GAMOW-TELLER AND DIPOLE STRENGTH IN THE PB-208(N,P) REACTION

Earlier data on the Pb-208(n, p)Ti-208 reaction at 198 MeV has been an alysed using the multipole decomposition technique, and the contributi ons 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 c alculations of MacFarlane [3] for Gamow-Teller transitions, using thre e different forms for the population of single particle states about t he Fermi energy. Comparison is made with GT-strength values obtained f rom a more recent mean field calculation of these populations, and wit h an older nuclear structure calculation of properties of the lead nuc lei. The L = 1 strength distribution is also reported. (C) 1997 Elsevi er Science B.V.