Negative muon capture ratios for nitrogen oxide molecules

Ninomiya, Kazuhiko*; Ito, Takashi; Higemoto, Wataru; Kawamura, Naritoshi*; Strasser, P.*; Nagatomo, Takashi*; Shimomura, Koichiro*; Miyake, Yasuhiro*; Kita, Makoto*; Shinohara, Atsushi*; et al.

Journal of Radioanalytical and Nuclear Chemistry, 319(3), p.767 - 773, 2019/03

https://doi.org/10.1007/s10967-018-6366-3

Integrated modelling of toroidal rotation with the 3D non-local drift-kinetic code and boundary models for JT-60U analyses and predictive simulations

Honda, Mitsuru; Satake, Shinsuke*; Suzuki, Yasuhiro*; Yoshida, Maiko; Hayashi, Nobuhiko; Kamiya, Kensaku; Matsuyama, Akinobu; Shinohara, Koji; Matsunaga, Go; Nakata, Motoki; et al.

Nuclear Fusion, 55(7), p.073033_1 - 073033_11, 2015/07

https://doi.org/10.1088/0029-5515/55/7/073033

Experimental analyses and predictive simulations of toroidal rotation driven by the neoclassical toroidal viscosity in rippled tokamaks

Honda, Mitsuru; Satake, Shinsuke*; Suzuki, Yasuhiro*; Matsunaga, Go; Shinohara, Koji; Yoshida, Maiko; Matsuyama, Akinobu; Ide, Shunsuke; Urano, Hajime

Nuclear Fusion, 54(11), p.114005_1 - 114005_14, 2014/11

https://doi.org/10.1088/0029-5515/54/11/114005

Neutron diffraction study on anisotropy of strain age hardening in ferritic steel

Suzuki, Tetsuya*; Yamanaka, Keisuke*; Ishino, Mayuko*; Shinohara, Yasuhiro*; Nagai, Kensuke*; Tsuru, Eiji*; Xu, P. G.

Tetsu To Hagane, 98(6), p.262 - 266, 2012/06

https://doi.org/10.2355/tetsutohagane.98.262

Proton-proton phase shifts calculations in momentum space by a rigorous Coulomb treatment

Oryu, Shinsho*; Hiratsuka, Yasuhiro*; Nishinohara, Satoshi*; Chiba, Satoshi

Journal of Physics G; Nuclear and Particle Physics, 39(4), p.045101_1 - 045101_12, 2012/04

https://doi.org/10.1088/0954-3899/39/4/045101

We present a two-body calculation method for a rigorous treatment of Coulomb interaction in momentum (-)space. The method is based on a modified Coulomb potential which is equivalent to the genuine Coulomb potential in configuration (-)space. We also use the two-potential theory with the auxiliary potential. The calculated proton-proton phase shifts are in very good agreement with the experimental data for the states . The phase shifts for the states are also calculated. Practical applications of our method in a few hadron problems are discussed.

Estimation of kinetic parameters based on chirping Alfvn Eigenmodes

Lesur, M.*; Idomura, Yasuhiro; Shinohara, Koji; Garbet, X.*

Proceedings of 23rd IAEA Fusion Energy Conference (FEC 2010) (CD-ROM), 8 Pages, 2011/03

Alfvn Eigenmodes (AEs) with frequency sweeping (chirping AEs) are analyzed based on the so-called Berk-Breizman (BB) model. Kinetic parameter regimes with chirping nonlinear solutions are delimited, and a new quasi-periodic chirping regime is found, where the quasi-period of chirping events depends on the linear growth rate. Fundamental kinetic parameters such as the linear drive and the external damping rate are estimated by fitting nonlinear chirping characteristics between the experiment and the BB model. This approach is applied to Toroidicity-induced AEs on JT-60U, which suggests the existence of modes far from marginal stability. Two collision models are considered, and it is shown that dynamical friction and velocity-space diffusion are essential to reproduce nonlinear features observed in experiments. The results are validated by recovering measured growth and decay of perturbation amplitude, and by estimating collision frequencies from experimental equilibrium data.

29th report of ITPA topical group meeting

Isayama, Akihiko; Sakakibara, Satoru*; Furukawa, Masaru*; Matsunaga, Go; Yamazaki, Kozo*; Watanabe, Kiyomasa*; Idomura, Yasuhiro; Sakamoto, Yoshiteru; Tanaka, Kenji*; Tamura, Naoki*; et al.

Purazuma, Kaku Yugo Gakkai-Shi, 86(6), p.374 - 377, 2010/06

http://ci.nii.ac.jp/naid/40017204455

no abstracts in English

Report on ITPA meetings, 24

Idomura, Yasuhiro; Yoshida, Maiko; Yagi, Masatoshi*; Tanaka, Kenji*; Hayashi, Nobuhiko; Sakamoto, Yoshiteru; Tamura, Naoki*; Oyama, Naoyuki; Urano, Hajime; Aiba, Nobuyuki; et al.

Purazuma, Kaku Yugo Gakkai-Shi, 84(12), p.952 - 955, 2008/12

http://www.jspf.or.jp/Journal/PDF_JSPF/jspf2008_12/jspf2008_12-952.pdf

no abstracts in English

Annual Report on the Effluent Control of Tokai Works FY2003

Mizutani, Tomoko; Uezu, Yasuhiro; Hitoshi, Watanabe,; Takeishi, Minoru; Shinohara, Kunihiko; Hiyama, Yoshinori*; Kikuchi, Masaaki*

JNC TN8440 2003-024, 144 Pages, 2003/11

JNC-TN8440-2003-024.pdf:7.72MB

This report was written about the effluent control in JNC Tokai Works from 1st April 2002 to 31th March 2003. In this period, the quantities and concentrations of retroactivities in liquid waste from Tokai Works were under the discharge limits of "Safety Regulations for the Tokai Reprocessing Plant" and regulations of government.

New determination method for iodine-129 in the environmental samples by using MIP-MS

Uezu, Yasuhiro; Nakano, Masanao; Fujita, Hiroki; Watanabe, Hitoshi; Maruo, Yoshihiro; Shinohara, Kunihiko

Proceedings of the International Workshop on Distribution and Speciation of Radionuclides in the Environment, p.354 - 357, 2000/00

Iodine-129 is an important radionuclide for environmental assessment, because it has a long half-life. A new analytical technique with Microwave Induced Plasma Mass Spectrometry (MIP-MS) was applied to the determination of iodine-129 (I) in the environmental samples. Environmental samples contain a large amount of matrices elements. Therefore, the interference elements were eliminated by ashing at 1000C, and iodine was trapped by activated charcoal and finally extracted by tetramethylammonium hydroxide (TMAH). I-129 in the soil sample was also analyzed by conventional method [neutron activation analysis (NAA)] and MIP-MS method. The analytical data by MIP-MS and NAA methods showed excellent agreement.