Performance study of GAGG:Ce scintillator for gamma and neutron detection
Performance study of GAGG:Ce scintillator for gamma and neutron detection
复制标题
GAGG:Ce闪烁体用于伽马和中子探测的性能研究
DOI：
10.1088/1748-0221/15/06/c06031
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发表时间：
2020-06-01
影响因子：
1.3
通讯作者：
Zhang, Z.
中科院分区：
文献类型：
--
作者：
Wang, Z.;Guo, H.;Zhang, Z.
高密度、高光输出的无机闪烁体广泛应用于高能物理、空间探索、现代医学成像和工业等领域的电离辐射探测。近年来研制的掺铈Gd3Al2Ga3O12 （GAGG:Ce）晶体具有密度高、光产率高、闪烁衰减时间快、不吸湿等优点，是一种很有前途的用于量热的闪烁体。此外，Gd同位素具有非常高的热中子捕获截面，使得GAGG:Ce晶体对中子探测非常敏感。本文对基于GAGG:Ce闪烁体的伽马和中子探测性能进行了详细的研究。研究了单晶和陶瓷GAGG:Ce的闪烁特性。由于具有非常高的光产率，转换电子和低能x射线产生的光峰被成功地观察到，并可用于中子/伽马鉴别。
Inorganic scintillators with high density and high light output are widely used for the detection of ionizing radiation in high energy physics, space exploration, modern medical imaging and industry. Recently developed cerium-doped Gd3Al2Ga3O12 (GAGG:Ce) crystal is a promising scintillator with high density, high light yield, fast scintillation decay time and non-hygroscopicity used for calorimetry. Furthermore, the presence of Gd isotopes with a very high thermal neutron capture cross section makes the GAGG:Ce crystal efficiently sensitive for neutron detection. In this manuscript, performance of gamma and neutron detection based on GAGG:Ce scintillator has been studied carefully. Scintillation properties of Single crystal and ceramic GAGG:Ce were investigated. Thanks to very high light yield, the photopeaks due to conversion electrons and low energy X-ray are successfully observed and can be used to do the neutron/gamma discrimination.