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塑料闪烁体—BaF2单探头β射线望远镜
A β ray telescope composed of plastic and BaF2 scintillators
【摘要】 制作了一个由薄片塑料闪烁体、ＢａＦ２晶体和光电倍增管组成的β射线探头．用２２Ｎａ放射源和９０Ｓｒ－９０Ｙβ源得到的试验结果表明，该探头可以较准确地记录β能谱，并能排除９７％以上的２２Ｎａγ射线干拢．用γ射线全能峰做能量刻度并考虑一常数值的系统误差修正可以方便地求出β射线端点能量．
【Abstract】 A β ray telescope has been made with a thin plastic scintillator, a thick BaF2 crystal and an RCA 8850 photomultiplier. Measurements of a 90Sr-90Y β ray source together with a 22Na γ ray source show that this telescope can record a fairly good β spectrum of 90Sr and reduce interference of γ rays from 22Na by more than 97%.
- 【文献出处】 核技术 ,NUCLEAR TECHNIQUES , 编辑部邮箱 ,1996年01期
- 【分类号】TH743
- 【下载频次】60