DERIVATION OF AN ACTIVATION-ENERGY SPECTRUM FOR DEFECT PROCESSES FROMISOTHERMAL MEASUREMENTS, USING A MINIMIZATION PRINCIPLE AND FOURIER-ANALYSIS

We present a method to calculate the activation energy spectrum (AES) for defect processes from isothermal data, based on a minimization pri nciple (smoothest possible spectrum compatible with the experimental d ata). This principle leads to a matrix relation, from which the AES ca n be calculated in a very simple way, if the relevant functions are Fo urier transformed. A window function suited to AES calculations is der ived. The method is tested for simulated and experimental data. It app ears to be rapid and flexible. In principle the number of input data c an be made very large, leading to a sharp energy resolution.