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本文叙述了用斯托克巴格(Stockbarger)法制备CsI(Tl)晶体的过程和晶体的切割加工技术,分析了激活剂在晶体中的含量,研究了不同激活剂含量与晶体对Cs~(137)γ源和Po~(210)α源的光输出及能量分辨率的关系,测量了CsI(Tl)晶体在质子、氘核、α粒子激发下光输出与粒子能量的关系——能量响应。目前,我们所制得CsI(Tl)晶体的最好能量分辨率:对Cs~(137)γ源为9.8%(晶体大小为直径25毫米,高20毫米);对Po~(210)α源为2.9%(晶体大小为直径25毫米,厚1毫米)。所制得的最大晶体为直径40毫米,高50毫米。
In this paper, the process of preparing CsI (Tl) crystals by Stockbarger method and the crystal cutting technique are described. The content of activator in the crystals is analyzed. The effect of different activator contents on the crystal structure of Cs ~ ( The relationship between the light output and energy of CsI (Tl) crystal excited by proton, deuteron and α particle was measured by measuring the relationship between the energy output and the energy resolution of γ ~ source and Po ~ (210) α source. . At present, the best energy resolution of CsI (Tl) crystals is 9.8% (the diameter is 25 mm in diameter and 20 mm in height) for Cs ~ (137) γ source; 2.9% (crystal size 25 mm in diameter and 1 mm in thickness). The largest crystals produced were 40 mm in diameter and 50 mm in height.