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

الأصل · EN

We study the effect of s-wave cross-sections in ⁴He+n and ⁹Li+n elastic scattering reactions by using the Jost function method (JFM). In ⁵He (⁴He+n), the s-wave pole of the S-matrix does not contribute so much to the total cross-section. On the other hand, in ¹⁰Li (⁹Li+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 ⁹Li-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 ⁹Li+n threshold and strongly enhances the s-wave cross-section near the threshold.