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Reduced occupancy of the deeply bound 0d(5/2) neutron state in Ar-32

Gade, A, Bazin, D, Brown, BA, Campbell, CM, Church, JA, Dinca, DC, Enders, J, Glasmacher, T, Hansen, PG, Hu, Z, Kemper, KW, Mueller, WF, Olliver, H, Perry, BC, Riley, LA, Roeder, BT, Sherrill, BM, Terry, JR, Tostevin, JA and Yurkewicz, KL (2004) Reduced occupancy of the deeply bound 0d(5/2) neutron state in Ar-32 PHYSICAL REVIEW LETTERS, 93 (4). ? - ?. ISSN 0031-9007


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The Be-9(Ar-32,Ar-31)X reaction, leading to the 5/2(+) ground state of a nucleus at the proton drip line, has a cross section of 10.4(13) mb at a beam energy of 65.1 MeV/nucleon. This translates into a spectroscopic factor that is only 24(3)% of that predicted by the many-body shell-model theory. We introduce refinements to the eikonal reaction theory used to extract the spectroscopic factor to clarify that this very strong reduction represents an effect of nuclear structure. We suggest that it reflects correlation effects linked to the high neutron separation energy (22.0 MeV) for this state.

Item Type: Article
Uncontrolled Keywords: Science & Technology, Physical Sciences, Physics, Multidisciplinary, Physics, NUCLEAR SHELL-MODEL, BETA-DECAY, EXOTIC NUCLEI, HOLE STATES, SD-SHELL, RESONANCE, ENERGIES, CORE, SPIN
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Divisions: Faculty of Engineering and Physical Sciences > Physics
Depositing User: Mr Adam Field
Date Deposited: 27 May 2010 14:07
Last Modified: 23 Sep 2013 18:26

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