ON THE ERROR IN THE ACTIVATION-ENERGY OBTAINED BY THE INITIAL RISE METHOD FOR THERMALLY STIMULATED PROCESSES IN DIELECTRICS

TL glow curves were computer simulated for Randall-Wilkins, Garlick-Gi bson, May-Patridge and Adirovitch models in a range of activation ener gies (0.1 to 2.0 eV) which were afterwards recovered by the initial ri se method. The systematic error of the recovered energies is always th e same independent of the energy used in the simulated curves. It was found that there is no dependence of the error onto the heating rate a nd there is a dependence of error curves on the models used in compute r simulated TL emission. A correction factor can be plotted against th e percentage of the peak maxima used in the initial rise for each mode l and we could apply it even if more than 50% of the ascending part of the glow peak has to be considered.