RADIATION FORCES AND NONSPHERICAL DUST PARTICLES

Action of electromagnetic radiation on nonspherical dust particles is discussed. It is stressed that the radiation pressure coefficient Q(PR ) cannot be considered to be a scalar quantity, as it is used in all c alculations for dynamical studies of interplanetary dust particles. Al so the equation [Q(PR)A] = [Q(PR)][A] (A - area of the particle) holds only for perfectly absorbing convex dust particle (Q(PR) = 1) and not even one of these two properties holds for interplanetary dust partic les. Plane mirror is discussed in detail - all calculations can be don e in this simple case.