期刊
出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nima.2010.02.262
关键词
Large neutron counter; beta-delayed neutron emission; Astrophysical r-process; Neutron detection efficiency; Neutron background
类别
资金
- Joint Institute for Nuclear Astrophysics (JINA) under NSF [PHY-02-16783]
- National Superconducting Cyclotron Laboratory (NSCL) under NSF [PHY-01-10253]
The neutron long counter NERO was built at the National Superconducting Cyclotron Laboratory (NSCL), Michigan State University, for measuring beta-delayed neutron-emission probabilities. The detector was designed to work in conjunction with a beta-delay implantation station, so that beta decays and beta-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 beta-delayed neutron emission branchings for neutron-rich r-process nuclei produced as low intensity fragmentation beams in in-flight separator facilities. Published by Elsevier B.V.
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