Abstract
Previous investigators have shown that the fading of coloration of gamma- irradiated phosphate glass can be represented by the formula mu (t) = Kt/sup - 0.067/, where mu (t) is the change in absorption coefficient of glass measured at t hours after short exposures and K is a constant of proportionality. A similar relation was found to hold for fading of coloration of ordinary window glass irradiated by Co/sup 60/ gamma rays. The formula mu (t) = Kt/sup - lambda /, lambda = exp(-A + BT), where A and B are constants dependent only on glass and wavelength and T denotes absolute temperature, gives very good agreement with observed data over wide temperature ranges. Comparisons of experimental data and calculated results are shown. (A.C.)
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