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arXiv 1504.05489physics.ins-detnucl-ex
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SrMoO4闪烁性能的温度依赖性

Temperature dependence of scintillation properties of SrMoO4

V. B. Mikhailik, Yu. Elyashevskyi, H. Kraus, H. J. Kim, V. Kapustianyk, M. Panasyuk

摘要:

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的发光在室温下被猝灭,但在T<200 K以下,晶体呈现出宽的发射带,最大发射波长为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,它包含几个组件加上在低温下延迟复合的贡献。研究了SrMoO4闪烁光输出的温度依赖性。在相同的实验条件下,与ZnWO_4晶体比较,SrMoO_4晶体的光输出为15 ± 5%。因此,建议在低温稀有事件搜索中,锶闪烁体作为闪烁体的应用有优化的余地

英文摘要:

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 molybdate for application as scintillator in cryogenic rare event searches

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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