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One-neutron removal reactions on Al isotopes around the N=20 shell closure
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2012 (English)In: Physical Review C. Nuclear Physics, ISSN 0556-2813, E-ISSN 1089-490X, Vol. 85, no 4, 044312-1-044312-10 p.Article in journal (Refereed) Published
Abstract [en]

The one-neutron removal cross sections of neutron-rich Al isotopes and longitudinal momentum distributions of the residues have been measured for A=33 to 36 at relativistic energies (≈900 MeV/u). The inclusive data have been interpreted within the eikonal approximation. The evolution of the single-particle occupancy in the ground state of 33,34,35Al has been studied and compared with shell model predictions. The inferred 2s1/2 neutron occupancy in the 33Al ground-state wave function is 20% to 40% lower than the predicted one. The inclusive data do not exclude the presence of intruder states. Some intruder l=1 occupancy is found in 34Al, similarly to 33Mg. The single-particle 1f7/2 occupancy shows a gradual increase at N=22. Correspondingly, a decrease of the 1d3/2 strength has been observed.

Place, publisher, year, edition, pages
2012. Vol. 85, no 4, 044312-1-044312-10 p.
National Category
Subatomic Physics
Research subject
Nuclear Physics
Identifiers
URN: urn:nbn:se:uu:diva-218462DOI: 10.1103/PhysRevC.85.044312OAI: oai:DiVA.org:uu-218462DiVA: diva2:695770
Available from: 2014-02-12 Created: 2014-02-12 Last updated: 2017-12-06Bibliographically approved

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Publisher's full texthttp://link.aps.org/doi/10.1103/PhysRevC.85.044312

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Lantz, Mattias

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