Ultraviolet radiation detector based on artificial periclase nanocrystals (MgO)
M.P. Tentyukov1,2, V.P. Lyutoyev3, B.D. Belan1, D.V. Simonenkov1, O.S. Golovataya2
1V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, Tomsk, Russia
2Pitirim Sorokin Syktyvkar state University, Syktyvkar, Russia
3Institute of Geology named after Academician N.P. Yushkin of Komi Science center of UB RAS, Syktyvkar, Russia
Keywords: ultraviolet radiation, electron paramagnetic resonance method, magnesium oxide, ultraviolet radiation detector, monitoring, Arctic, snow cover
Abstract
A method of ultraviolet radiation dosimetry based on recording the photostimulated transition Mn3+ + e– → Мn2+ in ultrafine MgO with a periclase crystal structure is described. The observed effect is associated with the photosensitivity of transition metal impurity ions. The intensity of the electron paramagnetic resonance (EPR) signal of Mn2+ ions can be used as a measure of change in the valence state of Mn impurity ions in MgO lattice. The possibility of recording a photostimulated transition by the EPR is proposed to be used in the development of a passive integrating ultraviolet detector (UV detector). The applicability of the new UV detector for assessing the ultraviolet transparency of snow cover is shown. The possibility of its use for monitoring the ultraviolet radiation on the Earth's surface in the framework of studies of the stability of tundra ecosystems in the conditions of depletion of the stratospheric ozone layer in the Arctic is discussed.
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