Abstract
Lyoluminescence (LL) during the dissolution in HCl of calcite and aragonitic snail shells irradiated with 60Co ? rays was investigated. In the dose range of 100 to 3000 Gy the LL response of analytical grade calcite powder samples is sub-linear but shows no saturation. The influence of solvent concentration, temperature and of dissolved nitrogen on LL yield was studied. The traps responsible for LL are not stable under illumination. Annealing experiments indicate the existence of several different traps and the possibility of electron transfer between them.
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