One-neutron removal reactions on Al isotopes around the N=20 shell closure

TitleOne-neutron removal reactions on Al isotopes around the N=20 shell closure
Publication TypeJournal Article
Year of Publication2012
AuthorsNociforo, C., A. Prochazka, R. Kanungo, T. Aumann, D. Boutin, D. Cortina-Gil, B. Davids, M. Diakaki, F. Farinon, H. Geissel, R. Gernhauser, R. Janik, B. Jonson, B. Kindler, R. Knobel, R. Krucken, N. Kurz, M. Lantz, H. Lenske, Y. A. Litvinov, B. Lommel, K. Mahata, P. Maierbeck, A. Musumarra, T. Nilsson, C. Perro, C. Scheidenberger, B. Sitar, P. Strmen, B. Sun, I. Szarka, I. Tanihata, H. Weick, and M. Winkler
JournalPhysical Review C
Volume85
Issue4
Date PublishedApr
ISBN Number0556-2813
Accession NumberWOS:000302698200003
AbstractThe 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 (approximate to 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 Al-33,Al-34,Al-35 has been studied and compared with shell model predictions. The inferred 2s(1/2) neutron occupancy in the Al-33 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 Al-34, similarly to Mg-33. The single-particle 1f(7/2) occupancy shows a gradual increase at N = 22. Correspondingly, a decrease of the 1d(3/2) strength has been observed.
URL<Go to ISI>://WOS:000302698200003
DOI10.1103/PhysRevC.85.044312
Short TitleOne-neutron removal reactions on Al isotopes around the N=20 shell closure
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