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PIN型辐射探测器的并联使用 总被引:2,自引:0,他引:2
由于高能电子的穿透能力较强,需要采用较厚的探测器进行探测.在中巴合作资源卫星上的星内粒子探测器,以往采用的是锂漂移型探测器.由于锂漂移型探测器有噪声大、不稳定等弱点,我们在新一代仪器上采用了离子注入型PIN探测器.但是,PIN探测器厚度有限,因而采用并联方法.本文就PIN探测器的并联应用进行实验和分析,证明其可行性. 相似文献
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一、前言本文所指的缓发中子监测仪是探测燃料元件破损的仪器,探头为BF_3计数管,当燃料元件破损后,裂变产物所释放的缓发中子经慢化后成热中子,进入BF_3计数管产生~(10)B(n,α)~7Li反应。记录其脉冲,监督燃料元件的破损。 相似文献
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丁洪林 《核电子学与探测技术》1993,(1)
超导核辐射探测器已研究了40多年。现在已发展到这样的程度,对低温超导体核辐射探测器,1988年以来对~(55)Fe 5.9keV X射线FWHM已达到45eV,就77K温区的高Tc超导体核辐射探测器来说,经过短短三四年的努力,在实验上已观测到对核辐射的响应。随着高Tc超导体薄膜生长技术的不断改进,高Tc超导薄膜性能的不断提高, 并与半导体器件工艺的结合,在不久的将来会有重大的突破。 本文介绍超导体核辐射探测器的发展概况、工作原理,目前已达到的水平和它的应用前景。 相似文献
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本文详细推导并讨论了在各种实验条件下,高纯锗探测器的GeKα逃逸强度的计算公式。 相似文献
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Hyunsuk Lee Sooyoung Choi Kyoon-Ho Cha Kwangho Lee 《Journal of Nuclear Science and Technology》2013,50(5):660-669
A new calculational model of detector sensitivity, which is defined as the ratio of electric current to neutron flux, for self-powered neutron detector (SPND) is presented in this paper. Since Warren developed a sensitivity calculation model based on a multi-step analytic approach in 1972, there have been a lot of researches aimed at improving the accuracy of his model by partially employing Monte Carlo (MC) simulations in some of the calculation steps. However, there still exist assumptions such as mono-energy neutron in those models which could increase the uncertainty of the calculated detector sensitivity. In this paper, a new model which overcomes those limitations is developed by adopting the MC method more thoroughly and thereby reducing the number of calculation steps. The verification of the new method has been performed by comparing the results against the ones from the existing methods and measured data. A detailed analysis of SPND depletion by ORIGEN-S and BETA-S codes has shown that the proposed model can predict accurately the measured depletion data in a commercial pressurized water reactor (PWR) plant. 相似文献
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LaBr_3(Ce)与NaI(Tl)闪烁探测器的性能研究与比较 总被引:1,自引:0,他引:1
以铈离子激活的溴化澜晶体(La Br3:Ce3+)是近年来发现的一种新型无机闪烁体材料,因其具有较高的光产额、较好的能量分辨率、较快的衰减时间等优良性质,对溴化镧和碘化钠闪烁晶体进行了对比性实验研究,用137Cs、60Co等标准源在低本底铅室中测量了γ能谱。通过对比,重点讨论了La Br3(Ce)与Na I(Tl)闪烁探测器的能量分辨率和能量线性等性能指标。 相似文献