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

TL;DR

This paper predicts the alpha decay half-life of the superheavy nucleus $^{297}$Og using a two-potential approach, extracts preformation probabilities for various nuclei, and refines parameters considering shell effects and proton-neutron interactions.

Contribution

It introduces a new set of parameters for alpha preformation probabilities that incorporate shell effects and proton-neutron interactions, improving decay predictions.

Findings

Predicted alpha decay half-life of $^{297}$Og is 0.16 ms.

Extracted preformation probabilities for 64 odd-A nuclei.

Assigned spin and parity to several superheavy nuclei.

Abstract

The $\mathcal{\alpha}$ decay half-life of unknown nucleus $^{297}$Og is predicted within two-potential approach, and $\mathcal{\alpha}$ 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 $\mathcal{\alpha}$ preformation probabilities considering the shell effect and proton-neutron interaction are obtained. The predicted $\mathcal{\alpha}$ 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.