Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10725902 | Physics Letters B | 2008 | 4 Pages |
Abstract
We report on the first in-beam γ-ray spectroscopy of 23Al using two different reactions at intermediate beam energies: inelastic scattering off 9Be and heavy-ion induced one-proton pickup, 9Be(22Mg,23Al+γ)X, at 75.1 MeV/nucleon. A γ-ray transition at 1616(8) keV-exceeding the proton separation energy by 1494 keV-was observed in both reactions. From shell model and proton decay calculations we argue that this γ-ray decay proceeds from the core-excited 7/2+ state to the 5/2+ ground state of 23Al. The proposed nature of this state, [22Mg(21+)âÏd5/2]7/2+, is consistent with the presence of a γ-branch and with the population of this state in the two reactions.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
A. Gade, P. Adrich, D. Bazin, M.D. Bowen, B.A. Brown, C.M. Campbell, J.M. Cook, T. Glasmacher, K. Hosier, S. McDaniel, D. McGlinchery, A. Obertelli, L.A. Riley, K. Siwek, J.A. Tostevin, D. Weisshaar,