Fragment properties from fission of actinide nuclei induced by 6–10 MeV bremsstrahlungI

Abstract

Abstract Experiments to investigate the photon-induced fission of actinide nuclei at excitation energies in the vicinity of the fission barrier are carried out at the superconducting Darmstadt linear electron accelerator S-DALINAC. A twin–Frisch-grid ionization chamber is used to deduce mass, total kinetic energy, and angular distributions of the fission fragments. First experiments on 238 U and 234 U have shown that the experimental setup provides excellent conditions for investigating low-energy bremsstrahlung induced fission. Further experiments on 234 U and 232 Th are currently in progress. In this contribution results from the first experiment on fission fragment mass and total kinetic energy distributions from 234,238 U are presented along with preliminary data from an on-going investigation of angular distributions from 234 U(γ, f)