EFFECTS DUE TO MULTIPLE SCATTERING OF FISSION FRAGMENTS IN LAYERS OF FISSIONING MATERIAL

摘要

Computer simulation with the SRIM program is used to investigate the passage of fragments from ~(235)U fission by thermal neutrons through 50-400 μg/cm~2 thick uranium layers. The calculations are performed in the two-fragment approximation: light ~(97)Mo and heavy ~(139)Ba. The energy spectra of the fission fragments emanating from the layer are calculated and the effects due to multiple scattering of the fragments in thin layers are estimated.