Fission cross section and fragment angular distribution for fast neutron-induced fission of U234

摘要: Abstract The neutron-induced fission cross section for U 234 has been measured to 4 MeV neutron energy. angular distribution of the fragments investigated between bombarding energies 0.4 and 3.8 MeV. shape curve is explained in terms suggestion Wheeler, that inelastic scattering competes with an extent dependent part on available levels scattering. Levels above 790 keV are known exist, serve depress 850 1050 analysed Bohr's theory through discrete a collective nature thought exist near saddle point. This analysis points K -band structure compound nucleus 235∗ point deformation 1 2+ , 3 2− ground each band separated by order few hundred keV. For 500, estimates made which contributes fission.