Yrast structure of the neutron-rich N=31 isotones {sup 51}Ca and {sup 52}Sc

Journal Article · Tue Jan 15 04:00:00 EST 2008 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.77.014304· OSTI ID:21068038

Fornal, B; Broda, R; Pawlat, T; Wrzesinski, J ^[1]; Janssens, R V. F.; Carpenter, M P; Lauritsen, T; Seweryniak, D; Zhu, S ^[2]; Marginean, N ^[3]; Beghini, S; Lunardi, S; Montagnoli, G; Scarlassara, F ^[4]; Corradi, L; Angelis, G De; Della Vedova, F; Fioretto, E; Gadea, A; Guiot, B ^[3]

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1. Institute of Nuclear Physics, Polish Academy of Sciences, PL-31342 Cracow (Poland)
2. Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
3. INFN, Laboratori Nazionali di Legnaro, I-35020 Legnaro (Italy)
4. Dipartimento di Fisica dell'Universita di Padova and INFN Sezione di Padova, I-35131 Padova (Italy)

The low-lying yrast states in the {sup 51}Ca and {sup 52}Sc nuclei were investigated to obtain information on the evolution of the p{sub 1/2} and f{sub 5/2} neutron single-particle orbitals in neutron-rich nuclei near proton number Z=20. Level structures associated with neutron excitations into these two orbitals and with proton excitations across the Z=20 shell gap were identified. Shell-model calculations with the recently proposed GXPF1A interaction account reasonably well for the fp-shell states. The energy separation between the {nu}p{sub 1/2} and {nu}f{sub 5/2} orbitals in the Ca isotopes appears to be overestimated by the GXPF1A Hamiltonian.

• OSTI ID: 21068038
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 1 Vol. 77; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CALCIUM 51
EXCITATION
HAMILTONIANS
ISOTONIC NUCLEI
NEUTRON-RICH ISOTOPES
NEUTRONS
NUCLEAR STRUCTURE
PROTONS
SCANDIUM 52
SHELL MODELS
SINGLE-PARTICLE MODEL
YRAST STATES