Evidence for high excitation energy resonances in the 7 alpha disassembly of $^{28}$Si

TL;DR

This paper reports resonance structures in the 7 alpha disassembly of excited $^{28}$Si nuclei, suggesting the formation of high spin toroidal isomers, supported by experimental data and theoretical analysis.

Contribution

It provides experimental evidence for high excitation energy resonances in $^{28}$Si disassembly and supports the existence of high spin toroidal isomers through theoretical analysis.

Findings

Resonance structures observed in the excitation function.

Support for high spin toroidal isomer formation.

Alignment with recent theoretical predictions.

Abstract

The excitation function for the 7 alpha de-excitation of $^{28}$Si nuclei excited to high excitation energies in the collisions of 35 MeV/nucleon $^{28}$Si with $^{12}$C reveals resonance structures that may indicate the population of high spin toroidal isomers such as those predicted by a number of recent theoretical calculations. This interpretation is supported by extended theoretical analyses.