Abstract
Studies of the scintillation characteristics and optical properties of corundum crystals with various activating agents were carried out, on the basis of which crystals with optimal parameters were selected for the development and creation of single-crystal integral and matrix coordinate-sensitive broadband UV detectors in the range of 50–400 nm. Spectral measurements of their luminescence and absorption were carried out at certain frequencies of irradiation of corundum crystals with various dopants. The optimal compositions and concentrations of impurities were determined. The absorption spectra of some selected samples of corundum were also studied depending on the conditions of thermal annealing. Resonant lines corresponding to each particular alloying element are identified and separated. The role of dopants in the formation of the overall absorption spectrum is studied and the possibilities of forced formation of the desired absorption spectrum in the range of wavelengths of interest are evaluated.
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ACKNOWLEDGMENTS
We thank our colleagues from the RAGEA laboratory, Center for the Development of Natural Light Emission (CANDLE) and Institute of Physical Chemistry, as well as Institute of Applied Problems of Physics of the National Academy of Sciences of the Republic of Armenia, who gave us the opportunity to use their experimental bases for this work.
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Translated by V.M. Aroutiounian
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Mkhitaryan, S.A., Vardanyan, J.G., Agadzhanyan, G.S. et al. Investigation and Selection of Corundum Crystals with Various Activated Agents for the Creation of UV Detectors of 50–400 nm Wavelengths. J. Contemp. Phys. 57, 289–296 (2022). https://doi.org/10.1134/S1068337222030112
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DOI: https://doi.org/10.1134/S1068337222030112