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Abstract
We investigate the thermoluminescence (TL) properties of nanocrystalline Li2B4O7:Dy. The TL properties of the said phosphor are of great interest as it has an effective atomic number close to that of a biological tissue. The phosphor is synthesized by combustion method and characterized by X-ray diffraction and transmission electron microscopy. When the nanophosphor is exposed to a range of gamma doses using cobalt-60, it exhibits a linear TL response for an extensive range of doses. Further, the reproducibility and batch homogeneity properties are also studied. In conclusion, nanocrystalline Li2B4O7:Dy shows potential as a radiation dosimeter of gamma rays.
Acknowledgments and funding
The authors are grateful to Dr. D. Kanjilal, Director, Inter-University Accelerator Centre (IUAC), New Delhi (project BTR No. 57301 dated 6/1/2015) for providing funds and research facilities to carry out the present work. The authors are also thankful to Mr. D. Sen, Scientist, Health Physics Lab, IUAC for providing infrastructural support.