Spectral and luminescent characteristics of organic scintillators UPS-923A irradiated with ionizing radiation

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The effect of gamma and electron irradiation on optical and IR absorption, as well as on photoluminescence of samples with a PS polystyrene base and pTP and POPOP additives, has been studied. A decrease in the luminescence intensity of irradiated samples in the ranges of 300–380 nm and 380–500 nm was found, which correlates with changes in the IR absorption spectra of the samples, which is due to the degradation of the structure of the aromatic benzene ring in the matrix of the polymer base and the destruction of additives.

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作者简介

Sh. Irisov

Institute of Nuclear Physics, Academy of Sciences of Uzbekistan

编辑信件的主要联系方式.
Email: izzatilloh@yahoo.com
乌兹别克斯坦, Tashkent

I. Nuritdinov

Institute of Nuclear Physics, Academy of Sciences of Uzbekistan

Email: izzatilloh@yahoo.com
乌兹别克斯坦, Tashkent

K. Saidahmedov

Institute of Nuclear Physics, Academy of Sciences of Uzbekistan

Email: izzatilloh@yahoo.com
乌兹别克斯坦, Tashkent

Z. Esanov

Institute of Nuclear Physics, Academy of Sciences of Uzbekistan

Email: esanov@inp.uz
乌兹别克斯坦, Tashkent

B. Yuldashev

Institute of Nuclear Physics, Academy of Sciences of Uzbekistan

Email: esanov@inp.uz

Foreign Member of the RAS, Academician of the AS RUz

乌兹别克斯坦, Tashkent

参考

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2. Fig. 1. Absorption spectra of the initial (1) and irradiated with electrons 1 × 1015 cm–2 (2) and gamma rays at a dose of 107 rad (3) UPS samples (a); difference spectra (b) for 2 and 1 (4), 3 and 1 (5).

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3. Fig. 2. PL spectra excited in the band of 300 nm (a) and 350 nm (b) of the initial (1) electron irradiated with a fluence of 1016 e/cm2 (2) and gamma irradiated with a dose of 107 rad (3).

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4. Fig. 3. Normalized photoluminescence spectra excited at the bands of 300 nm (a) and 350 nm (b) of the initial (1) electron irradiated with a fluence of 1016 e/cm2 (2) and gamma irradiated with a dose of 107 rad (3).

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5. Fig. 4. IR spectra of the initial (1), gamma-irradiated with a dose of 107 rad (2) and electron-irradiated with a fluence of 1016 e/cm2 (3) samples of UPS – 923A (a); differences in spectra 2 and 1 (4), 3 and 1 (5) (b).

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