Thermoluminescence studies of nanoparticle and bulk NaMgF_{3:Mn

Thermoluminescence and photoluminescence are observed in nanoparticle and bulk NaMgF 3 :Mn 2+ samples. The activation energies for the two main peaks in the TL data are similar for nanoparticle and bulk samples and they are nearly independent of Mn 2+ concentration. The similar trap depths suggest that they could arise from similar point defects. They also have one identified deep trap but the activation energy is significantly larger for the bulk samples. The bulk samples also have higher temperature TL peaks above 630 K. Our results show that NaMgF 3 :Mn 2+ can potentially be used as a personal TL dosimeter.