The total radical decay in γ-irradiated polyethylene, measured by EPR, is discussed. By using the model of broad distribution of reaction constants and by an improvement of the estimate of radical concentrations, it is proved that radical-generating reactions occur during the temperature increase after γ-irradiation. The number of total radicals produced that are generated during the temperature increase is of the same order of magnitude as the radicals initially produced by the γ-irradiation. Some arguments are summarized to support the applicability of the model of broad distribution.