The influence of gamma-ray irradiation on the electrical properties of thin
polycrystalline films of samarium monosulfide with various crystal-lattice
parameters was studied. The stability of the resistivity of films under an
exposure dose in the range of D = 10(8)-10(9) R is explained on the basis
of the existence of a channel for the relaxation of radiation-induced excit
ations; this channel is related to the presence of different-valence samari
um ions (Sm2+ and Sm3+). (C) 2000 MAIK "Nauka/Interperiodica".