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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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.

収録刊行物

  • Journal of the Physical Society of Japan   [巻号一覧]

    Journal of the Physical Society of Japan 75(2), "024801-1"-"024801-8", 2006-02-15  [この号の目次]

    一般社団法人日本物理学会

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各種コード

  • NII論文ID(NAID)
    10018806605
  • NII書誌ID(NCID)
    AA00704814
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    00319015
  • NDL 記事登録ID
    7813380
  • NDL 雑誌分類
    ZM35(科学技術--物理学)
  • NDL 請求記号
    Z53-A404
  • データ提供元
    CJP書誌  NDL  NII-ELS  JPS 
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