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Dust ion acoustic waves in non‐thermal Cairns bi‐Maxwellian plasma
Author(s) -
ul Haq Rashid,
Hadi Fazli,
Ullah Zakir,
Ahmad Zeeshan,
Qamar Anisa
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.202000216
Subject(s) - landau damping , ion , plasma , physics , electron , dispersion relation , dusty plasma , thermal velocity , atomic physics , phase velocity , dispersion (optics) , thermal , plasma parameters , plasma parameter , acoustic wave , condensed matter physics , meteorology , quantum mechanics , mechanics , flow velocity , flow (mathematics)
Using kinetic theory approach, the dispersion relation ω r and Landau damping rate γ for dust ion acoustic waves are investigated numerically and analytically in an unmagnetized collisionless dusty plasma considering Cairns distribution for electrons and ions in stationary dust particles background. The phase velocity and Landau damping rate are calculated in the limits v td∥ < v ti∥ << ω / k << v te∥ . The electrons and ions non‐thermality effects are incorporated via the non‐thermality parameter (0 ≤ α < 1) . The real frequency ω r and Landau damping rate γ of the mode in Cairns bi‐Maxwellian distributed plasma are graphically shown to depend on plasma parameters namely non‐thermality index α , ion to electron temperature ratio T i∥ / T e∥ and the dust concentration parameter δ (=1 − ηZ d ) .