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Kawano, Yasunori; Nakano, Tomohide; Isayama, Akihiko; Hatae, Takaki; Konoshima, Shigeru; Oyama, Naoyuki; Kondoh, Takashi; Tamai, Hiroshi; Kubo, Hirotaka; Asakura, Nobuyuki; et al.
Europhysics Conference Abstracts (CD-ROM), 29C, 4 Pages, 2005/00
In order to mitigate the post-disruption runaway electrons, experiments has been carried out with impurity pellet injection. As a result, we have observed the prompt exhaust of the runaway electrons and the reduction of runaway plasma. We have presented one possible explanation for basic behavior of the runaway plasma current that it follows the balance of the avalanche generation of runaway electrons and their slowing down predicted by the model, including effects by synchrotron radiation. On the other hand, standing on the fact that the current quench time is extended by runaway electrons, the experiment for avoiding the current quench by runaway electrons has been carried out. The runaway electrons reinforced the discharge to survive against the low Te of less than several tens eV and an additional impurity pellet injection, and thus the plasma current was maintained and terminated as programmed. To study the dynamics of runaway electrons precisely, a new active and direct diagnostic concept using the laser inverse Compton scattering has been proposed.
Esirkepov, T. Z.; Bulanov, S. V.; Nishihara, Katsunobu*; Tajima, Toshiki
Physical Review Letters, 92(25), p.255001_1 - 255001_4, 2004/06
Times Cited Count：36 Percentile：79.13(Physics, Multidisciplinary)Coherent synchrotron radiation can be emitted by relativistic electromagnetic subcycle solitons dwelling in a low-temperature collision-less plasma. Using three-dimensional particle-in-cell simulations we show that solitons, left in a wake of a relativistically intense short circularly polarized laser pulse in the plasma, emit spiral electromagnetic wave, as a result of charge density oscillations in the wall of the soliton cavity. This high-frequency afterglow persists for tens of Langmuir periods.
Sato, Yasunori*; Yamaguchi, Daichi*; Oshima, Akihiro*; Kato, Takanori*; Ikeda, Shigetoshi*; Aoki, Yasushi*; Tanaka, Shigeru; Tabata, Yoneho*; Washio, Masakazu*
JAERI-Conf 2003-001, p.245 - 250, 2003/03
no abstracts in English
Yokoya, Akinari
Hoshako, 10(4), p.392 - 412, 1997/09
no abstracts in English
Maezawa, Hiroshi*; Furusawa, Yoshiya*; Kobayashi, Katsumi*; Hieda, Kotaro*; Suzuki, Masao*; Usami, Noriko*; Yokoya, Akinari; Mori, Tomoyuki*
Acta Oncologica, 35(7), p.889 - 894, 1997/01
Times Cited Count：7 Percentile：22.9(Oncology)no abstracts in English
Hieda, Kotaro*; Hirono, Taisuki*; Azami, Akira*; Suzuki, Masao*; *; Maesawa, Hiroshi*; Usami, Noriko*; Yokoya, Akinari; Kobayashi, Katsumi*
International Journal of Radiation Biology, 70(4), p.437 - 445, 1996/10
Times Cited Count：48 Percentile：95.41(Biology)no abstracts in English
Yokoya, Akinari
SR Kagaku Gijutsu Joho, 4(1), p.9 - 17, 1994/01
no abstracts in English
Shibata, Hiromi*; Yoshida, Yoichi*; Tagawa, S.*; Aoki, Yasushi; Namba, Hideki
Nuclear Instruments and Methods in Physics Research A, 327, p.53 - 56, 1993/00
Times Cited Count：8 Percentile：64.03(Instruments & Instrumentation)no abstracts in English
Suzuki, Yasuo
Purazuma, Kaku Yugo Gakkai-Shi, 68(5), p.488 - 502, 1992/11
no abstracts in English
Yokoya, Akinari; Usami, Noriko*; Kobayashi, Katsumi*
Photon Factory News, 10(1), p.13 - 14, 1992/05
no abstracts in English
Yokoya, Akinari; Kobayashi, Katsumi*; Usami, Noriko*; *; Hieda, Kotaro*; *
Shinku Shigaisen (50nm Ijo) Niyoru Kakusan Sonsho Yuhatsu Kiko No Sogoteki Kenkyu, p.56 - 59, 1992/03
no abstracts in English
Yokoya, Akinari
Hoshako, 5(1), p.83 - 84, 1992/02
no abstracts in English
Yokoya, Akinari; Kobayashi, Katsumi*; Usami, Noriko*
Photon Factory Activity Report, P. 299, 1992/00
no abstracts in English
*; Yokomizo, Hideaki;
JAERI-M 90-124, 54 Pages, 1990/08
no abstracts in English
Yokomizo, Hideaki; ; *; ; *; *; *; Kabasawa, M.*; Harami, Taikan; Suzuki, Yasuo
Nuclear Instruments and Methods in Physics Research A, 291(1-2), p.472 - 480, 1990/00
Times Cited Count：2 Percentile：43.41(Instruments & Instrumentation)no abstracts in English
Kaminaga, Kiichi; Kanari, Yukiko; Sakamoto, Yuka; Narita, Ayumi; Usami, Noriko*; Kobayashi, Katsumi*; Noguchi, Miho; Yokoya, Akinari
no journal, ,
no abstracts in English
Yokoya, Akinari; Sugaya, Yuki*; Oka, Toshitaka*; Ukai, Masatoshi*; Fujii, Kentaro
no journal, ,
no abstracts in English
