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Futakawa, Masatoshi; Naoe, Takashi; Kogawa, Hiroyuki; Haga, Katsuhiro; Okita, Kohei*
Experimental Thermal and Fluid Science, 57, p.365 - 370, 2014/09
Times Cited Count：10 Percentile：46.63(Thermodynamics)A liquid mercury target system for a megawatt-class spallation neutron source is being developed in the world. Proton beam is injected to the mercury target to induce spallation reaction. The moment the proton beams bombard the target, pressure waves are generated in the mercury by the thermally shocked heat deposition. The pressure waves excite the mercury target vessel and negative pressure that may cause cavitation along the vessel wall. Gas-bubbles will be injected into the flowing mercury to mitigate the pressure waves and suppress the cavitation inception. The injected gas-bubbles conditions were examined and the effects were predicted experimentally and theoretically from the viewpoints of macroscopic time-scale and microscopic time-scale, i.e. in the former is dominant the interaction between the structural vibration and the pressure in mercury, and in the later is essential the pressure wave propagation process.
Futakawa, Masatoshi; Kogawa, Hiroyuki; Hasegawa, Shoichi; Ikeda, Yujiro; Riemer, B.*; Wendel, M.*; Haines, J.*; Bauer, G.*; Naoe, Takashi; Okita, Kohei*; et al.
Journal of Nuclear Materials, 377(1), p.182 - 188, 2008/06
Times Cited Count：28 Percentile：85.1(Materials Science, Multidisciplinary)no abstracts in English
Hasegawa, Ken*; Koide, Kaoru*; Muneto, Masaru*; Nagasaki, Yasushi*; Nakano, Katsushi; Yamagishi, Akiko*; Okita, Masatoshi*
JNC TN7400 2005-020, 199 Pages, 1994/04
JNC-TN7400-2005-020.PDF:11.68MB
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Tsubota, Koji*; Ochiai, Yoji*; Hanaki, Tatsumi*; Hasegawa, Ken*; Okita, Masatoshi*; Koide, Kaoru*; Nagasaki, Yasushi*
JNC TN7400 2005-019, 114 Pages, 1993/04
JNC-TN7400-2005-019.PDF:7.46MB
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Okita, Masatoshi*; Muneto, Masaru*; Hasegawa, Ken*; Nagasaki, Yasushi*; Koide, Kaoru*; Yamagishi, Akiko*; Semba, Tsuyoshi
JNC TN7400 2005-018, 241 Pages, 1992/04
JNC-TN7400-2005-018.PDF:10.21MB
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