Barrier distributions from elastic scattering

N. Rowleya, b, H. Timmersc, J. R. Leighc, M. Dasguptac, D. J. Hindec, J. C. Meinc, C. R. Mortonc and J. O.
Newtonc

a Department of Physics and Astronomy, University of Manchester Manchester M13 9PL UK
b Department of Physics, University of Surrey Guildford GU2 5XH UK
c Department of Nuclear Physics, Research School of Physical Sciences and Engineering, Australian National University Canberra, ACT 0200 Australia

Physics Letters B Volume 373, Issues 1-3, 18 April 1996, Pages 23-29

A pdf-file of the paper can be found here (368 kB) .

Abstract

A new representation of the distribution of potential barriers present in heavy-ion reactions is defined in terms of the elastic scattering excitation function. Its validity is demonstrated for the systems 16O + 144,154Sm,186W, 208Pb, for which precise measurements have been made. Compared with fusion barrier distributions, which show structures characteristic of collective inelastic couplings, the elastic distributions are less detailed. This appears to be due to couplings to weaker direct-reaction channels.

Author Keywords: Nuclear reactions; 144Sm(16O,X), E = 55-75 MeV; 154Sm(16O,X), E = 53-75 MeV; 186W(16O,X), E = 61-85 MeV; 208Pb(16O,X), E = 69-93 MeV; Measured large-angle elastic scattering; Fusion barrier distributions

PACS classification codes: 24.10.-i; 24.10.Eq; 25.70.-z; 25.70.Bc; 25.70.Jj