P. Brovetto et al., THERMOLUMINESCENCE EXPERIMENTS TO STUDY LATTICE-DEFECTS IN ALUMINOSILICATES, Nuovo cimento della Societa italiana di fisica. D, Condensed matter,atomic, molecular and chemical physics, biophysics, 15(7), 1993, pp. 1017-1022
The thermolumineseent emissions of beta-eucryptite and beta-spodumene
have been recorded vs. temperature and wavelength. Arguments are advan
ced which allow the observed emission to be ascribed to point defects
originated by the exchange of Si+4 and Al+3 ions in (Si, Al)O4 tetrahe
dra.