Space applications of GAGG:Ce scintillators: a study of afterglow emission by proton irradiation
Space applications of GAGG:Ce scintillators: a study of afterglow emission by proton irradiation
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DOI：
10.1016/j.nimb.2021.12.006
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发表时间：
2022-01-10
影响因子：
1.3
通讯作者：
Vacchi, Andrea
中科院分区：
文献类型：
--
作者：
Dilillo, Giuseppe;Zampa, Nicola;Vacchi, Andrea
我们讨论的质子辐照活动的GAGG：Ce（铈掺杂的钆铝镓石榴石）闪烁晶体的结果，进行了HERMES-TP/SP（高能快速模块化的宇宙飞船-技术和科学的探路者）使命的框架。用70 MeV质子辐照闪烁体样品，其水平相当于在6个月至10年的轨道周期内在赤道和太阳同步低地球轨道上预期的水平。我们所获得的数据被用来介绍一个原始的GAGG：Ce余辉发射模型。从这个模型的结果被应用到HERMES-TP/SP的情况下，针对余辉发射造成的探测器性能下降的上限估计。
We discuss the results of a proton irradiation campaign of a GAGG:Ce (Cerium-doped Gadolinium Aluminum Gallium Garnet) scintillation crystal, carried out in the framework of the HERMES-TP/SP (High Energy Rapid Modular Ensemble of Satellites - Technological and Scientific Pathfinder) mission. A scintillator sample was irradiated with 70 MeV protons, at levels equivalent to those expected in equatorial and sun-synchronous low Earth orbits over orbital periods spanning 6 months to 10 years. The data we acquired are used to introduce an original model of GAGG:Ce afterglow emission. Results from this model are applied to the HERMES-TP/SP scenario, aiming at an upper-bound estimate of the detector performance degradation resulting from afterglow emission.