Oblique modulation of electron acoustic waves in superthermal plasma

被引：4
|
作者：
Bansal, Sona [1 ]
Gill, Tarsem Singh [2 ]
Aggarwal, Munish [3 ]
机构：
[1] IK Gujral Punjab Tech Univ, Kapurthala 144601, India
[2] Guru Nanak Dev Univ, Dept Phys, Amritsar 143005, Punjab, India
[3] Lyallpur Khalsa Coll Engn, Dept Appl Sci, Jalandhar 144001, Punjab, India
来源：
PHYSICA SCRIPTA | 2019年 / 94卷 / 10期
关键词：
electron acoustic solitons; superthermal electrons; oblique perturbation; SOLITARY WAVES; DISPERSION FUNCTION; INSTABILITY; DISTRIBUTIONS; PROPAGATION; GENERATION; SOLITONS;
D O I：
10.1088/1402-4896/ab24f3
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Theoretical and numerical investigations are presented for the oblique modulation of electron acoustic (EA) waves in three-component plasma consisting of cold electrons, superthermal hot electrons and stationary ions. To study the stability criteria of waves, the nonlinear Schrodinger equation (NLSE) is derived. Analytical and numerical calculations of the NLSE show the variation of the stability region with different plasma parameters. This reveals that the stability criteria of EA waves depend on the modulation angle theta. The effect of the superthermal parameter kappa and electron temperature ratio sigma on the formation of EA wave envelope excitations is also discussed.
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收藏
页数：8
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