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O in thermal neutron capture of 
ONagai, Yasuki*; Segawa, Mariko; Osaki, Toshiro*; Matsue, Hideaki; Muto, Kazuo*
Physical Review C, 76(5), p.051301_1 - 051301_6, 2007/11
Times Cited Count：9 Percentile：56.35(Physics, Nuclear)The primary 
1 
-ray transition strength from the thermal neutron capture of O to the 3/2
state, 18 keV below the neutron threshold of 
O, was found to be about two hundred thousand times stronger than that to the 1/2 excited state, 729 keV below the threshold. In addition, the 1 strength from the 3/2 state leading to the 3/2
state with three (
)
neutrons was six times stronger than that to the 5/2 ground state with a single () neutron. These anomalous -ray decay patterns give the first clear experimental evidence for the predicted property of the 3/2 state as mainly having a one-hole-four-particle configuration. Unique features of the O ground state with a two-hole-four-particle configuration and of the 3/2 state combined with a discrete prompt -ray spectroscopy following the thermal neutron capture of O enabled us to exclusively identify the configuration of the 3/2 state.
Motojima, Osamu*; Yamada, Hiroshi*; Komori, Akio*; Oyabu, Nobuyoshi*; Muto, Takashi*; Kaneko, Osamu*; Kawahata, Kazuo*; Mito, Toshiyuki*; Ida, Katsumi*; Imagawa, Shinsaku*; et al.
Nuclear Fusion, 47(10), p.S668 - S676, 2007/10
Times Cited Count：34 Percentile：73.64(Physics, Fluids & Plasmas)The performance of net-current free heliotron plasmas has been developed by findings of innovative operational scenarios in conjunction with an upgrade of the heating power and the pumping/fuelling capability in the Large Helical Device (LHD). Consequently, the operational regime has been extended, in particular, with regard to high density, long pulse length and high beta. Diversified studies in LHD have elucidated the advantages of net-current free heliotron plasmas. In particular, an internal diffusion barrier (IDB) by a combination of efficient pumping of the local island divertor function and core fuelling by pellet injection has realized a super dense core as high as 5
10
m
, which stimulates an attractive super dense core reactor. Achievements of a volume averaged beta of 4.5% and a discharge duration of 54 min with a total input energy of 1.6 GJ (490 kW on average) are also highlighted. The progress of LHD experiments in these two years is overviewed by highlighting IDB, high-beta and long pulse.
Motojima, Osamu*; Yamada, Hiroshi*; Komori, Akio*; Oyabu, Nobuyoshi*; Kaneko, Osamu*; Kawahata, Kazuo*; Mito, Toshiyuki*; Muto, Takashi*; Ida, Katsumi*; Imagawa, Shinsaku*; et al.
Proceedings of 21st IAEA Fusion Energy Conference (FEC 2006) (CD-ROM), 12 Pages, 2007/03
The performance of net-current free Heliotron plasmas has been developed by findings of innovative operational scenarios in conjunction with an upgrade of the heating power and the pumping/fueling capability in the Large Helical Device (LHD). Consequently, the operational regime has been extended, in particular, with regard to high density, long pulse length and high beta. Diversified studies in LHD have elucidated the advantages of net-current free heliotron plasmas. In particular, an Internal Diffusion Barrier (IDB) by combination of efficient pumping of the local island divertor function and core fueling by pellet injection has realized a super dense core as high as 510m, which stimulates an attractive super dense core reactor. Achievements of a volume averaged beta of 4.5 % and a discharge duration of 54-min. with a total input energy of 1.6 GJ (490 kW in average) are also highlighted. The progress of LHD experiments in these two years is overviewed with highlighting IDB, high 
and long pulse.
Ishiyama, Shintaro; Muto, Yasushi; Fumizawa, Motoo; Tsukazaki, Kazuo*
Nihon Genshiryoku Gakkai Wabun Rombunshi, 1(2), p.164 - 176, 2002/06
no abstracts in English
Kodama, Ryosuke*; Yoshida, Hidetoshi; *; Nishitani, Takeo; Muto, Sadatsugu*; *; Matsuda, Toshiaki; *; Kawahata, Kazuo*; Isobe, Mitsutaka*; et al.
Purazuma, Kaku Yugo Gakkai-Shi, 74(10), p.1208 - 1213, 1998/10
no abstracts in English
Takahashi, Teruhiko; Niinuma, Shinichi; Futagawa, Kazuo; Otsuka, Yoshikazu; Muto, Yasushi; Sakai, Toshiya; Umehara, Takashi; Shimizu, Isamu; Umino, Takaaki; Yamada, Satoshi; et al.
no journal, ,
no abstracts in English
