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Effect of non‐extensivity parameter q on the damping rate of dust ion acoustic waves in non‐extensive dusty plasma
Author(s) -
Rehman Amanur,
Ahmad Mushtaq,
Hamza M.Y.
Publication year - 2019
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.201800038
Subject(s) - dusty plasma , ion , wavenumber , physics , dispersion relation , distribution function , electron , dispersion (optics) , atomic physics , range (aeronautics) , plasma , computational physics , condensed matter physics , materials science , optics , quantum mechanics , composite material
Kinetic theory has been applied to study the damping characteristics of dust ion acoustic waves (DIAWs) in a dusty plasma comprising q ‐non‐extensive distributed electrons and ions, while the dust particles are considered extensive following the Maxwellian velocity distribution function. It is found that the results of the three‐dimensional velocity distribution function are more accurate compared to the results of the one‐dimensional velocity distribution function. The numerical solution of the dispersion relation is carried out to study the effect of the non‐extensivity parameter q on the dispersion, the damping rate, and the range of the values of the normalized wavenumber ( k λ D ) for which the DIAWs are weakly damped. It is found that the change in the value of the electron non‐extensivity parameter q e has a minor effect on the dispersion, the damping rate, and the range of the values of the normalized wavenumber ( k λ D ) for which the DIAWs are weakly damped, while on the other hand, ion non‐extensivity parameter q i has a strong effect on these arguments. The effect of other parameters, such as the ratio of electron to ion number density and ratio of electron to ion temperature, on the damping characteristics of DIAWs is also highlighted.