Quasiparticle and quasihole states of nuclei around {sup 56}Ni

Journal Article · Mon Jun 15 04:00:00 EDT 2009 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.79.064313· OSTI ID:21293746

Barbieri, C; Hjorth-Jensen, M ^[1]

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1. Theoretical Nuclear Physics Laboratory, RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan) and Gesellschaft fuer Schwerionenforschung Darmstadt, Planckstr. 1, D-64259 Darmstadt (Germany)

The single-particle spectral function of {sup 56}Ni has been computed within the framework of self-consistent Green's functions theory. The Faddeev random phase approximation method and the G matrix technique are used to account for the effects of long- and short-range physics on the spectral distribution. Large-scale calculations have been performed in spaces including up to ten oscillator shells. The chiral N{sup 3}LO interaction is used together with a monopole correction that accounts for eventual missing three-nucleon forces. The single-particle energies associated with nucleon transfer to valence 1p0f orbits are found to be almost converged with respect to both the size of the model space and the oscillator frequency. The results support that {sup 56}Ni is a good doubly magic nucleus. The absolute spectroscopic factors to the valence states on A=55,57 are also obtained. For the transition between the ground states of {sup 57}Ni and {sup 56}Ni, the calculations nicely agree with heavy-ion knockout experiments.

• OSTI ID: 21293746
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 6 Vol. 79; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CHIRALITY
COMPUTERIZED SIMULATION
CORRECTIONS
DISTRIBUTION
FADDEEV EQUATIONS
G MATRIX
GREEN FUNCTION
GROUND STATES
HEAVY IONS
KNOCK-OUT REACTIONS
MAGIC NUCLEI
MONOPOLES
NICKEL 56
NICKEL 57
NUCLEONS
OSCILLATORS
RANDOM PHASE APPROXIMATION
SPECTRAL FUNCTIONS
SPECTROSCOPIC FACTORS