Evidence for higher nodal band states with ${}^3$He cluster structure in ${}^{19}$Ne and prerainbows in ${}^3$He+${}^{16}$O scattering

Abstract

The existence of a higher nodal band state with a ${}^3$He cluster structure, i.e. a vibrational mode in which the inter-cluster relative motion is excited, in ${}^{19}$Ne in addition to those with the $\alpha$ cluster structure in ${}^{20}$Ne and the ${}^{16}$O cluster structure in ${}^{32}$S, is suggested, which reinforces the importance of the concept of ${}^3$He-clustering in nuclei. This conclusion was reached by investigating ${}^3$He scattering from ${}^{16}$O in a wide range of incident energies and prerainbow oscillations.