Abstract

Propagations of non linear solitary waves in bi-dust plasma systems is analyzed. In the present treatment, one of the dust particles is assumed to be much smaller than other one, in such a way that there is enough time for this particle to reach quasi thermal equilibrium. Maxwell-Boltzmann factors are therefore applied for the density distribution of electrons, ions and light dust grains. The treatment of the problem can now be made by the method of the pseudo-potential taking into account temperature effects as function of the density of the heavy grain. In the limit where the light grain density tends to zero the effects found by other authors when only one kind of grains is re-obtained. Several numerical calculations for different values of the characteristic parameters will be shown.