Photofission of Heavy Nuclei at Energies up to 4 GeV
- and others
Total photofission cross sections for {sup 238}U , {sup 235}U , {sup 233}U , {sup 237}Np , {sup 232}Th , and {sup nat}Pb have been measured simultaneously, using tagged photons in the energy range E{sub {gamma}}=0.17-3.84 GeV . This was the first experiment performed using the Photon Tagging Facility in Hall B at Jefferson Lab. Our results show that the photofission cross section for {sup 238}U relative to that for {sup 237}Np is about 80% over the entire energy range, implying the presence of important processes which compete with fission. If we assume that for {sup 237}Np the photofission probability is equal to unity, we observe a significant shadowing effect, starting below 1.5 GeV. (c) 2000 The American Physical Society.
- OSTI ID:
- 20216892
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 25 Vol. 84; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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Photofission of Heavy Nuclei at Energies up to 4 GeV
Photofission of Heavy Nuclei at Energies up to 4 GeV