Effects of anharmonic vibration on large-angle quasi-elastic scattering of {sup 16}O+{sup 144}Sm
- 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, Vol. 77, Issue 1; Other Information: DOI: 10.1103/PhysRevC.77.014606; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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