Temperature dependence of scintillation properties of SrMoO4
Temperature dependence of scintillation properties of SrMoO4
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DOI：
10.1016/j.nima.2015.04.018
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发表时间：
2015-08-21
影响因子：
1.4
通讯作者：
Panasyuk, M.
中科院分区：
文献类型：
--
作者：
Mikhailik, V. B.;Elyashevskyi, Yu.;Panasyuk, M.
研究了SrMoO_4晶体的X射线发光和闪烁特性随温度的变化关系。SrMoO 4的发光在室温下被淬灭，但低于T-200 K时，晶体表现出宽的发射带，最大波长为520 nm。这种发射归因于自陷激子的辐射衰变，而缺陷在低温下充当了激子的陷阱。这种复杂的辐射衰变特征反映在动力学中，其中包含几个组件加上在低温下延迟复合的贡献。研究了SrMoO 4闪烁光输出的温度依赖性。与在相同实验条件下测量的参考ZnWO 4晶体相比，发现SrMoO 4的光输出为15 ± 5%。因此，建议在低温稀有事件搜索中，作为闪烁体应用的钛酸锶有优化的余地。(C)2015 Elsevier B. V.版权所有。
Studies of the X-ray luminescence and scintillation properties of a SrMoO4 crystal as function of temperature down to T=10 K have been carried out. The luminescence in SrMoO4 is quenched at room temperature, but below T-200 K the crystal exhibits a broad emission band with a maximum at a wavelength of 520 nm. The emission is attributed to the radiative decay of self-trapped excitons and defects acting as traps for the exactions at low temperatures. Such complex character of radiative decay is reflected in the kinetics which contains several components plus a contribution from delayed recombination at low temperatures. The temperature dependence of scintillation light output of SrMoO4 was studied. Comparing with a reference ZnWO4 crystal measured under the same experimental conditions it was found that the light output of SrMoO4 is 15 +/- 5%. It is suggested, therefore, that there is scope for optimisation of strontium molybclate for application as scintillator in cryogenic rare event searches. (C) 2015 Elsevier B.V. All rights reserved.