EFFECT OF X-RAY-IRRADIATION ON THE MAGNETOPLASTIC EFFECT IN NACL-CRYSTALS

A new method is proposed for investigating the effect of irradiation w ith x-rays on the spectrum of point defects in crystals. The method is based on studying the magnetoplastic effect in the irradiated crystal s. The main information is contained in the measurements of the averag e travel distance of dislocations as a function of the rotational freq uency of the sample in a magnetic field. Experimental studies of NaCl crystals demonstrated that the method is uniquely sensitive to small i rradiation doses (starting at 10(3) rad). It was found that the measur ed frequency dependences of the dislocation displacements respond to a change in the state of the existing impurity centers and to the produ ction of intrinsic radiation-induced defects. The kinetics of the rege neration of radiation-induced defects and metastable states of impurit y complexes as a result of illumination of the irradiated samples by a tungsten lamp for t(l) = 15-60 min was analyzed. (C) 1995 American In stitute of Physics.