The effect of high alpha particle fluences (3 x 10(13) -2 x 10(15) cm(-2))
on properties of the two types of phosphate glass detectors with different
compositions was studied. It was shown that the registration properties of
glass detectors depended on the alpha particle fluence, spatial distributio
n of the alpha particle paths, and glass type. The critical alpha particle
fluences, above which the detector properties changed, were determined.