Stopping power for strong beam-plasma coupling
Stopping power for strong beam-plasma coupling
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DOI：
10.1017/s0263034602203225
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发表时间：
2002-09-01
影响因子：
0.9
通讯作者：
Gericke, DO
中科院分区：
文献类型：
--
作者：
Gericke, DO
给出了强束-等离子体耦合的阻止功率模型。该模型通过T-矩阵方法来计算停止力，该方法正确地描述了近距离双星碰撞。在束流粒子-等离子体电子相互作用中使用了与速度相关的屏蔽长度，以考虑动态屏蔽效应。该模型对低束和高束粒子速度具有正确的极限行为，并且在耦合强度很高的情况下与模拟数据符合得很好。与其他只包含强关联和/或动态筛选的理论相比，发现了较小的能量损失；这导致了相当长的停止范围。
A model for the stopping power for strong beam-plasma coupling is presented. The model calculates the stopping power through a T-matrix approach which correctly describes close binary collisions. A velocity-dependent screening length is used in the beam particle-plasma electron interaction to include dynamic screening effects. The model has the correct limiting behavior for low and high beam particle velocities and agrees well with simulation data up to very high coupling strengths. Compared to other theories, which include strong correlations and/or dynamic screening only approximately, a smaller energy loss has been found; this leads to a considerably longer stopping range.