Parallel propagating modes and anomalous spatial damping in the ultra-relativistic electron plasma with arbitrary degeneracy

• 来源期刊: 中国物理B（英文版）
• 关键词: degenerate Fermi gases relativistic plasmas electromagnetic waves
• 年，卷（期）: 2017,（11）
• 页码范围: 76-82
• 页数: 7页
• 语种: 英文
• DOI: 10.1088/1674-1056/26/11/110301

摘要

The dispersion relations of parallel propagating modes (Langmuir mode,right and left handed circular polarized waves) in the weak magnetic field limit ｜ω-k· v ｜ (>>) Ω are considered for ultra-relativistic arbitrary degenerate electron plasma.The results are presented in terms of moments of Fermi-Dirac distribution.The increase in the electron equilibrium number density from negative large (weakly degenerate) to positive large (highly degenerate) values of μ/Te is observed (where μ is the electron chemical potential and Te is the electron thermal energy).As a result,shifting of the cutoff points in all the real dispersion branches towards the higher values and increasing in the band gap between unmagnetized longitudinal and transverse modes in k-space are examined.Also,the suppression of the weak magnetic field effects in weakly magnetized right handed and left handed circular polarized waves and a decrease in the longitudinal and transverse screening effects are observed in the graphical patterns due to an increase in the equilibrium number density.