An $S$-matrix analysis of the integrated and differential cross sections of the reaction ${}_{}{}^6{}_{}{}^{}\mathrm{Li}(n, t)\alpha$ over the energy range 0-3.9 MeV shows that the first $\frac{3}{2^{-}}$ excited state of ${}_{}{}^7{}_{}{}^{}\mathrm{Li}$ should be situated at about 8.87 MeV. This value is lower than the one obtained in previous parametrizations.

NUCLEAR REACTIONS $S$-matrix analysis, ${}_{}{}^6{}_{}{}^{}\mathrm{Li}(n, t)\alpha$, $E_n$ up to 3.9 MeV, integrated and differential cross sections; first $\frac{{}_{}{}^{-}{}_{}{}^{}3}{2}$ excited level of ${}_{}{}^7{}_{}{}^{}\mathrm{Li}$ located at ${\mathrm{E}}_x=8.87\mathrm{}$ MeV.

• Received 14 February 1978

DOI:https://doi.org/10.1103/PhysRevC.18.1035