论文标题
非常缺陷的$^{60} $ ge和$^{62} $ ge nuclei的β衰变
Beta decay of the very neutron-deficient $^{60}$Ge and $^{62}$Ge nuclei
论文作者
论文摘要
We report here the results of a study of the $β$ decay of the proton-rich Ge isotopes, $^{60}$Ge and $^{62}$Ge, produced in an experiment at the RIKEN Nishina Center. We have improved our knowledge of the half-lives of $^{62}$Ge (73.5(1) ms), $^{60}$Ge (25.0(3) ms) and its daughter nucleus, $^{60}$Ga (69.4(2) ms).我们测量了单个$β$删除的质子和$γ$排放及其相关的分支比率。已经确定了衰减方案，绝对费米和Gamow-Teller转变强度。已经推导了所研究的细胞核的质量过度。以$^{60} $ ge获得了总$β$删除的质子发射分支比例为67（3）％。已经在$^{60} $ ga的能量水平以及1/2 $^ - $兴奋的状态下获得了新的信息。对于$^{62} $ ge的衰减，我们提取了基态喂养的基态进食。在$^{62} $ ga女儿中人口稠密的水平上添加了八条新的$γ$线。
We report here the results of a study of the $β$ decay of the proton-rich Ge isotopes, $^{60}$Ge and $^{62}$Ge, produced in an experiment at the RIKEN Nishina Center. We have improved our knowledge of the half-lives of $^{62}$Ge (73.5(1) ms), $^{60}$Ge (25.0(3) ms) and its daughter nucleus, $^{60}$Ga (69.4(2) ms). We measured individual $β$-delayed proton and $γ$ emissions and their related branching ratios. Decay schemes and absolute Fermi and Gamow-Teller transition strengths have been determined. The mass excesses of the nuclei under study have been deduced. A total $β$-delayed proton-emission branching ratio of 67(3)% has been obtained for $^{60}$Ge. New information has been obtained on the energy levels populated in $^{60}$Ga and on the 1/2$^-$ excited state in the $βp$ daughter $^{59}$Zn. We extracted a ground state to ground state feeding of 85.3(3)% for the decay of $^{62}$Ge. Eight new $γ$ lines have been added to the de-excitation of levels populated in the $^{62}$Ga daughter.
