Energy levels of 28Si

Abstract

Proton energies and strengths of (p, γ), (p, p 1), (p, p 2) and (p, α 1γ) resonances of the 27Al + p reaction were determined for E p < 2.5 MeV. The γ-decay of 78 resonances and 46 bound levels was established and four new bound levels were found at E x = 9793.8±2.0, 10513.5±1.0, 10884.1±2.0 and 11778.8±1.5 keV. The level at E x = 11.43 MeV was found to be a doublet. Lifetimes of 25 bound levels were measured by means of the Doppler-shift attenuation technique. Angular distributions were measured at 15 resonances.