Excitation Function for Proton-Neutron Reaction in LithiumLi7(p,n)

Abstract

The excitation function of the $p,n$ reaction in lithium ${\mathrm{Li}}^7\mathrm{}(p,n)\mathrm{}$ has been studied in the region from the threshold (1.85 Mev) to 3.20 Mev. Neutron groups have been found to be emitted at proton energies of 1.92, 2.28, and 3.06 Mev, suggesting the existence of energy levels in ${\mathrm{Be}}^8$ at 19.8, 19.1, 18.8 Mev in addition to the other well-known states.