Enhancement in the lonization Cross-Section of a 350 keV Hydrogen Beam on JT-60U Plasmas

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抄録

Enhancement of the effective ionization cross-section has been investigated by shine-through measurements of a 350 keV hydrogen neutral beam on the JT-60U tokamak. The beam was injected into hydrogen plasmas with an electron density range of (1.0-4.1)×l0^19 m^-3 and an effective ionic charge of 1.3-2.2. Except for the low density region near 1×10^19 m^-3, the experimental shine-through (fraction of beam power not absorbed by the plasma) was remarkably smaller than predictions based on single-step ionization processes, suggesting that the effective ionization cross-section of the neutral beam was enhanced by multi-step ionization. The enhancement factor of the cross-section increased with electron density up to a maximum of 80%. It was shown that the experimental enhancement agreed with the theoretical predictions of Janev et al. [6] .

収録刊行物

  • プラズマ・核融合学会誌 = Journal of plasma and fusion research

    プラズマ・核融合学会誌 = Journal of plasma and fusion research 73(12), 1374-1377, 1997-12-25

    プラズマ・核融合学会

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被引用文献:  3件中 1-3件 を表示

各種コード

  • NII論文ID(NAID)
    110003826823
  • NII書誌ID(NCID)
    AN10401672
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    09187928
  • NDL 記事登録ID
    4378164
  • NDL 雑誌分類
    ZM35(科学技術--物理学)
  • NDL 請求記号
    Z15-8
  • データ提供元
    CJP書誌  CJP引用  NDL  NII-ELS  NDL-Digital 
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