简并金属等离子体纵振荡的色散关系  

Dispersion Relation of Longitudinal Oscillations in the Degenerate Metal-plasmas

作　　者：肖庆生[1] 刘三秋[1] 张文东[1] 陈约奇[2] 

机构地区：[1]南昌大学物理学系,江西南昌330031 [2]江西蓝天学院复杂生命动力学研究室,江西南昌330098

出　　处：《南昌大学学报（理科版）》2007年第6期549-553,共5页Journal of Nanchang University(Natural Science)

基　　金：教育部新世纪优秀人才支持计划资助项目(NCET-05-0575);江西省跨世纪学术和技术带头人培养计划资助项目(040010)

摘　　要：在计入离子运动对色散关系产生影响的基础上,数值求解了完全简并金属等离子体中纵振荡的完全色散关系。将其色散曲线与纯电子等离子体色散曲线对比,得到了是否需要考虑离子贡献的分界线。此外,对比不同电子-离子温度比值、不同电子温度、不同密度的色散曲线,还得到了电子-离子温度之比不影响色散关系、密度越大振荡的截止频率就越大等结论。Considering of ions contribution in the Maxwell - Vlasov equations, the complete dispersion relation （which is filled the voids of the MHD theory and two - fluid model theory） of longitudinal oscillations in the degenerate metal - plasmas is obtained by numerical method. Comparing the dispersive curves of electron - ion - plas- mas with that of electron - plasmas, one gets the separatrix whether include ions contribution or not. In addition, some curves in different ratios between electron temperature and ion temperature ,in different electron temperatures and in different densities are presented, and the conclusion that the ratios between electron temperature and ion temperature will not affect dispersion relations is easily obtained.

关 键 词：金属等离子体 费米分布 色散关系 

分 类 号：O534[理学—等离子体物理]