
%0 Journal Article
%A Barker, FC 
%T Consistent Description of Unbound States Observed in Scattering and Reactions
%J Australian Journal of Physics
%D 1988/12/01
%V 41
%N 6
%P 743-764
%K 
%R https://doi.org/10.1071/PH880743
%U https://www.publish.csiro.au/paper/PH880743 
%X The unbound states of a nucleus C may be studied in elastic scattering A + a -+ C -+ A + a, and in reactions of the type B+b -+ C+c, in which C is an unstable product nucleus. Expressions for the scattering cross sections or phase shifts, and for the dependence of the reaction cross section on Ee, have been derived from R-matrix theory, and it is argued that consistent values of the R-matrix parameters should be used in describing the two types of data. This requirement has been disregarded, however, in a recent paper concerned with the 2+ states of SBe. On the other hand, support for the consistency argument comes from theoretical and experimental work done recently in Canberra on the low-lying states of SHe and sLi. 
