Neutron decay ofLi10produced by fragmentation

Abstract

The neutron decay of ${}_{}{}^{10}{}_{}{}^{}\mathrm{Li}$, produced in the reaction of 80 MeV/nucleon ${}_{}{}^{18}{}_{}{}^{}\mathrm{O}$ + ${}_{}{}^{\mathrm{nat}}{}_{}{}^{}\mathrm{C}$, was studied by the coincidence detection of neutrons and ${}_{}{}^9{}_{}{}^{}\mathrm{Li}$ nuclei in a collinear geometry. An analysis of the relative velocity spectrum indicates the presence of a ${}_{}{}^{10}{}_{}{}^{}\mathrm{Li}$ state which decays by very low energy neutron emission. This state corresponds to either the ground state of ${}_{}{}^{10}{}_{}{}^{}\mathrm{Li}$, in which case it is probably an s-wave resonance, or an excited state at ${\mathit{E}}_{\mathit{x}}$≊2.5 MeV.