Open AccessРазрушение легированного тетрабората лития под воздействием радиации и лазерного излучения
Author(s) -
Ю.Г. Вайнер,
Н.Ю. Верещагина,
М.И. Данилкин,
В.М. Коршунов,
Ю.А. Репеев,
А.С. Селюков
Publication year - 2019
Publication title -
žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-748X
pISSN - 0044-4642
DOI - 10.21883/os.2019.07.47938.109-19
Subject(s) - manganese , thermoluminescence , irradiation , radiation , luminescence , materials science , laser , wavelength , photochemistry , radiochemistry , chemistry , optics , optoelectronics , metallurgy , physics , nuclear physics
The results of the study of the degradation of thermoluminescent materials Li_2B_4O_7:Be + Mn and Li_2B_4O_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+ → Mn^3+. It is shown that Li_2B_4O_7:Be + Mn has a lower radiation resistance than Li_2B_4O_7:Zn + Mn.