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This article is cited in 3 scientific papers (total in 3 papers)
All-Russian Scientific Conference "Modern Problems of Optics and Spectroscopy", Troitsk, Moscow, November 28-29, 2018
Optical materials
Destruction of doped lithium tetraborate under exposure to ionizing and laser radiation
Yu. G. Vainerab, N. Yu. Vereshchaginac, M. I. Danilkinc, V. M. Korshunovcd, Yu. A. Repeeva, A. S. Selyukovce a Institute of Spectroscopy, Russian Academy of Sciences, Troitsk, Moscow
b HSE University, Moscow
c P. N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow
d Bauman Moscow State Technical University
e Moscow Institute of Physics and Technology, Dolgoprudny, Moscow Region
Abstract:
The results of the study of the degradation of thermoluminescent materials Li$_{2}$B$_{4}$O$_{7}$ : Be + Mn and Li$_{2}$B$_{4}$O$_{7}$ : Zn + Mn under the effect of radiation (pulsed electron beam) and laser radiation are presented. As a result of exposure to high doses of radiation, the structure of the samples under study partially acquires an amorphous character, while the effect of radiation exposure is manifested in the optical properties in the appearance of green luminescence due to manganese centers in the tetrahedral environment. With subsequent irradiation with a laser at a wavelength of 350 nm, luminescence centers decay due to photochemical oxidation of manganese by the reaction of Mn$^{2+}$ $\to$ Mn$^{3+}$. It is shown that Li$_{2}$B$_{4}$O$_{7}$ : Be + Mn has a lower radiation resistance than Li$_{2}$B$_{4}$O$_{7}$ : Zn + Mn.
Keywords:
lithium tetraborate, thermoluminescence, radiation amorphization of the crystal structure, laser degradation of luminescence centers.
Received: 25.02.2019 Revised: 25.02.2019 Accepted: 15.03.2019
Citation:
Yu. G. Vainer, N. Yu. Vereshchagina, M. I. Danilkin, V. M. Korshunov, Yu. A. Repeev, A. S. Selyukov, “Destruction of doped lithium tetraborate under exposure to ionizing and laser radiation”, Optics and Spectroscopy, 127:1 (2019), 118–124; Optics and Spectroscopy, 127:1 (2019), 113–120
Linking options:
https://www.mathnet.ru/eng/os671 https://www.mathnet.ru/eng/os/v127/i1/p118
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