Nuclear forward glory,σRandfN(0°)in the scattering of6Heby carbon

Abstract

Using the generalized optical theorem for charged particles, the total reaction cross section ${\ensuremath{\sigma}}_{R}$ and the nuclear scattering amplitude ${f}_{N}$ at $0\ifmmode^\circ\else\textdegree\fi{}$ have been determined model independently for the first time in the ${}^{6}\mathrm{He}{+}^{12}\mathrm{C}$ system. A large fraction of ${\ensuremath{\sigma}}_{R}$ is accounted for by ${f}_{N}(0\ifmmode^\circ\else\textdegree\fi{})$ --- a manifestation of the nuclear forward glory effect. A comparison with the ${}^{6}\mathrm{Li}{+}^{12}\mathrm{C}$ system supports the prediction that the high break-up probability of ${}^{6}\mathrm{He}$ reduces the fraction of the total reaction cross section accounted for by the nuclear scattering amplitude at $0\ifmmode^\circ\else\textdegree\fi{}.$