TY - JOUR T1 - Investigation of Dust-Ion-Acoustic Waves in Dusty Plasmas with Variable Dust Charge by Kinetic theory TT - بررسی امواج یون-غبار-صوت توسط نظریه‌ی جنبشی در پلاسمای غباری با بار متغیر غبار JF - opsi JO - opsi VL - 20 IS - 0 UR - http://opsi.ir/article-1-301-en.html Y1 - 2014 SP - 709 EP - 712 KW - Dust Charge Fluctuation KW - Dust-Ion-Acoustic waves KW - kinetic theory N2 - Abstract- In this paper, the instability of Dust-Ion-Acoustic waves in the presence of the dust charge fluctuations in a collisionless unmagnetized dusty plasmas is investigated by kinetic theory. We consider Maxwellian distribution for plasma particles in the equilibrium and negatively charged dust grains. It is shown that dust-ion-acoustic wave instability can exist even if the drift speeds of the plasma particles are equal to zero. The results of kinetic theory are compared with those of fluid theory. M3 ER -