Resonances inLi7(p, n)Be7

Abstract

An investigation of experimental data concerning the $\mathrm{Li}(p, n)$ reaction indicates that the resonance at 2.25-Mev proton energy is due to the influence of a spin 3, isotopic spin 1, even parity level of ${\mathrm{Be}}^8$, 19.2 Mev above the ground state, and that the background reaction intensity is predominantly the result of a spin-1 state of odd parity, and a spin-2 state of odd parity and isotopic spin 0. Cross sections, angular distributions, and neutron polarizations calculated on this basis are in good agreement with previous experimental measurements of these quantities.