The thermoluminescence (TSL) of lithium- and sodium-swept quartz crystals

The TSL in Li-containing and in Na-swept quartz is described. The glow curves change drastically with the pretreatment of the sample. Thus a double X-irradiation at low temperature and warming to about 250 K between the two irradiations produces very strong new TSL peaks at 190 K for Li-containing samples and at 202 K for Na-containing ones. Other treatments, e.g., prolonged preirradiation at RT, cause the 190 K and 202 K to disappear when other TSL peaks are formed and dominate the glow peaks. The effects are discussed and models for the defects involved and the processes responsible for the observed effects are suggested. The low-temperature phosphorescence accompanying the TSL is briefly described.<>