Neutron-rich isotopes around the r-process “waiting-point” nuclei2979Cu50 and3080Zn50
Neutron-rich isotopes around the r-process “waiting-point” nuclei2979Cu50 and3080Zn50
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r过程“等待点”核2979Cu50和3080Zn50周围的富中子同位素
DOI：
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发表时间：
1991
期刊：
影响因子：
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通讯作者：
The Isolde Collaboration
中科院分区：
文献类型：
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作者：
K. Kratz;H. Gabelmann;P. Möller;B. Pfeiffer;H. Ravn;A. Wöhr;The Isolde Collaboration
测量了超丰中子铜砷核的β衰变半衰期(t1/2)和延迟中子发射几率(Pn)，其中包括新同位素77Cu48、79Cu50、81Zn51和84Ga53。随着现在四个N∼-50“等待点”核的T1/2和Pn值的已知，我们关于r过程已经在Aβ-80附近达到局部∼流平衡的假设进一步得到加强。
Beta-decay half-lives (T1/2) and delayed-neutron emission probabilities (Pn) of very neutron-rich Cu to As nuclei have been measured, among them the new isotopes77Cu48,79Cu50,81Zn51 and84Ga53. With the T1/2 and Pn-values of now four N ∼-50 ”waiting-point” nuclei known, our hypothesis that the r-process has attained a local β-flow equilibrium araound A∼-80 is further strengthened.