Thermoluminescence studies on PbO–Sb2O3–As2O3 glasses doped with iron ions

Thermoluminescence (TL) studies on PbO–Sb2O3–As2O3 glasses doped with different concentrations (0–1.0 mol%) of Fe2O3 have been carried out. The TL light output has been observed to decrease with increase in the concentration of Fe2O3 up to 0.6 mol%. For further increase in the content of Fe2O3, the TL light output has been observed to increase. Results of these studies (coupled with data on optical absorption, ESR and magnetic susceptibility measurements) have been analyzed in the light of different oxidation states of iron ions.