Equilibrium distribution functions for plasma-molecular layers

Abstract

The equilibrium distribution functions of free charged particles and those bound in molecules are calculated for a plasma-molecular system restricted by two parallel planes, taking into account all terms of the multipole expansion of the molecular fields. These distributions are used to find the inhomogeneous densities of free charged and neutral particles, the average molecular dipole moments and the total dipole moment of the system. In the case where particles approach the boundary of the system, the expressions obtained can diverge. The removal of the divergences is discussed. For a molecular subsystem modulated by rigidity coupled pairs of charged particles or an ensemble of harmonic atomic oscillators, the equilibrium distributions are investigated in the dipole approximation. The molecules contained in a purely molecular system or a plasmamolecular system with a hydrogen-like plasma subsystem are shown to have zero average dipole moments. For such systems the non-zero average dipole moments of mole...