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First experimental prompt $\gamma$-ray spectra in fast-neutron-induced fission of $^{238}\mathrm{U}$
- Source :
- Phys.Rev.C, Phys.Rev.C, 2018, 98 (5), pp.054604. ⟨10.1103/PhysRevC.98.054604⟩, Physical Review C, Physical Review C, American Physical Society, 2018, 98 (5), pp.054604. ⟨10.1103/PhysRevC.98.054604⟩
- Publication Year :
- 2018
- Publisher :
- HAL CCSD, 2018.
-
Abstract
- International audience; The knowledge of prompt fission γ-ray emission has been of major interest in reactor physics for a few years. Only few experimental spectra were published until now for fast-neutron-induced fission, and measurements would be also valuable in order to improve our understanding of the fission process. A simple experimental method was used to measure the first prompt fission γ-ray spectra up to 10 MeV. In this approach, the γ rays are measured with a bismuth germanate (BGO) detector which offers two significant advantages with respect to other γ-ray detectors: a high peak-to-total ratio and a high efficiency. The prompt fission neutrons are rejected by the time-of-flight technique between the BGO detector and a fission trigger given by a fission chamber. Prompt fission γ-ray spectra were measured for 1.6 ± 0.1, 5.1 ± 0.2 and 15.0 ± 0.6 MeV neutron-induced fission on U238 at the CEA, DAM, DIF Van de Graaff accelerator; average multiplicity and mean photon energy per fission were deduced from the spectra.
Details
- Language :
- English
- ISSN :
- 24699985 and 24699993
- Database :
- OpenAIRE
- Journal :
- Phys.Rev.C, Phys.Rev.C, 2018, 98 (5), pp.054604. ⟨10.1103/PhysRevC.98.054604⟩, Physical Review C, Physical Review C, American Physical Society, 2018, 98 (5), pp.054604. ⟨10.1103/PhysRevC.98.054604⟩
- Accession number :
- edsair.dedup.wf.001..611c9624524811f3bce30c423ede6f61