Gamow-Teller and dipole strength in the 208Pb(n,p) reaction

Earlier data on the 208Pb(n,p)208Ti reaction at 198 MeV has been analysed using the multipole decomposition technique, and the contributions to the spectra from L=0 and 1 transitions determined. The L=0 cross section has been found to be smaller than values given by the calculations of MacFarlane (1986) for Gamow-Teller transitions, using three different forms for the population of single particle states about the Fermi energy. Comparison is made with GT-strength values obtained from a more recent mean field calculation of these populations, and with an older nuclear structure calculation of properties of the lead nuclei. The L=1 strength distribution is also reported. (orig.)