Quasielastic transfer in the {sup 136}Xe+{sup 64}Ni reaction
- Department of Physics and Astronomy, The University of Kansas, Lawrence, Kansas 66045 (United States)
- Purdue University, West Lafayette, Indiana 47907 (United States)
- Argonne National Laboratory, Argonne, Illinois 60439 (United States)
- Centre de Recherches Nucleaires, IN2P3-CNRS/Universite Louis Pasteur, Boite Postal 22, F-67037 Strasbourg Cedex 2 (France)
- Dipartimento di Fisica dell`Universita di Catania and Laboratorio Nazionale del Sud, I-95129, Catania (Italy)
- Istituto Nazionali di Fisica Nucleare, Laboratori Nazionali di Legnaro, Legnaro (Italy)
Single and multinucleon transfer yields for the {sup 136}Xe+{sup 64}Ni reaction at a scattering energy {approx}5{percent} above the Coulomb barrier energy are studied using particle{endash}{gamma}-ray coincidence data. Q-value and scattering-angle distributions are extracted for the stronger channels. A fast transfer mechanism dominates the yields to these channels over an extended Q-value range, leading to a concentration of the cross section near the grazing angle. Analysis of the angular distributions based on a semiclassical barrier penetration model suggests that the single-nucleon and two-neutron exchange channels are dominated, respectively, by direct and two-step sequential transfer from the ground or low-lying excited states of the participating nuclei. The multiproton transfer channels have angular distributions that indicate a more complex mechanism, although direct cluster transfer from an excited configuration cannot be fully discounted. In a separate analysis, the relative population of different mass channels is found to be in general agreement with the expectations of a {open_quotes}random walk{close_quotes} model of particle exchange. {copyright} {ital 1997} {ital The American Physical Society}
- DOE Contract Number:
- FG03-96ER40981; W-31109-ENG-38
- OSTI ID:
- 496877
- Journal Information:
- Physical Review, C, Vol. 55, Issue 5; Other Information: PBD: May 1997
- Country of Publication:
- United States
- Language:
- English
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