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New prompt fission gamma-ray spectral data and its implication on present evaluated nuclear data files
Akademin för Naturvetenskap och Teknik, Örebro Universitet, Örebro, Sweden; Fundamental Fysik, Chalmers Tekniska Högskola, Göteborg, Sweden.
KFKI Atomic Energy Research Institute, Budapest, Hungary.
Fundamental Fysik, Chalmers Tekniska Högskola, Göteborg, Sweden; European Commission, DG Joint Research Centre (IRMM), Geel, Belgium.
European Commission, DG Joint Research Centre (IRMM), Geel, Belgium.
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2013 (English)In: Physics Procedia, ISSN 1875-3892, E-ISSN 1875-3892, Vol. 47, p. 156-165Article in journal (Refereed) Published
Abstract [en]

In this paper we report on new spectral prompt gamma-ray measurements from the spontaneous fission of Cf-252 and thermal neutron-induced fission of U-236*. In both experiments, fission of U-236*. In both experiments, gamma-ray multiplicities, average and total gamma-energies were extracted. gamma-ray multiplicities, average and total.-energies were extracted. Apart from one recent measurement on Cf-252, about four decades have passed since the last dedicated experiments were reported in literature. Hence, there was a need for a revision, not only with respect to high priority nuclear data requests by the Nuclear Energy Agency (NEA). In the first mentioned experiment we have measured prompt fission gamma-rays with both cerium-doped LaBr3 and CeBr3 scintillation detectors, which both exhibit excellent timing and good energy resolution. The results from both detectors are in excellent agreement with each other and confirm the historical data. In the experiment on U-235(n(th), f) we employed cerium-doped LaCl3 detectors, together with the lanthanum bromide detectors mentioned above. Even here the first results indicate a good agreement with data from the early 1970' s. They are also in accordance with data in evaluated libraries like ENDF/B-VII.0, while this is not the case for Cf-252(SF). Hence, here an update is strongly recommended.

Place, publisher, year, edition, pages
2013. Vol. 47, p. 156-165
Keywords [en]
Prompt fission gamma-rays, total gamma-ray energy, prompt gamma-ray multiplicity, Generation IV, nuclear energy, lanthanum bromide, cerium bromide, lanthanum chloride, scintillation detector, Cf-252(SF), U-235(n(th, )f)
National Category
Physical Sciences
Research subject
Physics
Identifiers
URN: urn:nbn:se:oru:diva-40190DOI: 10.1016/j.phpro.2013.06.023ISI: 000345234700022Scopus ID: 2-s2.0-84902241246OAI: oai:DiVA.org:oru-40190DiVA, id: diva2:776358
Conference
Scientific Workshop on Nuclear Fission Dynamics and the Emission of Prompt Neutrons and Gamma Rays, NOV 28-30, 2012, Biarritz, FRANCE
Available from: 2015-01-07 Created: 2015-01-07 Last updated: 2018-05-22Bibliographically approved

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Oberstedt, Andreas

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