摘要
研究等离子体加热和粒子加速问题,是等离子体物理和等离子体天体物理中的重要课题.在强湍动条件下解决这一问题,必须研究孤子与粒子间的相互作用。本文评述了解决这一问题的几种方法和这方面取得的进展,探讨了存在的问题。孤子与等离子体粒子相互作用,其结果是使分布函数形成高度增殖的超热尾和可能形成双峰结构,在一定条件下还具有加热作用。这对于研究天体物理中某些辐射机理具有重要意义。
Both the heating of plasma and the acceleration of particles are important topics in plasma physics and plasma astrophysics. For solving these problems in the strong turbulent regime it is necessary to study the interaction of solitons with particles. This paper reviews several methods that have been used to solve these problems successfully, and the progress made at present, and discusses some still unsolved problems. As the results of interaction of solitons with plasma particles, a highly populated suprathermal tails will be formed, and it may be possible to have a double-humped structure in the electron distribution, and under certain condition, the plasma may be heated. These are important for the investigation of some radiation mechanisms in astrophysics.
出处
《力学进展》
EI
CSCD
北大核心
1992年第2期194-207,共14页
Advances in Mechanics
关键词
孤子
粒子
加速作用
等离子体
strong turbulence
modulational instability
solitoni Born approximation
Fokker-Planck equation
integrating along the unperturbed orbits
Zakharov equations
