α and α Conjugate Fragment Decay from the Disassembly of ²⁸Si at Very High Excitation Energy

Abstract

Exclusive measurements for α and α conjugate exit channels are carried out for 35 MeV/nucleon 28 Si induced reactions. Systematic analyses of these channels reveal high energy resonance structures in 7α de-excitation channels. The resonances are compared with results of several recent theoretical calculations for toroidal high-spin isomers. The possible underlying physics of these observations are discussed.