Nuclear structure studies via neutron interactions

Comparison has been made between the empirical integrated strengths and external R-functions and the predictions of a dispersive optical model for the n-208Pb system, for partial waves through f7/2. Parameters of a constant geometry model give a fair representation of the experimental results. A hint of the need for a parity dependence in one of the model parameters is seen in the two data and in thetotal cross section in the low-energy region. Other research performed consisted of: (1) refinement of the resonance analysis of the n-208Pb system, resulting in more definitive Jπ assignments and external R-functions consistent over the neutron energy range [80--1760 keV]; (2) background correction and processing of n-88Sr differential scattering cross section data for use with total cross section data for R-matrix analysis (3) measurement of the n-90Zr differential scattering cross section at the 200-m flight path of the ORELA