Some reaction cross section for molybdenum in a fission spectrum, Radiochim.

The thermal cross-section is averaged using a Maxwellian spectrum and the fast cross section is averaged using the uranium-235 fission spectrum.

The VIPER reactor provides threat level fission spectrum neutron pulses and is accompanied by technical advice in conducting trials in full threat' environments.

Isotopic abundances of the elements xenon, cesium, barium, cerium, neodymium, and samarium formed in the fast (fission spectrum) neutron fission of 238U have been measured using the mass spectrometric method.