Impurity transport in tokamaks in the plateau to Pfirsch-Schlüter regimes

Ming-Sheng Chu, John M. Rawls, Seung Kai Wong, F. L. Hinton

研究成果: Article同行評審

4 引文 斯高帕斯(Scopus)

摘要

Neoclassical transport coefficients for ion and impurity species are computed in a large aspect ratio toroidal magnetic confinement system for intermediate-to-high collision frequencies. A large range of values of the relevant density and charge parameters is explored and terms of order (m i/ml)1/2 are retained. The behavior of the transport coefficients is found to depend on the collisionality of both the ions and the impurities. A simple approximate analytic representation of these results which incorporates the correct asymptotic plateau and Pfirsch-Schlüter behavior is presented. In the plateau regime, when (n l/ni)(ml/mi)1/2≪1, the inward impurity flux is found to be suppressed for experimentally obtainable plasma parameters, implying that the time scale for impurity concentration could be too long to be observable.

原文English
頁(從 - 到)127-135
頁數9
期刊Physics of Fluids
20
發行號1
DOIs
出版狀態Published - 1977 一月 1

All Science Journal Classification (ASJC) codes

  • 凝聚態物理學

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