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Multi‐dimensional instability of electrostatic solitary waves in a warm multi‐ion dust plasma
Author(s) -
Gao DongNing,
Wu JianPeng,
Duan WenShan
Publication year - 2021
Publication title -
contributions to plasma physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0863-1042
DOI - 10.1002/ctpp.202100010
Subject(s) - physics , instability , plasma , ion , dusty plasma , magnetic field , perturbation (astronomy) , atomic physics , electron , direction cosine , nonlinear system , plasma parameters , astrophysical plasma , mechanics , quantum mechanics , geometry , mathematics
Study of dust ion acoustic waves in a magnetized dusty plasmas composed of negatively or positively charged static dust, positive and negative ions, as well as kappa distribution electrons is presented. The Zakharov–Kuznetsov (ZK) equation is derived via reductive perturbation technique. The solitary wave solution of ZK equation is given and the multi‐dimensional instability of these solitary waves is investigated via small k perturbation method. The instability criterion and growth rate relying on obliqueness, superthermality, positive ion thermal pressure, relative ion number density, magnetic field strength, and direction cosines are discussed for five cases. The results are beneficial to understand different nonlinear characteristics of unstable electrostatic disturbances in laboratory and space plasmas.