期刊
CHINESE PHYSICS B
卷 20, 期 6, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1674-1056/20/6/065201
关键词
relativistic plasma; Landau damping; nonextensive distribution; longitudinal oscillation
资金
- National Natural Science Foundation of China [10963002]
- International S & T Cooperation Program of China and Jiangxi Province [2009DFA02320]
- Nanchang University
- National Basic Research Program of China [2010CB635112]
The generalized dispersion equation for longitudinal oscillation in an unmagnetized, collisionless, isotropic and relativistic plasma is derived in the context of nonextensive q-distribution. An analytical expression for the Landau damping is obtained in an ultra-relativistic regime, which is related to q-parameter. In the limit q -> 1, the result based on the relativistic Maxwellian distribution is recovered. It is shown that the interactions between the wave and particles are stronger and the waves are more strongly damped for lower values of q-parameter. The results are explained by the increased number of superthermal particles or low velocity particles contained in the plasma with the nonextensive distribution.
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