Effects of the target spin on the reaction mechanism of the {sup 16}O + {sup 63}Cu system

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

DOI:https://doi.org/10.1103/PHYSREVC.78.064610· OSTI ID:21199439

Shorto, J M. B.; Crema, E; Simoes, R F; Monteiro, D S; Huiza, J F. P.; Added, N ^[1]; Gomes, P R. S. ^[2]

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1. Departamento de Fisica Nuclear, Instituto de Fisica da Universidade de Sao Paulo, Caixa Postal 66318, Sao Paulo 05315-970, SP (Brazil)
2. Instituto de Fisica, Universidade Federal Fluminense, Av. Litoranea s/n, Gragoata, Niteroi, Rio de Janeiro 24210-340 (Brazil)

Precise quasielastic and {alpha}-transfer excitation functions, at {theta}{sub lab}=161 deg., have been measured at energies near the Coulomb barrier for the {sup 16}O + {sup 63}Cu system. This is the first time reported quasielastic barrier distribution for a medium odd-A nucleus target deduced from the data. Additional elastic scattering angular distributions data available in the literature for this system were also used in the investigation of the role of several individual channels in the reaction dynamics, by comparing the data with free-parameter coupled-channels calculations. In order to do so, the nucleus-nucleus bare potential has a double-folding potential as the real component and only a very short-range imaginary potential. The quasielastic barrier distribution has been shown to be a powerful tool in this analysis at the barrier region. A high collectivity of the {sup 63}Cu was observed, mainly due to the strong influence of its 5/2{sup -} and 7/2{sup -} states on all reaction channels investigated. A striking influence of the reorientation of the ground-state target-spin on the elastic cross sections, taken at backward angles, was also observed.

• OSTI ID: 21199439
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 6 Vol. 78; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
COPPER 63
COULOMB FIELD
COUPLED CHANNEL THEORY
ELASTIC SCATTERING
EXCITATION FUNCTIONS
GROUND STATES
NUCLEAR REACTIONS
NUCLEON-NUCLEON POTENTIAL
OXYGEN 16
POTENTIALS
REACTION KINETICS
SPIN