Theoretical studies of possible toroidal high-spin isomers in the light-mass region

TL;DR

This paper reviews theoretical predictions of toroidal high-spin isomers in light nuclei, reports new isomers in nickel-56, and discusses potential experimental production methods.

Contribution

It extends previous theoretical work by identifying new toroidal high-spin isomers in $^{56}$Ni and explores their possible experimental creation.

Findings

Identification of new high-spin isomers in $^{56}$Ni at I=114$$ and 140$$

Confirmation of systematics for toroidal high-spin states in light nuclei

Proposed fusion reactions for experimental detection of these exotic states

Abstract

We review our theoretical knowledge of possible toroidal high-spin isomers in the light mass region in 28$\le$$A$$\le$52 obtained previously in cranked Skyrme-Hartree-Fock calculations. We report additional toroidal high-spin isomers in $^{56}$Ni with $I$=114$\hbar$ and 140$\hbar$, which follow the same (multi-particle)--(multi-hole) systematics as other toroidal high-spin isomers. We examine the production of these exotic nuclei by fusion of various projectiles on $^{20}$Ne or $^{28}$Si as an active target in time-projection-chamber (TCP) experiments.