Study for the s-wave in ^{10}Li with analysis of cross-sections

Details Study for the s-wave in ^{10}Li with analysis of cross-sections Study for the s-wave in ^{10}Li with analysis of cross-sections

2000-10-25

arxiv.org/abs/nucl-th/0010085v1

Physics

Nuclear Physics

Nuclear Theory

12 pages, 3 figures, submitted for publication

Scientific paper

We study the effect of s-wave cross-sections in $^{4}$He+$n$ and $^{9}$Li+$n$ elastic scattering reactions by using the Jost function method (JFM). In $^{5}$He ($^{4}$He+$n$), the s-wave pole of the $S$-matrix does not contribute so much to the total cross-section. On the other hand, in $^{10}$Li ($^{9}$Li+$n$), the s-wave component can not be neglected due to a relatively strong attraction for the s-waves of the core+$n$ potential. It is shown that the $^{9}$Li-$n$ potential, which is microscopically derived by taking into account the pairing-blocking effect for a p-wave neutron, reproduces the s-wave pole close to the $^{9}$Li+$n$ threshold and strongly enhances the s-wave cross-section near the threshold.

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