DAMPING OF ION-ACOUSTIC-WAVES IN THE PRESENCE OF ELECTRON-ION COLLISIONS

被引：58

作者：

EPPERLEIN, EM

SHORT, RW

SIMON, A

机构：

[1] Laboratory for Laser Energetics, University of Rochester, Rochester, NY 14623-1299

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 69卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.69.1765

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The properties of ion-acoustic waves in a plasma are investigated by analytically solving the electron Fokker-Planck (FP) and cold-ion fluid equations for arbitrary electron-ion (e-i) collision strength. This is achieved by developing a reduced form of the FP equation with a generalized collision frequency. It is demonstrated that the effective wave damping can be treated as a combination of collisional and collisionless mechanisms. Contrary to several previous reports, weak e-i collisions are shown to increase the damping rate above the collisionless electron Landau limit.

引用

页码：1765 / 1768

页数：4

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