Skobeltsyn Institute of Nuclear Physics
Lomonosov Moscow State University

The results of the theoretical research of external force action on one of quantum generators – spin generator are given in this paper. It is shown, that if the field polarization of the external force is circular, spin generator is frequency locked on base tone only. If the field polarization of the external force is linear, spin generator is frequency locked on the base tone and on odd overtones. The frequency locking of spin generator on even overtones is absent. The modification of Arnold tongue form in locked spin generator was explained as the result of changing external force field polarization from circular to linear.