Determination of neutron cross sections and resonance parameters for the osmium isotopes 186, 187, and 188, 205Tl, 32S, the stable tellurium isotopes and of the 82 keV inelastic cross section for 238U. Progress report, November 1, 1979-September 30, 1980

Research relating to nuclear physics, astrophysics, and reactor technology was carried out. The nucleon-nuclear interaction was elucidated by demonstration of connection between the resonance structure revealed by high-energy-resolution neutron cross section measurements and the average nuclear potential. Measurements of the capture cross sections of the isotopes of osmium have made possible the most reliable estimate of the age of the chemical elements so far achieved. Finally, measurements were made of the 238U inelastic neutron scattering cross section near 82 keV (near the peak of the fast reactor neutron spectrum) and the capture cross sections of 101Ru, 103Rh and 105Pd isotopes, which, because of their high fission yields and large capture cross sections, are important poisons in fast reactors. This report is administrative in nature, and contains only isolated data