Alpha clustering in $^{28}$Si probed through the identification of high-lying $0^+$ states

TL;DR

This study investigates alpha clustering in $^{28}$Si by identifying high-lying $0^+$ states through inelastic scattering, supporting the existence of cluster states and a superdeformed band with experimental and theoretical agreement.

Contribution

It reports the discovery of a new $0^+$ state in $^{28}$Si and links it to a superdeformed band, advancing understanding of alpha clustering in nuclei.

Findings

Identification of a new $0^+$ state in $^{28}$Si.

Good agreement between experimental data and semi-microscopic model.

Support for the superdeformed band structure in $^{28}$Si.

Abstract

Aspects of nuclear structure in alpha-conjugate nuclei have long been associated with alpha clustering, including the existence of superdeformed bands. In this paper, an alpha-particle inelastic scattering experiment investigating the location of $0^+$ states in $^{28}$Si is reported in an attempt to locate possible cluster states. The results are compared to a semi-microscopic model which shows good agreement with the data, and supports the assignment of a newly discovered $0^+$ state as the band-head of a previously observed superdeformed band in $^{28}$Si