Impact of temperature anisotropy on longitudinal and transverse wave dynamics in unmagnetized partially degenerate electron plasmas

被引：0

作者：

Anwar, H. ^{[1
]}

Abbas, G. ^{[1
]}

Fatima, H. ^{[1
]}

Khalid, H. ^{[1
]}

Rehman, M. A. ^{[1
]}

Iqbal, Z. ^{[1
]}

机构：

[1] Govt Coll Univ, Dept Phys, Lahore 54000, Pakistan

来源：

EUROPEAN PHYSICAL JOURNAL D | 2025年 / 79卷 / 05期

关键词：

Anisotropy - Collisional plasmas - Magnetoplasma - Nitrogen plasma - Plasma collision processes - Plasma interactions - Plasma simulation - Plasma theory - Semiconductor plasmas;

D O I：

10.1140/epjd/s10053-025-00988-x

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Thermal temperature anisotropy plays a crucial role in the spectral analysis of waves in both laboratory and space plasmas, particularly when finite temperature effects are important. Using the linearized Vlasov-Maxwell model, we derive the dispersion relations for both longitudinal and transverse modes in an anisotropic, collisionless, homogeneous electron plasma, incorporating arbitrary levels of temperature degeneracy through the Fermi-Dirac distribution. The response functions are expressed in terms of the plasma dispersion function adapted for the Fermi-Dirac distribution. Our results are further approximated using asymptotic expansions and series approximations of the plasma dispersion function. The analysis shows that thermal anisotropy has a more significant influence on the frequency spectrum in weakly degenerate plasma regions compared to highly degenerate ones. The derived results have broad applicability, extending from laboratory conditions to astrophysical plasmas.

引用

页数：10

共 33 条

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