EMISSION PROBABILITIES OF PROMPT NEUTRONS FROM SPONTANEOUS AND NEUTRON- INDUCED FISSION
A method is developed for using the relatively easily measured fission parameters, together with the mass equation of fission and the evaporation model of the nucleus, to determine the emission probabilities of the fission neutrons. The distribution of the kinetic energies of the fragment pairs enters into these calculations in a sensitive manner. Neutron emission probabilities are computed for the fission of the compound nuclei U/sup 234/ U/sup 236/, and Pu/sup 240/, for which cases reasonably adequate data on the fragment pair energies are available. Although the corresponding data for the fission of the compound nuclei Th/sup 233/, U/sup 238/, and U/sup 239/ are considerably poorer, neutron emission probabilities are also computed. The calculated results from this method are in good agreement with direct measurements of fission neutrons. (auth)
- Research Organization:
- Los Alamos Scientific Lab., N. Mex.
- DOE Contract Number:
- W-7405-ENG-36
- NSA Number:
- NSA-14-017347
- OSTI ID:
- 4151283
- Report Number(s):
- LA-1863
- Country of Publication:
- United States
- Language:
- English
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