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Dust-ion Acoustic Shock Waves in a Dusty Multi-ion Plasma with Negatively Dust-charge Fluctuation
Hongyan Wang,Kaibiao Zhang 한국물리학회 2015 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.66 No.2
The nonlinear propagation of dust-ion acoustic shock waves in a collisionless, unmagnetizedmulti-ion dusty plasma contains Botlzemann-distributed electrons, negative and positive ions withextremely massive and stationary negative charge dust grains with dust charge fluctuations is investigated. By employing the reductive perturbation method, we obtain a Burgers equation thatdescribes the two-ion fluid dynamics. The dust charge variation is found to play an important rolein the formation of such dust-ion acoustic shock structures. The viscosity only affects the thicknessof the shock waves. The dependences of the shock wave’s velocity, height and thickness on thesystem parameters are investigated.