Nature of radiation resistance of LFS oxyorthosilicate crystals doped with Ce, Sc, Ca, and Y ions


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Resumo

Optical and luminescence characteristics of Lu2+2ySi1-yO5+y (LFS) scintillation crystals are studied before and after irradiation with doses to 45 Mrad from a 60Co source. LFS crystals were doped with Ce3+, Sc3+, Ca2+, and Y3+ ions with various concentrations. The dependence of the radiation resistance of LFS crystals on Ce ion concentration is detected. For the crystal of composition Ce:Sc:Ca:Y:LFS, it was found that its optical transmission (OT) and pulsed cathodoluminescence (PCL) spectra before irradiation do not differ from the spectra measured after irradiation with a dose of 45 Mrad within experimental error. The nature of the radiation resistance of rare-earth lutetium oxyorthosilicates (LFS) is discussed.

Sobre autores

Yu. Zavartsev

Prokhorov General Physics Institute; Zecotek Imaging Systems Pte Ltd

Email: kozlov@sci.lebedev.ru
Rússia, ul. Vavilova 38, Moscow, 119991; Vancouver

M. Zavertyaev

Lebedev Physical Institute

Email: kozlov@sci.lebedev.ru
Rússia, Leninskii pr. 53, Moscow, 119991

A. Zagumenniy

Prokhorov General Physics Institute

Email: kozlov@sci.lebedev.ru
Rússia, ul. Vavilova 38, Moscow, 119991

A. Zerrouk

Zecotek Imaging Systems Pte Ltd

Email: kozlov@sci.lebedev.ru
Canadá, Vancouver

V. Kozlov

Lebedev Physical Institute

Autor responsável pela correspondência
Email: kozlov@sci.lebedev.ru
Rússia, Leninskii pr. 53, Moscow, 119991

S. Kutovoi

Prokhorov General Physics Institute

Email: kozlov@sci.lebedev.ru
Rússia, ul. Vavilova 38, Moscow, 119991

N. Pestovskii

Moscow Institute of Physics and Technology

Email: kozlov@sci.lebedev.ru
Rússia, Institutskii per. 9, Dolgoprudnyi, Moscow oblast, 141700

A. Petrov

Lebedev Physical Institute

Email: kozlov@sci.lebedev.ru
Rússia, Leninskii pr. 53, Moscow, 119991

S. Savinov

Lebedev Physical Institute

Email: kozlov@sci.lebedev.ru
Rússia, Leninskii pr. 53, Moscow, 119991

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