Investigations of the Thermoluminescence and EPR of mechanically activated and irradiated quartz

Thermoluminescence (TL) measurements are useful for a characterization of the state of order in mechanically activated quartz after X-ray and γ-irradiation. As the luminescence at room temperature (RT) the TL also decreases with decreasing crystallinity of the quartz. On the contrary, the concentrations of the EPR centers in quartz (E′, oxygen defect electron (ODE)) created by mechanical activation as well as irradiation increase with decreasing crystallinity. It is shown, that the electronic defects, which cause the TL, are different from the EPR centers.