Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Hirofumi Shirakata"'
Publikováno v:
Physica A: Statistical Mechanics and its Applications. 392:4127-4133
An investigation was made regarding to what extent road network patterns are reproduced by a crack model from a viewpoint that they seem to resemble crack patterns in morphology. A desiccation model using double-layered cellular meshes was considered
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b2820a68e9ec6b845fb166fb2d325de5
https://doi.org/10.1016/j.physa.2013.04.042
https://doi.org/10.1016/j.physa.2013.04.042
Autor:
Hirofumi Shirakata
Publikováno v:
Fusion Engineering and Design. 14:7-19
This paper describes an overview of three major magnetic fusion programmes in Japan. The first is the JT-60 machine upgrade (JT-60U) programme at Japan Atomic Energy Research Institute (JAERI). The large tokamak JT-60 is being modified in order to im
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::651ed77017e0c1a7a16491f7f0e57411
https://doi.org/10.1016/0920-3796(91)90229-j
https://doi.org/10.1016/0920-3796(91)90229-j
Autor:
Tetsuya Goto, Makoto Matsui, Kimiya Komurasaki, Yoshihiro Arakawa, Naohiro Fukuji, Masakatsu Nakano, Hirofumi Shirakata
Publikováno v:
Journal of Renewable and Sustainable Energy. 5:039101
A novel alumina (Al2O3) reduction technique for a renewable energy cycling system based on aluminum is proposed. Al2O3 powder was fed into laser-sustained plasma and thermally dissociated. The produced Al was expanded to supersonic speeds through a n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f40db9f102d723528efb125462d43d69
https://doi.org/10.1063/1.4807607
https://doi.org/10.1063/1.4807607
Publikováno v:
Japanese Journal of Applied Physics. 16:139-147
A 10-ch neutral particle energy analyser and its application to JAERI-tokamak devices are described. The analyser is a 45-degree parallel-plate electrostatic type with ten ion detectors.The analyser was calibrated for the energy and transmission effi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1c0b2f9a4bbe4afbe3b00d058c91ad71
https://doi.org/10.1143/jjap.16.139
https://doi.org/10.1143/jjap.16.139
Autor:
Masato Akiba, Hirofumi Shirakata
Publikováno v:
Journal of the Atomic Energy Society of Japan / Atomic Energy Society of Japan. 28:376-383
日本原子力研究所では,臨界プラズマ試験装置JT-60のジュール加熱実験に引き続いて,臨界プラズマ条件の達成を目指す第2段加熱(追加熱)実験を実施する予定である。その実験に必要な中性
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::305f21a6700040967fac2aa2cb83fa92
https://doi.org/10.3327/jaesj.28.376
https://doi.org/10.3327/jaesj.28.376
Autor:
Shinzaburo Matsuda, Takemasa Shibata, Masayuki Dairaku, S. Kunieda, Yutaka Ohuchi, N. Akino, Hirofumi Shirakata, Kiyoshi Shibanuma
Publikováno v:
SHINKU. 31:554-558
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ede3f6fbb3820732f031bd92ae39707f
https://doi.org/10.3131/jvsj.31.554
https://doi.org/10.3131/jvsj.31.554
Autor:
Norio Suzuki, M. Saigusa, Masayuki Sawahata, M. Honda, Kazuya Uehara, Tsuyoshi Imai, Keishi Sakamoto, T. Fujii, K. Suganuma, Y. Ikeda, Takashi Nagashima, Hirofumi Shirakata, Haruyuki Kimura, K. Yokokura, K. Kiyono, Masami Seki
Publikováno v:
Fusion Engineering and Design. 5:101-115
A system feature of the radio-frequency (RF) heating system for JT-60 is described. This system contains three units Lower Hybrid Range of Frequencies (LHRF) and one unit Ion Cyclotron Range of Frequencies (ICRF) heating systems. The LHRF heating sys
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9a9e9ba54d02ac2ba72153fb1e180c5e
https://doi.org/10.1016/s0920-3796(87)90592-8
https://doi.org/10.1016/s0920-3796(87)90592-8
Publikováno v:
Japanese Journal of Applied Physics. 17:423-428
The optimum shape of the extraction aperture in the positive electrode is investigated experimentally by using a duopigatron ion source with single hole extraction electrodes. We find that a slightly chamfered aperture gives the best beam divergence
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2f86cba7bd09a03340bf62d249a3c3d7
https://doi.org/10.1143/jjap.17.423
https://doi.org/10.1143/jjap.17.423
Autor:
Tadayoshi Sugawara, Kiyoshi Shibanuma, Masaaki Kuriyama, Kiyoshi Mizuhashi, Hiroshi Horiike, Hirofumi Shirakata, Shigeru Tanaka, Shinzaburo Matsuda, Kazuhiro Watanabe, Mamoru Matsuoka, Yoshikazu Okumura, Shigeru Kitamura, Mikito Kawai, Yoshiaki Oguchi, Masayuki Dairaku, Masato Akiba, Masanori Araki, Takemasa Shibata, Yoshihiro Ohara, T. Itoh, T. Ohga, Hirotsugu Shigematsu
Publikováno v:
Review of Scientific Instruments. 55:332-337
A prototype neutral beam injector for JT‐60 has demonstrated extraction of 100‐kV, 70‐A, 10‐s ion beams, delivering neutral beam power of 1.43 MW into the target chamber. The power‐flow measurements showed that all beam line components, inc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2bc86ed46e66ff2b4deb1e2f06cc606c
https://doi.org/10.1063/1.1137761
https://doi.org/10.1063/1.1137761
Autor:
Shigeru Tanaka, Yoshihiro Ohara, Mamoru Matsuoka, Masaaki Kuriyama, Ito Takao, Yoshikazu Okumura, Shinzaburo Matsuda, Mikito Kawai, Shigeru Kitamura, Yoshiaki Oguchi, Takemasa Shibata, Kiyoshi Shibanuma, Hiroshi Horiike, T. Ohga, Hirofumi Shirakata, Masanori Araki, Masato Akiba, Hiroshi Ohtsuki, Hidetoshi Mukaida
Publikováno v:
Review of Scientific Instruments. 53:1864-1869
High‐power long pulse ion sources were fabricated and tested at a prototype injector unit for JT‐60. Ion beams of 70 A at an energy of 75 keV were extracted repeatedly for up to 10 s. The heat loadings to each grid were within our design values a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e62dcb6ff80f9561327e1a18bab1586
https://doi.org/10.1063/1.1136913
https://doi.org/10.1063/1.1136913