Destruction of Doped Lithium Tetraborate under Exposure to Ionizing and Laser Radiation


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Abstract

The results of the study of the degradation of thermoluminescent materials Li2B4O7:Be + Mn and Li2B4O7: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 Mn2+ → Mn3+. It is shown that Li2B4O7:Be + Mn has a lower radiation resistance than Li2B4O7:Zn + Mn.

About the authors

Yu. G. Vainer

Institute of Spectroscopy, Russian Academy of Sciences; National Research University Higher School of Economics

Author for correspondence.
Email: vainer@isan.troitsk.ru
Russian Federation, TroitskMoscow, 108840; Moscow, 101000

N. Yu. Vereshchagina

Lebedev Physical Institute, Russian Academy of Sciences

Email: vainer@isan.troitsk.ru
Russian Federation, Moscow, 119991

M. I. Danilkin

Lebedev Physical Institute, Russian Academy of Sciences

Email: vainer@isan.troitsk.ru
Russian Federation, Moscow, 119991

V. M. Korshunov

Lebedev Physical Institute, Russian Academy of Sciences; Bauman Moscow State Technical University

Email: vainer@isan.troitsk.ru
Russian Federation, Moscow, 119991; Moscow, 105005

Yu. A. Repeev

Institute of Spectroscopy, Russian Academy of Sciences

Email: vainer@isan.troitsk.ru
Russian Federation, TroitskMoscow, 108840

A. S. Selyukov

Lebedev Physical Institute, Russian Academy of Sciences; Moscow Institute of Physics and Technology

Email: vainer@isan.troitsk.ru
Russian Federation, Moscow, 119991; Dolgoprudnyi, Moscow oblast, 141701

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