Nuclear rainbow in elastic scattering of 9Be nuclei

A systematic investigation of the elastic scattering of the 9 Be nucleus, which is among themost loosely bound stable nuclei was performed.Differential cross sections for elastic 9 Be + 16 O scattering were measured at a c.m. energy of 47.5 MeV (beam of 132-MeV 16 O nuclei). Available data at different energy values and data for neighboring nuclei were included in our analysis. As a result, the very fact of rainbow scattering was reliably established for the first time in systems involving 9 Be. In addition, the analysis in question made it possible to identify Airy minima and to determine unambiguously the nucleus-nucleus potential with a high probability.