Map model for nonlinear alpha particle interaction with toroidal Alfve´n waves
作者:
H. L. Berk,
B. N. Breizman,
Huanchun Ye,
期刊:
Physics of Fluids B: Plasma Physics
(AIP Available online 1993)
卷期:
Volume 5,
issue 5
页码: 1506-1515
ISSN:0899-8221
年代: 1993
DOI:10.1063/1.860890
出版商: AIP
数据来源: AIP
摘要:
A map model has been developed for studying the nonlinear interaction of alpha particles with the toroidal Alfve´n eigenmodes. The map is constructed by assuming a linear interaction during a single poloidal transit, which allows the study of the nonlinear interaction over many transits. By using this map, analytic expressions are obtained for the particle nonlinear bounce frequency, and the wave amplitude threshold for the onset of particle orbit stochasticity. The map model can also facilitate self‐consistent simulations which incorporate the time variation of the waves.
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