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Dusty plasmas; dust charging; Maxwellian distribution; two-temperature electron.

Dust charging in an unmagnetized collisionless dusty plasma with two-temperature electrons was investigated based on the orbital motion limited theory, where the two-temperature electrons and ions are modelled by the Maxwellian distributions. Then by taking into account the effects of two-temperature electron and the associated charging fluctuations, the dispersion peculiarities of dust-acoustic waves are studied based on dust fluid dynamics. The present results show that the effect will introduce a dissipation on the mode, and the dispersion and the dissipation depend on the temperature ratio and number density ratio of hot and cold electrons.

Zhong Xijuan¹ Chen Hui¹ Liu Nianhua¹ Liu Sanqiu¹

1. Department of Physics, Nanchang University, Nanchang 330047, China

Published

16 April 2016

Manuscript received

9 December 2014

Manuscript revised

10 March 2015

Accepted

11 March 2015

Early published

18 November 2015