Simulation model for lower hybrid current drive
作者:
Paul T. Bonoli,
Ronald C. Englade,
期刊:
Physics of Fluids(00319171)
(AIP Available online 1986)
卷期:
Volume 29,
issue 9
页码: 2937-2950
ISSN:0031-9171
年代: 1986
DOI:10.1063/1.865494
出版商: AIP
数据来源: AIP
摘要:
A simulation model for steady‐state, lower hybrid current drive is described which incorporates a relativistic, one‐dimensional Fokker–Planck calculation and a toroidal ray tracing code. Two‐dimensional (v⊥) effects are included in the Fokker–Planck analysis in the form of a large perpendicular electron temperature that results from pitch angle scattering. An increase in the parallel refractive index of the lower hybrid waves, arising from toroidal geometry effects, is proposed as a physical mechanism whereby injected rf waves at high phase velocity (ve≪v∥≲c) can interact via the Landau resonance with electrons at low phase velocity (v∥≲3ve). Numerical results relevant to the Alcator C [Phys. Rev. Lett.53, 450 (1984)] and PLT [Phys. Rev. Lett.49, 1255 (1982)] experiments are presented which demonstrate the dependency of the current drive efficiency on various plasma parameters.
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