Abstract
In this study, we developed a cryogenic thermoluminescence (TL) measurement system and evaluated its performance. A graphical user interface-based data acquisition software is programmed to control the whole system, which includes the thermostat, photomultiplier tube, and counter. To test the measurement system, we use Na2W2O7 (NWO) crystal. The NWO crystal was grown with a conventional Czochralski system. At room temperature (300 K), a broadband emission spectra of the crystal was obtained in the range of 340–790 nm under the excitation of a 280 nm light emitting diode (LED) source. The glow curves of NWO crystals were measured from 9 to 300 K with the cryogenic TL measurement system developed in this study. Six glow peaks at 23, 35, 110, 143, 178, and 231 K were observed from 9 to 300 K. The measured glow curves were analyzed by computerized glow curve deconvolution technique. The activation energy, order of kinetics, frequency factor, and figure of merit (FOM) for each peak were obtained. The calculated FOMs for all glow peaks were found to be less than 4%, which confirmed that the developed cryogenic TL measurement system works well.
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Acknowledgements
This research was supported by the National Research Foundation of Korea (NRF No-2018R1A6A1A06024970)
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Cheon, Jk., Kim, S., Pandey, I. et al. Development of cryogenic thermoluminescence measurement system and performance test on Na2W2O7 single crystal. J. Korean Phys. Soc. 81, 733–738 (2022). https://doi.org/10.1007/s40042-022-00583-y
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DOI: https://doi.org/10.1007/s40042-022-00583-y