In-beam γ-ray spectroscopy at the proton dripline: 23Al
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Gade, A, Adrich, P, Bazin, D, Bowen, MD, Brown, BA, Campbell, CM, Cook, JM, Glasmacher, T, Hosier, K, McDaniel, S, McGlinchery, D, Obertelli, A, Riley, LA, Siwek, K, Tostevin, JA and Weisshaar, D (2008) In-beam γ-ray spectroscopy at the proton dripline: 23Al Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 666 (3). 218 - 221. ISSN 0370-2693
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Official URL: http://dx.doi.org/10.1016/j.physletb.2008.07.062
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, is consistent with the presence of a γ-branch and with the population of this state in the two reactions.
| Item Type: | Article |
|---|---|
| Divisions: | Faculty of Engineering and Physical Sciences > Physics |
| ID Code: | 7360 |
| Deposited By: | Symplectic Elements |
| Deposited On: | 24 Oct 2011 10:25 |
| Last Modified: | 15 May 2013 14:36 |
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