| 球载大面积Phoswich能量分辨率研究 |
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| 引用本文： | 李延国,王治强,徐永忠,杨家伟,吴伯冰,吴枚,陆柱国,李惕碚.球载大面积Phoswich能量分辨率研究[J].核电子学与探测技术,1999,19(4):252-255. |
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| 作者姓名： | 李延国 王治强 徐永忠 杨家伟 吴伯冰 吴枚 陆柱国 李惕碚 |
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| 作者单位： | 中国科学院高能物理研究所,北京,100039 |
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| 摘 要： | 对混合型球载硬Ｘ射线天文望远镜（ＨＡＰＩ－４）ＰｈｏｓｗｉｃｈＮａＩ（Ｔｌ）／ＣｓＩ（Ｎａ）探测器的能量分辨率进行了研究。实测表明，光电倍增管光阴极面响应的非均匀性与入射光谱有关，用蓝色滤光片所测非均匀性小于２０％，采用对晶体窗玻璃进行罩膜处理，改变荧光收集条件，以牺牲幅度换取均匀性能量分辨率的改善效果是十分明显的，可将Ｐｈｏｓｗｉｃｈ探测器能量分辨从４５％（６０ｋｅＶ）提高到２４％，此外，对几种
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| 关 键 词： | 硬X射线 Phoswich探测器 能量分辨率 |
| 修稿时间： | :1998-04-1 |
Research in the Energy Resolution ofBalloon-Borne Large Area Phoswich Detectors |
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| Li Yanguo,Wang Zhiqiang,Xu Yongzhong,Yang Jiawei,Wu Bobing,Wu Mei,Lu Zhuguo,Li Tibei.Research in the Energy Resolution ofBalloon-Borne Large Area Phoswich Detectors[J].Nuclear Electronics & Detection Technology,1999,19(4):252-255. |
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| Authors: | Li Yanguo Wang Zhiqiang Xu Yongzhong Yang Jiawei Wu Bobing Wu Mei Lu Zhuguo Li Tibei |
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| Abstract: | We have done some
researches in the energy resolution of Phoswich (NaI(Tl)/CsI(Na)) detectors, a main instrument of
HAPI 4 Balloon borne Hybrid Hard X ray Astronomy Telescope. It shows that the non uniformity
of PMT photocathode response depends on the incident spectra. It's obvious to improve the
energy resolution from 45% to 24% ( 60 keV) by using special masks at the expense of reducing
the signal amplitude. |
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| Keywords: | Hard X ray Phoswich detector Energy resolution |
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