Effects of anharmonic vibration on large-angle quasi-elastic scattering of {sup 16}O+{sup 144}Sm

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

DOI:https://doi.org/10.1103/PHYSREVC.77.014606· OSTI ID:21068056

Zamrun, Muhammad F; Hagino, K ^[1]

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1. Department of Physics, Tohoku University, Sendai 980-8578 (Japan)

We study the effects of double octupole and quadrupole phonon excitations in the {sup 144}Sm nucleus on quasi-elastic {sup 16}O+{sup 144}Sm scattering at backward angles. To this end, we use the coupled-channels framework, taking into account explicitly the anharmonicities of the vibrations. We use the same coupling scheme as that previously employed to explain the experimental data of sub-barrier fusion cross sections for the same system. We show that the experimental data for the quasi-elastic cross sections are well reproduced in this way, although the quasi-elastic barrier distribution has a distinct high energy peak which is somewhat smeared in the experimental barrier distribution. We also discuss the effects of proton transfer on the quasi-elastic barrier distribution. Our study indicates that the fusion and quasi-elastic barrier distributions for this system cannot be accounted for simultaneously with the standard coupled-channels approach.

• OSTI ID: 21068056
• 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
COUPLED CHANNEL THEORY
COUPLING
CROSS SECTIONS
DISTRIBUTION
EXCITATION
OCTUPOLES
OXYGEN 16
OXYGEN 16 REACTIONS
PHONONS
PROTONS
QUADRUPOLES
QUASI-ELASTIC SCATTERING
SAMARIUM 144
SAMARIUM 144 TARGET