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Spectroscopic analysis of the thermoluminescence glow curve of CaSO4:Dy phosphor by simplified general one-trap differential equation

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Abstract

Thermoluminescence (TL) glow curves of CaSO4:Dy phosphor were analyzed using a recently formulated simplified general one-trap (GOT) equation. The phosphor's activation energy (E) and frequency factor (s) were in the range of 1.014–1.421 eV and 109 to 1011 s−1, respectively. Furthermore, the analysis of the TL curve in the new simplified GOT equation provided information on the behavior of the empty traps and how they influence the retrapping process. The analysis of the TL curve in the simplified GOT equation shows that about 32–65% of the empty traps of the main dosimetric peak of CaSO4:Dy phosphor participate in the retrapping process, which is an essential requirement of a dosimetric peak. This vital information was missing in the previously reported TL analysis of the CaSO4:Dy phosphor.

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Acknowledgements

The authors are thankful to Dr B. Arunkumar Sharma, Radiotherapy Department, Regional Institute of Medical Science (RIMS), Imphal, for helping with gamma irradiation of the phosphors in their department and Dr L. Lovedy Singh, Manipur University, for the deconvolution of the TL curves and helpful suggestions.

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Authors and Affiliations

  1. Department of Physics, Manipur University, Canchipur, Manipur, 795003, India

    H. Nungshibabu Singh & N. Shitaljit Singh

  2. Department of Physics, Pole Star College, Wabagai, Manipur, 795103, India

    E. Gopal Singh

  3. Department of Physics, Nambol L. Sanoi College, Nambol, Manipur, 795134, India

    Th. Ranjan Singh

  4. Department of Physics, Oriental College, Takyel, Manipur, 795001, India

    S. Nabadwip Singh

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  1. H. Nungshibabu Singh
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  2. N. Shitaljit Singh
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  3. E. Gopal Singh
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  5. S. Nabadwip Singh
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Correspondence to S. Nabadwip Singh.

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Singh, H.N., Singh, N.S., Singh, E.G. et al. Spectroscopic analysis of the thermoluminescence glow curve of CaSO4:Dy phosphor by simplified general one-trap differential equation. Indian J Phys 97, 2817–2820 (2023). https://doi.org/10.1007/s12648-023-02629-8

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  • DOI: https://doi.org/10.1007/s12648-023-02629-8

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