The neutron long counter NERO for studies of β-delayed neutron emission in the r-process
The neutron long counter NERO for studies of β-delayed neutron emission in the r-process
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DOI：
10.1016/j.nima.2010.02.262
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发表时间：
2010-06
影响因子：
1.4
通讯作者：
J. Pereira;J. Pereira;P. Hosmer;P. Hosmer;G. Lorusso;G. Lorusso;P. Santi;P. Santi;A. Couture-A.-C
中科院分区：
文献类型：
--
作者：
J. Pereira;J. Pereira;P. Hosmer;P. Hosmer;G. Lorusso;G. Lorusso;P. Santi;P. Santi;A. Couture-A.-C
中子长计数器NERO是在密歇根州立大学的国家超导回旋加速器实验室（NSCL）建造的，用于测量β缓发中子发射概率。该探测器被设计为与β延迟注入站一起工作，以便可以同时测量注入核发射的β衰变和β延迟中子。对于感兴趣的能量范围，约40%的高效率，沿着小背景，对于测量飞行分离器设施中作为低强度碎裂束产生的富中子r过程核的β缓发中子发射分支是至关重要的。
The neutron long counter NERO was built at the National Superconducting Cyclotron Laboratory (NSCL), Michigan State University, for measuring β-delayed neutron-emission probabilities. The detector was designed to work in conjunction with a β-delay implantation station, so that β decays and β-delayed neutrons emitted from implanted nuclei can be measured simultaneously. The high efficiency of about 40%, for the range of energies of interest, along with the small background, are crucial for measuring β-delayed neutron emission branchings for neutron-rich r-process nuclei produced as low intensity fragmentation beams in in-flight separator facilities.