非氟卤化物闪烁晶体的研究现状和发展趋势

本文根据化学组成的特点将非氟卤化物闪烁晶体划分为AX、MX、RX3、AMX3、A2MX4、A4MX6、AM2X5、ARX4、A2RX5、A2A′RX6、A3RX6、A2TX6型等,其中A、M、R和T分别代表+1价、+2价、+3价和+4价的金属元素,X代表除氟以外的卤族元素,A′表示与A不同的+1价金属元素。着重介绍了其中光输出高于40000 ph/MeV的γ射线探测用闪烁晶体以及光输出高于20000 ph/MeV的中子和γ射线双探测用闪烁晶体,并对它们的研究现状和发展趋势进行了简要评述。

Research Status and Development Trend of Non-fluorinated Halide Scintillation Crystals

The non-fluorinated halide scintillation crystals are divided into AX,MX,RX3,AMX3,A2MX4,A4MX6,AM2X5,ARX4,A2RX5,A2A′RX6,A3RX6,A2TX6 and so on according to the chemical composition characteristics,where A,M,R and T represent metal elements with the valence of+1,+2,+3 and+4,respectively;X for halogen elements except fluorine,and A′for+1 valent metal element different from A.The non-fluorinated halide scintillation crystals with light output of more than 40000 ph/MeV forγ-ray detection,and those of more than 20000 ph/MeV for both thermal neutron andγ-ray detection are emphatically introduced,and their research status and development trend are briefly reviewed.