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物理学报. 1983, 32(8): 1027-1034.
doi: 10.7498/aps.32.1027.
漂移波湍流中“clumps”理论
- 收稿日期: 1982-07-17
- 刊出日期: 2005-07-21
摘要: 本文基于Misguich和Balescu提出的轨道的随机处理发展了漂移波湍流中“clumps”的一种理论。指出clump效应不仅存在于非磁化湍性等离子体中也存在于磁化湍性等离子体中。它的存在使得实际横越磁场的扩散比Dupree理论预言的要小得多。导出了clumps寿命的一个明晰的表达式,它正比于横越磁场扩散的特征时间并对数地依赖于粒子的初始相对位置。
English Abstract
THEORY OF “CLUMPS” IN DRIFT-WAVE TURBULENCE
- Received Date:
17 July 1982
- Published Online:
21 July 2005
Abstract: In this paper, a theory of "clumps" in drift-wave turbulence is developed, based on the stochastic treatment of trajectories developed by Misguich and Balescu. It is shown that there exists a clump effect in a magnetized turbulent plasma as well as in an un-magnetized one. The existence of this effect makes the actual diffusion across the magnetic field much smaller than the diffusion predicted by Dupree's theory. Ah explicit expression for the clump life-time is derived this life-time is proportional to the diffusion (across magnetic field) characteristic time and depends logarithmically on the initial relative position of particles.
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