  Analysis has been made on a possibility of phase separation and critical
point as a solution of fine particles in plasmas, extending the previous work
which pointed out this as one of two such possibilities. Fine particles are
treated as a solute in the solvent of weakly coupled plasmas of electrons and
ions. Examples of phase diagram have been obtained and coexisting phases are
shown to have fine particles which differ in densities by almost one order of
magnitude.
