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Journal Articles

Degradation of methylene blue by RF plasma in water

Maehara, Tsunehiro*; Miyamoto, Ippei*; Kurokawa, Kenya*; Hashimoto, Yukio*; Iwamae, Atsushi; Kuramoto, Makoto*; Yamashita, Hiroshi*; Mukasa, Shinobu*; Toyota, Hiromichi*; Nomura, Shinfuku*; et al.

Plasma Chemistry and Plasma Processing, 28(4), p.467 - 482, 2008/08

https://doi.org/10.1007/s11090-008-9142-2
 Times Cited Count：54 Percentile：87.71(Engineering, Chemical)

Journal Articles

Compact torus injection experiments on the H.I.T. test stand and the JFT-2M tokamak

Fukumoto, Naoyuki*; Fujiwara, Makoto*; Kuramoto, Keiji*; Ageishi, Masaya*; Nagata, Masayoshi*; Uyama, Tadao*; Ogawa, Hiroaki; Kasai, Satoshi; Hasegawa, Koichi; Shibata, Takatoshi

Proceedings of American Physical Society 39th Annual Meeting of the Division of Plasma Physics, 1 Pages, 1997/00

no abstracts in English

Oral presentation

Development of thermal neutron absorber material based on boron using distributed pre-decoupler effect for spallation neutron source of J-PARC

Okutomi, Toshifumi*; Teshigawara, Makoto; Harada, Masahide; Oi, Motoki; Kuramoto, Shigeru*

no journal, , 

no abstracts in English

Oral presentation

Development of boron-containing Al-based thermal neutron absorber for MW class neutron source

Okutomi, Toshifumi*; Teshigawara, Makoto; Harada, Masahide; Oi, Motoki; Yamaguchi, Yuji; Kuramoto, Shigeru*

no journal, , 

Silver/gold-indium-cadmium (Ag/Au-In-Cd) alloys as thermal neutron absorbers, which can realize high neutron cut-off energy by combining materials with neutron resonance absorption, have been used at the high-intense spallation neutron source in J-PARC. Recently, it has become difficult to treat materials including Cd. We again focused on boron ($$^{10}$$B) having the 1/v absorption and expecting a high neutron cut-off energy as a new thermal neutron absorber. As helium (He) produced by the $$^{10}$$B(n,$$alpha$$) $$^{7}$$Li reaction causes embrittlement of material including $$^{10}$$B, it was considered that the use of $$^{10}$$B was difficult at the high-intense spallation neutron source. Therefore, we have proposed the concept called pre-decoupling, in which other thermal neutron absorber without the He production such as gadolinium (Gd) is combined with $$^{10}$$B in order to suppress the neutron absorption of $$^{10}$$B resulting reducing embrittlement. Based on the pre-decoupling concept, we have developed a material dispersing boron carbide (B$$_{4}$$C) and gadolinium oxide (Gd$$_{2}$$O$$_{3}$$) in aluminum (Al) as a base material. In this presentation, we will report tensile test results of the dispersing materials powder-sintered and the vision of the development.

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