Application of hexagonal boron nitride micropowder for thermoluminescent dosimetry of UV radiation |
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| Affiliation: | 1. School of Electrical and Computer Engineering, Georgia Institute of Technology, GT-Lorraine, 57070 Metz, France;2. UMI 2958, Georgia Tech-CNRS, 57070 Metz, France;3. Institut Pascal UMR 6602 CNRS, Université Blaise Pascal, 63171 Aubière, France;4. LPN CNRS, UPR20, 91460 Marcoussis, France;5. CentraleSupelec, LMOPS, EA4423, 57070 Metz, France;6. Université de Lorraine, LMOPS, EA 4423, 57070 Metz, France;7. Center for Compound Semiconductors and School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA;1. Federal University of Technology – Parana, Av. Desembargador Westphalen, 637 – Bloco N – Physics Academic Department, CEP 80010-110 Curitiba, PR, Brazil;2. Institute of Nuclear Physics Polish Academy of Sciences, Radzikowskiego 152, 31-342 Krakow, Poland;1. Soreq Nuclear Research Center, Yavne, 81800, Israel;2. Nuclear Engineering Unit, Ben Gurion University of the Negev, Beersheva, Israel;3. Physics Department, Ben Gurion University of the Negev, Beersheva, Israel;4. Physics Unit, Sami Shamoon College of Engineering, Beersheva, Israel;5. Nuclear Research Center Negev, Beersheva, Israel;1. Institute for Materials Research, Tohoku University, 2-1-1, Katahira, Aoba-ku, Sendai, Miyagi, 980-8577, Japan;2. New Industry Creation Hatchery Center (NICHe), Tohoku University, 6-6-10, Aramaki, Aoba, Aoba-ku, Sendai, Miyagi, 980-8579, Japan;3. Institute of Physics AS CR, 10 Cukrovarnicka, Prague 6, 16200 Czech Republic;4. C&A Corporation, 6-6-40, Aramaki, Aoba, Aoba-ku, Sendai, Miyagi, 980-8579, Japan |
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| Abstract: | Thermoluminescence (TL) response of h-BN micropowder, characterized by two peaks near 337 and 584 K, was studied in the 380-nm band after excitation with monochromatic ultraviolet radiation (UVR). On the basis of the obtained results and independent data analysis, assumptions were made on the mechanisms of donor–acceptor recombination with the participation of 1B, ON, and CN centers, responsible for the observed thermally activated emission. TL excitation spectra in the 200–380-nm range were analyzed. It was observed that the resolved maxima correspond quite to the characteristic wavelengths of 260 nm (maximum bactericidal efficiency) and 297 nm (maximum skin erythema). It is found that the dose dependence for an integral intensity of high-temperature peak is linear in the suberythemal range of 0.01–0.35 mJ/cm2. |
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| Keywords: | h-BN TL UVR dosimetry Oxygen and carbon impurity |
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