Results of the investigation of the kinetics of radiation chemical conversion of separate LTNR crystals are presented. A number of unusual phenomena were discovered including the formation of an oscillatory structure on some intermediate products, one of which changes into a final gaseous product when dissolving the irradiated crystal. It is established that this intermediate concentration is distributed in the crystal core as the inverse square of the distance from the crystal axis. Some physical factors were supposed to have an effect on these processes. A great number of characteristic features indirectly testify to the existence of the domain structure in LTNR crystals.