$\alpha$ decay properties of nucleus ${}^{297}$Og within two-potential approach

Abstract

The $\alpha$ decay half-life of unknown nucleus ${}^{297}$Og is predicted within two-potential approach, and $\alpha$ preformation probabilities of 64 odd-$A$ nuclei in the region of proton numbers $82<Z<126$ and neutron numbers $152<N<184$ from ${}^{251}$Cf to ${}^{295}$Og are extracted. In addition, based on the latest experimental data, a new set of parameters for $\alpha$ preformation probabilities considering the shell effect and proton-neutron interaction are obtained. The predicted $\alpha$ decay half-life of ${}^{297}$Og is 0.16 ms within a factor of 4.97 as well as the spin and parity of ground states for nuclei ${}^{269}$Sg, ${}^{285}$Fl and ${}^{293}$Lv are $3/2^{+}$, $3/2^{+}$ and $5/2^{+}$, respectively.

Comments: Chinese Physics C (2017) in press