Half-lives of neutron-rich ${}^{128-130}$Cd

Abstract

The $\beta$-decay half-lives of ${}^{128\text{–}130}$Cd have been measured with the newly commissioned GRIFFIN $\gamma$-ray spectrometer at the TRIUMF-ISAC facility. The time structures of the most intense $\gamma$-rays emitted following the $\beta$-decay were used to determine the half-lives of ${}^{128}$Cd and ${}^{130}$Cd to be $T_{1/2}=246.2(21)$ ms and $T_{1/2}=126(4)$ ms, respectively. The half-lives of the 3/2${}^{+}$ and 11/2${}^{-}$ states of ${}^{129}$Cd were measured to be $T_{1/2}(3/2^{+})=157(8)$ ms and $T_{1/2}(11/2^{-})=147(3)$ ms. The half-lives of the Cd isotopes around the $N=82$ shell closure are an important ingredient in astrophysical simulations to derive the magnitude of the second $r$-process abundance peak in the $A\sim 130$ region. Our new results are compared with recent literature values and theoretical calculations.

References in corpus (2)

• The r-process of stellar nucleosynthesis: Astrophysics and nuclear physics achievements and mysteries
• Shell model half-lives for r-process N=82 nuclei

Cited by in corpus (7)

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• $\beta$ and $\beta$-delayed neutron decay of the $N=82$ nucleus ${}_{49}^{131}$In${}_{82}$
• Spectroscopy of ${}^{50}$Sc and ab initio calculations of $B(M3)$ strengths
• Detailed spectroscopy of ${}^{46}$Ca: A study of the ${\beta }^{-}$ decay of ${}^{46}$K
• Decay Spectroscopy of ${}^{129}$Cd
• Systematic shell-model study of ${}^{98-130}$Cd isotopes and $8^{+}$ isomeric states