Dusty Plasmas of Gas Mixtures

The data obtained in numerical calculations of characteristics of drift of ions and electrons in constant electric field in \textit{He-Kr} mixtures allowed us to make the analysis of the first experimental results on qualitative level. It follows: - first, at low concentration of \textit{Kr} anisotropy of interaction of dust particles, that is most strongly shown in the big difference of distances between particles in a chain and between chains at 1{\%} \textit{Kr} and low pressure, increases; this fact naturally associates with supersonic character of the ionic stream; - secondly, in \textit{He-Kr} mixtures even at very low concentration of \textit{Kr} (much less than 1{\%}) helium ions practically are not presented, also the characteristics of the ionic stream are caused by \textit{Kr} atoms; - thirdly, at a high pressure change of \textit{Kr} concentration influences more considerably on average distances between dust particles (distances between particles in chain are approximately equal to interchain distances); this fact can be connected with that circumstance that change of \textit{Kr} concentration influences on average electron energy more strongly because of the big energy inputs to \textit{He} excitation and almost total absence of its ionization.