ISOTHERMAL DECAY OF PEAK-4 IN LIF MG,CU,P

Experimental data on the isothermal decay associated with peak 4 of LiF:Mg, Cu, P are presented. The decay has been measured at various temperatures in the range 170-190 degrees C, presenting always the purely exponential variation of the light intensity with time typical of a first-order kinetics process. From the good linear dependence of the logarithm of the decay lifetime (In tau) with the inverse of the temperature (1/T), also typical of a first-order process, values for the activation energy and the frequency factor have been obtained for this peak. The isothermal decay features are discussed with regard to the results of Srivastava and Supe (1988) who claimed that peak 4 originated in two different groups of traps. © 1990 IOP Publishing Ltd.