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Author Devlin, M. ♦ Cline, D. ♦ Ibbotson, R. ♦ Simon, M. W. ♦ Wu, C. Y.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PHYSICS ♦ DYSPROSIUM 162 TARGET ♦ NICKEL 58 REACTIONS ♦ TRANSFER REACTIONS ♦ Q-VALUE ♦ PICKUP REACTIONS ♦ SEMICLASSICAL APPROXIMATION ♦ GAMMA RADIATION ♦ QUASI-ELASTIC SCATTERING ♦ PROBABILITY
Abstract Measurements of few-nucleon transfer reaction probabilities and {ital Q}-value distributions have been made with a kinematic-coincidence detector system at sub-barrier energies in {sup 58}Ni + {sup 162}Dy. Both the one-neutron pickup and one-proton stripping reaction probabilities fall off as a function of the distance of closest approach as expected from semiclassical models; the measured two-neutron pickup probabilities fall off less steeply than expected, consistent with previous measurements. The origin of this {open_quote}{open_quote}slope anomaly{close_quote}{close_quote} is discussed. The measured transfer {ital Q}-value distributions are consistent with semiclassical expectations, both in terms of the optimum {ital Q} values ({ital Q}{sub opt}) and the widths of the {ital Q}-value distributions, except for the one-proton stripping channel {ital Q}{sub opt}, which is more negative than expected by approximately 3 MeV. {open_quote}{open_quote}Cold{close_quote}{close_quote} two-neutron transfer has been observed, and the probability of the cold portion of the two-neutron transfer is in agreement with the previous {gamma}-ray measurements and calculations. No enhanced quasielastic multipair transfer is observed, in contrast to some previous measurements. An upper limit of {ital P}{sub tr}{lt}10{sup 4} is placed on the quasielastic four-neutron pickup channel. {copyright} {ital 1996 The American Physical Society.}
ISSN 05562813
Educational Use Research
Learning Resource Type Article
Publisher Date 1996-06-01
Publisher Place United States
Journal Physical Review, C
Volume Number 53
Issue Number 6


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