Hybrid-3Hen - New Detector for Gammas and Neutrons
Hybrid-3Hen - New Detector for Gammas and Neutrons
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Hybrid-3Hen - 新型伽马和中子探测器
DOI：
10.5506/aphyspolb.45.217
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发表时间：
2014
影响因子：
0.5
通讯作者：
E. Zganjar
中科院分区：
文献类型：
--
作者：
R. Grzywacz;K. Rykaczewski;C. Gross;M. Madurga;K. Miernik;D. Miller;S. Paulauskas;S. Padgett;C. Rasco;M. Wolińska;E. Zganjar
最近，构建了一种独特的β延迟中子谱复制探测器系统Hybrid-3Hen，并在实验中使用。该探测器是中子探测器 3Hen 阵列的改进型，它使用 10 atm 的 \mbox{$^3$He-filled} 管和高密度聚乙烯慢化剂。在 Hybrid-3Hen 中，伽马射线探测能力是通过从 CLARION/CARDS 阵列添加两个大型 HPGe 三叶草型探测器来实现的。对 3Hen 的这种修改使得能够利用中子-伽马巧合来有效地研究 β 延迟中子发射。系统配备全数字读数，方便实现整个检测系统各部分之间的慢速和快速重合。这种新阵列用于霍利菲尔德放射性离子束设施的测量，并被证明是测量奇异同位素 $^{86}$Ga 的大β延迟两个中子发射分支比的重要工具。
Recently, a unique detector system for beta-delayed neutron spectros\-copy, Hybrid-3Hen, was constructed and used in an experiment. This detector is a modification of the neutron detector 3Hen array, which uses \mbox{$^3$He-filled} tubes at 10 atm and high density polyethylene moderator. In Hybrid-3Hen the gamma-ray detection capability was implemented by\break adding two large HPGe clover-type detectors from the CLARION/CARDS array. This modification of 3Hen enabled efficient studies of beta-delayed neutron emission by using neutron--gamma coincidences. The system is equipped with full-digital readout for easy implementation of the slow and fast coincidences between various parts of the entire detection system. This new array was used in measurements at the Holifield Radioactive Ion Beam Facility and proven to be an essential tool to measure the large beta delayed two neutron emission branching ratio from the exotic isotope $^{86}$Ga.