References

nuc

Вестник НЯЦ РК

NNC RK Bulletin

1729-75161729-7885

Национальный ядерный центр Республики Казахстан

10.52676/1729-7885-2024-4-12-20

nuc-701

Research Article

Статьи

ОСОБЕННОСТИ ЛЮМИНЕСЦЕНЦИИ КРИСТАЛЛОВ CsI:Tl ОБЛУЧЕННЫХ БЫСТРЫМИ ИОНАМИ Xe

LUMINESCENCE FEATURES OF CsI:Tl CRYSTALS IRRADIATED WITH FAST Xe IONS

Акилбеков

А. Т.

Akilbekov

A. T.

Астана

Astana

Баубекова

Г. М.

Baubekova

G. M.

Астана

Astana

Асылбаев

Р. Н.

Asylbaev

R. N.

Павлодар

Pavlodar

Даулетбекова

А. К.

Dauletbekova

A. K.

Астана

Astana

Аралбаева

Г. М.

Aralbayeva

G. M.

Астана

Astana

agm_555@mail.ru

Карипбаев

Ж. Т.

Karipbayev

Zh. T.

Астана

Astana

Бурканова

К.

Burkanova

Астана

Astana

Евразийский национальный университет им. Л. Н. ГумилеваКазахстанL.N. Gumilyov Eurasian National UniversityKazakhstan

Маргулан университетКазахстанMargulan UniversityKazakhstan

2024

30122024

041220

2025

Акилбеков А.Т., Баубекова Г.М., Асылбаев Р.Н., Даулетбекова А.К., Аралбаева Г.М., Карипбаев Ж.Т., Бурканова К.

Akilbekov A.T., Baubekova G.M., Asylbaev R.N., Dauletbekova A.K., Aralbayeva G.M., Karipbayev Z.T., Burkanova K.

Данная работа распространяется под лицензией Creative Commons Attribution 4.0.

This work is licensed under a Creative Commons Attribution 4.0 License.

https://journals.nnc.kz/jour/article/view/701

Сцинтилляционные кристаллы CsI:Tl широко используются в экспериментах по ядерной физике и физике высоких энергий. В настоящей работе проведено исследование и анализ люминесцентных свойств кристаллов CsI:T1, вызванных облучением ионами 132Xe с энергией 230 МэВ, до флюенсов (1·1011–1·1014 ион/см2 ) при 295 К (ускоритель ДЦ-60, Астана, Казахстан). Исследование проводилось методами оптической абсорбционной и люминесцентной спектроскопии, также времени-разрешенной оптически стимулированной люминесценции. Поверхность исследовалась с помощью атомно-силовой микроскопии. Установлено уменьшение интенсивности сцинтилляционной полосы свечения 553 нм и ее светового выхода с увеличением флюенса. Конверсионная эффективность для исследованных образцов не зависит от флюенса. Таким образом радиационное повреждение не влияет на конверсионную эффективность кристалла CsI:Tl. Формирование треков не снижают конверсионную эффективность кристалла CsI:Tl, но участвуют в сцинтилляционном процессе, вызывая реабсорбцию энергии от Tl+ -центров, что приводит к деградации светового выхода.

Scintillation crystals CsI are widely used in nuclear physics and high-energy physics experiments. This work presents the study and analysis of luminescent properties of CsI:T1 crystals induced by irradiation with 230 MeV ¹³²Xe ions up to fluences (1·10¹¹–1·10¹⁴ ions/cm²) at 295 K (DC-60 accelerator, Astana, Kazakhstan). The research was conducted using optical absorption and luminescence spectroscopy methods, as well as time-resolved optically stimulated luminescence. The surface was studied using atomic force microscopy. A decrease in the intensity of the scintillation emission band at 553 nm and its light yield with increasing fluence was established. The conversion efficiency of the studied samples does not depend on fluence. Therefore, radiation damage does not affect the conversion efficiency of the CsI:Tl crystal. Track formation does not reduce the conversion efficiency of the CsI:Tl crystal but participates in the scintillation process through energy reabsorption from Tl⁺ centers, leading to light yield degradation.

монокристалл CsI:Tlсцинтилляционная люминесценцияионное облучениесветовой выходконверсионная эффективностьионные треки

CsI single crystalscintillation luminescenceion irradiationlight yieldconversion efficiencyion tracks

Данное исследование финансируется Комитетом науки Министерства науки и высшего образования Республики Казахстан (Грант № AP14870572).

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The authors declare that there are no conflicts of interest present.