Bk. Nayak et al., STUDIES OF ONE-PROTON AND 2-PROTON TRANSFER IN C-12, O-16-154, AND O-16+IN-115 REACTIONS(SM), Physical review. C. Nuclear physics, 55(6), 1997, pp. 2951-2958
Cross sections for quasielastic scattering and transfer reactions have
been measured for C-12, O-16 + Sm-154, and O-16 + In-115 systems at e
nergies above the Coulomb barrier. The transfer probabilities for one-
and two-proton stripping reactions show an exponential decrease with
increasing distance of closest approach for all the systems and the me
asured decay constants are found to be smaller than those derived from
binding-energy considerations on the basis of the semiclassical model
using a Coulomb trajectory. These results on the observed enhancement
of transfer probabilities were further analyzed within the framework
of the semiclassical model using two different formalisms: (1) conside
ring the contribution of both Coulomb and nuclear branches of distance
of closest approach to transfer probability and (2) in terms of the q
uantum diffractional effect in the broadening of the transfer angular
distribution. It is seen that both these formalisms are able to offer
a consistent explanation for the observed enhancement in the transfer
probabilities and account for the ''slope anomaly'' seen in the transf
er reactions in these systems.