Electromagnetic drift waves in nonuniform quantum magnetized electron-positron-ion plasmas

被引：23
|
作者：
Ren, Haijun [1 ]
Wu, Zhengwei [1 ,2 ]
Cao, Jintao [1 ]
Chu, Paul K. [2 ]
机构：
[1] Univ Sci & Technol China, CAS Key Lab Basic Plasma Phys, Hefei 230026, Peoples R China
[2] City Univ Hong Kong, Dept Phys & Mat Sci, Kowloon, Hong Kong, Peoples R China
来源：
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL | 2008年 / 41卷 / 11期
关键词：
D O I：
10.1088/1751-8113/41/11/115501
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Electromagnetic drift waves in a nonuniform quantum magnetized electron positron-ion (EPI) plasma are studied. By using the quantum hydrodynamic equations with magnetic fields of the Wigner-Maxwell system, we obtained a new dispersion relation in which ions' motions are not considered. The positrons component (featured by the parameter.), density gradient of electrons, and of positrons are shown to have a significant impact on the dispersion relation. Our results should be relevant to dense astrophysical objects, e. g. white dwarf and pulsar magnetospheres, as well as low-temperature laboratory EPI plasmas.
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页数：9
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