibara, S., Sakamoto, R., Sasao, M., Sato, K., Sato, M., Seki, T., Shoji, M., Suzuki, H., Tamura, N., Tanaka, K., Toi, K., Tokuzawa, T., Watanabe, K. Y., Watari, T., Xu, Y., Yamada, H., Yoshinuma, M., Itoh, K., Ohkubo, K., Satow, T., Sudo, S., Uda, T., Yamazaki, K., Hamada, Y., Matsuoka, K., Motojima, O., Fujiwara, M., Notake, T., Takeuchi, N., Torii, Y., Yamamoto, S., Yamamoto, T., Akiyama, T., Goncharov, P., Saida, T., Kawazome, H. & Nozato, H., May 1 2003, In : Physics of Plasmas. 10, 5 II, p. 1788-1795 8 p.

Research output: Contribution to journalArticle

52 Citations (Scopus)

Hydrogen accumulation in the helium implanted surface of Mo single crystals

Nagata, S., Tokunaga, K., Tsuchiya, B., Ohtsu, N., Sugawara, T. & Shikama, T., Aug 11 2003, In : Journal of Alloys and Compounds. 356-357, p. 326-329 4 p.

Research output: Contribution to journalConference article

5 Citations (Scopus)

Hydrogen and deuterium uptake in helium implanted layer of Mo and W

Nagata, S., Tsuchiya, B., Ohtsu, N., Sugawara, T., Shikama, T., Tokunaga, K., Takenaka, M. & Kuramoto, E., Mar 1 2003, In : Journal of Nuclear Materials. 313-316, SUPPL., p. 279-283 5 p.

Research output: Contribution to journalConference article

7 Citations (Scopus)

Investigation of the trapped helium and hydrogen ions in plasma facing materials for LHD using thermal desorption spectrometer and alternating glow discharge cleanings

Kubota, Y., Noda, N., Sagara, A., Suzuki, H., Masuzaki, S., Tokunaga, K., Satow, T., Yamazaki, K. & Motojima, O., Mar 1 2003, In : Journal of Nuclear Materials. 313-316, SUPPL., p. 239-244 6 p.

Research output: Contribution to journalConference article

8 Citations (Scopus)

Linear analysis of neoclassical tearing mode based on the four-field reduced neoclassical MHD equation

Furuya, A., Yagi, M. & Itoh, S., Feb 1 2003, In : Journal of the Physical Society of Japan. 72, 2, p. 313-319 7 p.

Research output: Contribution to journalArticle

8 Citations (Scopus)

Material properties of co-deposition formed on plasma facing materials in all-metal machine TRIAM-1M

Miyamoto, M., Tokunaga, K., Fujiwara, T., Yoshida, N., Morimoto, Y., Sugiyama, T. & Okuno, K., Mar 1 2003, In : Journal of Nuclear Materials. 313-316, SUPPL., p. 82-86 5 p.

Research output: Contribution to journalConference article

8 Citations (Scopus)