PHOTODISINTEGRATION OF U$sup 23$$sup 5$

The photodisintegration of U/sup 235/ was studied, using nearly monochromatic photons obtained from the annihilation in flight of fast positrons. The partial cross sections sigma ( gamma ,F), sigma ( gamma ,n), and O( gamma ,2n) were determined. Integrated cross sections for these reactions were found to be 1.07, 1.00, and 1.49 Mev. by respectively. Structure in the giant resonance of the compound-nucleus-formation cross section was observed and from this a quadrupole moment of 12.8 plus or minus 1.3 b was found. An energy dependence in the quantity GAMMA /sub n// GAMMA /sub f/ was observed. (auth)