Strongly coupled fine particles plasmas as solutions

Complete text of publication follows. Fine particles in fine particle (dusty, complex) plasmas easily become strongly coupled due to large negative charges accumulating on their surfaces. When the density of fine particles is low enough, they can be regarded as a solute in the solvent of ambient plasma composed of ions and electrons. Even in this case, the coupling between fine particles can still be kept in the state of strong coupling. When we analyze the thermodynamics of this solution, we find a possibility of phase separation and related critical point. Some examples of parameters are shown in Figs.1, 2, and 2. In this presentation, we further search for the physical parameters of fine particle plasmas which are appropriate to observe the above predictions in experiments. Our aim is at finding the relation of this property of the solution to sharp boundaries often observed in fine particle plasma experiments. The behaviour of the solution near the critical point will also be investigated especially from the point of view of application to chemical reactions.