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

doi:10.1088/1674-1056/26/11/110301

中国物理B ›› 2017, Vol. 26 ›› Issue (11): 110301-110301.doi: 10.1088/1674-1056/26/11/110301

• GENERAL • 下一篇

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

H Farooq, M Sarfraz, Z Iqbal, G Abbas, H A Shah

1. Department of Physics, Government College University, Lahore 54000, Pakistan;
2. Government College University, Lahore 54000, Pakistan

收稿日期:2017-05-12 修回日期:2017-09-30 出版日期:2017-11-05 发布日期:2017-11-05

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

H Farooq¹, M Sarfraz¹, Z Iqbal¹, G Abbas¹, H A Shah²

1. Department of Physics, Government College University, Lahore 54000, Pakistan;
2. Government College University, Lahore 54000, Pakistan

Received:2017-05-12 Revised:2017-09-30 Online:2017-11-05 Published:2017-11-05
Contact: G Abbas E-mail:gohar.abbas@gcu.edu.pk

摘要/Abstract

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/T_e is observed (where μ is the electron chemical potential and T_e 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.

关键词: degenerate Fermi gases, relativistic plasmas, electromagnetic waves

Abstract: 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/T_e is observed (where μ is the electron chemical potential and T_e 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.

Key words: degenerate Fermi gases, relativistic plasmas, electromagnetic waves

中图分类号: (Degenerate Fermi gases)

03.75.Ss

52.27.Ny (Relativistic plasmas) 52.35.Hr (Electromagnetic waves (e.g., electron-cyclotron, Whistler, Bernstein, upper hybrid, lower hybrid))

H Farooq,M Sarfraz,Z Iqbal,G Abbas,H A Shah. Parallel propagating modes and anomalous spatial damping in the ultra-relativistic electron plasma with arbitrary degeneracy[J]. 中国物理B, 2017, 26(11): 110301-110301.

H Farooq, M Sarfraz, Z Iqbal, G Abbas, H A Shah. Parallel propagating modes and anomalous spatial damping in the ultra-relativistic electron plasma with arbitrary degeneracy[J]. Chin. Phys. B, 2017, 26(11): 110301-110301.

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

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

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