NEUTRON NONELASTIC CROSS SECTIONS AT 21.0, 25.5, AND 29.2 Mev

Neutron nonelastic collision cross sections for eleven elements were measured in the energy range 21 to 19 Mev. Corrections were applied to the data by means of a UNIVAC calculation. Sinoe no experimental neutron angular distributions are available in this energy region, optical-model calculations were used for the corrosion problem. In general the cross sections it 25 Mev are 10 to 20% lower than at 14 Mev. (auth)