Exact treatment of charge exchange loss in beam driven currents

K. Okano

研究成果: Article査読

4 被引用数 (Scopus)

抄録

A two-dimensional fast ion Fokker-Planck equation is analytically solved with a new cross-section formula for charge exchange loss. The new formula includes the exact cross-section dependence on ion energy and is valid from 2 keV up to several hundred keV, where charge exchange is always negligible. A loss of beam driven currents due to the charge exchange has been analysed, using this analytic solution of Fokker-Planck equation. It has been revealed that the previous rough treatment with the charge exchange cross-section, proportional to 1/ nu , sometimes results in a considerable error. By a systematic parametric survey, the reduction rates for beam driven currents, due to charge exchange loss, are rearranged and tabled. Also, a reduction in global current drive efficiency by charge exchange in a next generation Tokamak is briefly discussed.

本文言語English
論文番号006
ページ(範囲)1115-1126
ページ数12
ジャーナルPlasma Physics and Controlled Fusion
29
9
DOI
出版ステータスPublished - 1987 12 1

ASJC Scopus subject areas

  • 原子力エネルギーおよび原子力工学
  • 凝縮系物理学

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