中文

丰中子 $^{128-130}$Cd 的半衰期

核实验 2017-11-16 v1

摘要

利用 TRIUMF-ISAC 设施上新投入使用的 GRIFFIN γ\gamma 射线谱仪测量了 128130^{128\text{--}130}Cd 的 β\beta 衰变半衰期。采用 β\beta 衰变后发射的最强 γ\gamma 射线的时间结构,确定 128^{128}Cd 与 130^{130}Cd 的半衰期分别为 T1/2=246.2(21)T_{1/2}= 246.2(21) ms 与 T1/2=126(4)T_{1/2}= 126(4) ms。测得 129^{129}Cd 的 3/2+^+ 与 11/2^- 能级的半衰期分别为 T1/2(3/2+)=157(8)T_{1/2}(3/2^+)= 157(8) ms 与 T1/2(11/2)=147(3)T_{1/2}(11/2^-)= 147(3) ms。在 N=82N=82 壳层闭合附近的 Cd 同位素半衰期,是天体物理模拟中推导 A130A\sim130 区域第二 rr 过程丰度峰大小的重要输入量。我们将新结果与近期文献值及理论计算进行了比较。

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引用

@article{arxiv.1711.05621,
  title  = {Half-lives of neutron-rich $^{128-130}$Cd},
  author = {Dunlop and R. and Bildstein and V. and Dillmann and I. and Jungclaus and A. and Svensson and C. E. and Andreoiu and C. and Ball and G. C. and Bernier and N. and Bidaman and H. and Boubel and P. and Burbadge and C. and Caballero-Folch and R. and Dunlop and M. R. and Evitts and L. J. and Garcia and F. and Garnsworthy and A. B. and Garrett and P. E. and Hackman and G. and Hallam and S. and Henderson and J. and Ilyushkin and S. and Kisliuk and D. and Krücken and R. and Lassen and J. and Li and R. and MacConnachie and E. and MacLean and A. D. and McGee and E. and Moukaddam and M. and Olaizola and B. and Padilla-Rodal and E. and Park and J. and Paetkau and O. and Petrache and C. M. and Pore and J. L. and Radich and A. J. and Ruotsalainen and P. and Smallcombe and J. and Smith and J. K. and Tabor and S. L. and Teigelhöfer and A. and Turko and J. and Zidar and T},
  journal= {arXiv preprint arXiv:1711.05621},
  year   = {2017}
}