Study of nuclei in the vicinity of the "Island of Inversion" through fusion-evaporation reaction

TL;DR

This paper reports the first observation of high-spin states in nuclei near the 'Island of Inversion' using a fusion-evaporation reaction, providing new insights into their structure through experimental and shell model analysis.

Contribution

It introduces a novel fusion-evaporation method to study nuclei near the 'Island of Inversion' and presents detailed spectroscopic data and shell model calculations.

Findings

First observation of high-spin states in these nuclei

Successful spin-parity measurements via anisotropy and polarization

Shell model calculations support experimental results

Abstract

We report the first observation of high-spin states in nuclei in the vicinity of the "island of inversion", populated via the 18O+18O fusion reaction at an incident beam energy of 34 MeV. The fusion reaction mechanism circumvents the limitations of non-equilibrated reactions used to populate these nuclei. Detailed spin-parity measurements in these difficult to populate nuclei have been possible from the observed coincidence anisotropy and the linear polarization measurements. The spectroscopy of 33,34P and 33S is presented in detail along with the results of calculations within the shell model framework.