Luminescence and scintillation properties of CsI: A potential cryogenic scintillator
Luminescence and scintillation properties of CsI: A potential cryogenic scintillator
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CsI 的发光和闪烁特性:一种潜在的低温闪烁体
DOI:
10.1002/pssb.201451464
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发表时间:
2015
期刊:
影响因子:
--
通讯作者:
Mikhailik V
中科院分区:
文献类型:
--
作者:
Mikhailik V
Caesium iodide is one of the most extensively studied scintillators. Here, we present X‐ray luminescence spectra, scintillation light output and decay curves as a function of temperature, from room temperature down to below 10 K. Features of the observed intrinsic luminescence are explained in terms of radiative recombination of on‐ and off‐center STE. A model permitting interpretation of the dynamics of luminescence changes in CsI with temperature is suggested. This model includes adiabatic potential energy surfaces (APES) associated with singlet and triplet states of self‐trapped excitons (STE) and explains the variation of the luminescence spectra with temperature as a result of re‐distribution in the population between on‐ and off‐center STE. The temperature dependence of the scintillation light yield is discussed in the framework of the Onsager mechanism.
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期刊:
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