Radiation-induced color centers with new properties in lithium fluoride crystals subjected to thermal shocks or compression

Войтович, А. П.; Игнатенко, О. В.; Калинов, В. С.; Kostik, O. E.; Mashko, V. V.; Новиков, А. Н.

doi:10.1080/10420150.2021.1878520

Cited by 6 publications

(4 citation statements)

References 17 publications

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“…Despite the fact that color centers in LiF and their photoluminescence have been studied for decades, these subjects still attract a great deal of scientific interest, wherein the objective is the acquirement of a better understanding of various effects and the development of new applications [ 2 , 3 , 4 , 5 , 6 , 7 ]. Radiation-induced photoluminescence offers wide applicational opportunities for the detection, dosimetry, and imaging of ionizing radiation [ 8 , 9 , 10 , 11 , 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

Influence of Elevated Temperature on Color Centers in LiF Crystals and Their Photoluminescence

et al. 2023

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The radiation-induced photoluminescence (PL) of LiF has found its way into many applications for the detection and imaging of ionizing radiation. In this work, the influence of thermal treatment at temperatures up to 400 °C on absorption and PL emission spectra as well as fluorescent nuclear tracks in irradiated LiF crystals was investigated. It was found that carrying out PL measurements with the crystals kept at the temperature of about 80 °C leads to a considerable increase in luminescence emission of F3+ color centers at 525 nm. This enhancement of PL intensity allows for the microscopic imaging of the fluorescent nuclear tracks using only F3+ emission, which is not possible at room temperature. It was also found that heating the irradiated crystals before measurement at temperatures from 100 °C to 200 °C increases the concentration of F3+ centers. However, the related enhancement of PL emission is insufficient in terms of enabling the observation of the fluorescent tracks in this part of the spectrum. In the case of the main PL emission at 670 nm related to F2 centers, the thermal treatment at around 290 °C substantially increases the intensity of fluorescent tracks. This effect, however, was found to occur only at low fluences of alpha particles (up to about 109 cm−2); therefore, it is barely visible in the emission spectrum and not noticeable in the absorption spectrum.

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Section: Introductionmentioning

confidence: 99%

Influence of Elevated Temperature on Color Centers in LiF Crystals and Their Photoluminescence

et al. 2023

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“…LiF is used as an X‐ray detector 37–40 and has the properties of a film‐based laser optical material 41,42 . In this work, we consider the experimental and theoretical results of studies of the formation of defects on the surface of LiF thin films under irradiation with ions using various techniques.…”

Section: Introductionmentioning

confidence: 99%

“…LiF is used as an X-ray detector [37][38][39][40] and has the properties of a film-based laser optical material. 41,42 In this work, we consider the experimental and theoretical results of studies of the formation of defects on the surface of LiF thin films under irradiation with ions using various techniques. The measurements were carried out in LiF crystal grown on a Si(111) single crystal under irradiation with ions of different masses after the film was deposited.…”

Section: Introductionmentioning

confidence: 99%

Influence of the irradiation of ions of different mass on the formation of surface defects of lithium fluoride thin films

Sharopov

Kaur

Kurbanov

et al. 2022

Surface & Interface Analysis

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We explore the experimental and simulation results of the formation of defects on the surface of lithium fluoride thin films under irradiation with different mass ions using total current (TC) spectroscopy, secondary ion mass spectroscopy (SIMS), and the Stopping and Range of Ions in Matter (SRIM) software package. A comparative study was carried out with ions of different masses, and inconsistencies in the occurring physical phenomena between our early concepts were found. It is shown that in the case of heavy ions irradiation, they are implanted and appear as substitutional atoms into the bulk of the crystal. For ions with the smallest ion mass, the distribution of interstitial defects is greater on the surface than in the bulk of the crystal. An attempt is made to explain the formation of some defects on the surface (formed peaks in the TC spectra) by the method of computer simulation.

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“…LiF используется в качестве детекторов рентгеновского излучения [27][28][29][30], также обладает свойствами лазерного оптического материала на основе пленок [31][32]. В настоящей работе рассмотрены результаты исследований образования дефектов на поверхности кристаллов LiF при облучении ионами с использованием различных методик.…”

Section: Introductionunclassified

Исследование образования дефектов на поверхности кристаллов LiF при бомбардировке ионами цезия

Шаропов¹

2022

УФЖ

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В настоящей работе рассмотрены экспериментальные результаты по исследованию образования дефектов на поверхности кристаллов LiF при облучении ионами с использованием методик спектроскопии полного тока (ПТ), вторично-ионной масс-спектрометрии (ВИМС) и программного комплекса SRIM. Проведенные исследования на кристалле LiF при ионном облучении показали, что работает ударный механизм образования дефектов, при этом наблюдается последовательное образование кластерных центров до их коалесценции в коллоидные центры. При ионном облучении наблюдается фазовый переход поверхности кристалла LiF с образованием коллоидных центров с последующей металлизацией поверхности, а также скоплением кластеров нейтральных атомов фтора (пузырьков). Показано, что при облучении ионами образуется большая концентрация вакансий и междоузельных дефектов на поверхности и в объеме кристалла.

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Radiation-induced color centers with new properties in lithium fluoride crystals subjected to thermal shocks or compression

Cited by 6 publications

References 17 publications

Influence of Elevated Temperature on Color Centers in LiF Crystals and Their Photoluminescence

Influence of Elevated Temperature on Color Centers in LiF Crystals and Their Photoluminescence

Influence of the irradiation of ions of different mass on the formation of surface defects of lithium fluoride thin films

Исследование образования дефектов на поверхности кристаллов LiF при бомбардировке ионами цезия

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