Kinetic Analysis of γ-Ray-Generating Reactions for Fuel Ion and Energetic Particle Diagnostics of D-T Fusion Plasma(Cross-disciplinary Physics and Related Areas of Science and Technology)
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概要
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In D-T fusion plasma seeded with a small amount of ^6Li, monochromatic 0.429-, 0.478- and 0.981- MeV γ rays are produced in the ^6Li+D and ^6Li+T nuclear reactions. In the present paper we investigate these processes in the appropriate plasma kinetic model. The non-Maxwellian tails of deuteron and triton distribution functions created due to nuclear elastic scattering of D-T α-particles by fuel ions are found to enhance crucially production of the diagnostic γ rays. This result can be considered as the first explicit demonstration that in a fusion plasma the role of suprathermal reaction channels induced by energetic knock-on ions can become comparable with (or even dominate) that of thermal ones. Possibilities of fuel ion and α-particle diagnostics using the reaction-produced γ rays are also discussed. It is pointed out for the first time that the behavior of α-particles during slowing-down could be diagnosed by detecting 0.981-MeV α-rays emitted in a nuclear reaction between knock-on tritons and ^6Li admixture ions.
- 社団法人日本物理学会の論文
- 2006-02-15
著者
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NAKAMURA Makoto
Department of Gastroenterology, Toyokawa City Hospital
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NAKAO Yasuyuki
Department of Nuclear Engineering, Kyushu University
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Nakao Yasuyuki
Department Of Applied Quantum Physics And Nuclear Engineering Kyushu University
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Voronchev Victor
Institute Of Crystallography Russian Academy Of Sciences
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Voronchev Victor
Institute Of Nuclear Physics Moscow State University
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Mitarai Osamu
Institute Of Industrial Science And Technical Research Kyushu Tokai University
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HEGI Kotaro
Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University
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MATSUURA Hideaki
Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University
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Hegi Kotaro
Department Of Applied Quantum Physics And Nuclear Engineering Kyushu University
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Nakamura Makoto
Department Of Applied Chemistry Faculty Of Systems Engineering Wakayama University
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Matsuura Hideaki
Department Of Applied Quantum Physics And Nuclear Engineering Kyushu University
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