Reduced occupancy of the deeply bound 0d(5/2) neutron state in 32Ar.
Phys Rev Lett
; 93(4): 042501, 2004 Jul 23.
Article
in En
| MEDLINE
| ID: mdl-15323753
ABSTRACT
The 9Be(32Ar, 31Ar)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.
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Collection:
01-internacional
Database:
MEDLINE
Type of study:
Prognostic_studies
Language:
En
Journal:
Phys Rev Lett
Year:
2004
Document type:
Article
Affiliation country:
Estados Unidos