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On the search for a (n,f) cross-section reference at intermediate energies
Universidade de Santiago de Compostela (USC), Santiago de Compostela, Spain.
Istituto Nazionale di Fisica Nucleare, Bologna, Italy.
Istituto Nazionale di Fisica Nucleare, Bologna, Italy; Agenzia Nazionale per le Nuove Tecnologie, Bologna, Italy.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.ORCID iD: 0000-0002-9858-3341
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2017 (English)In: EPJ Web of Conferences, ISSN 2101-6275, E-ISSN 2100-014X, Vol. 146, article id 02032Article in journal (Refereed) Published
Abstract [en]

The (n,f) cross-sections proposed as references by the IAEA for 235U, 238U and 209Bi are compared with a new analysis that combines the measurements performed at CERN-n_TOF of their cross-section ratios with new calculations done using Monte Carlo codes based on phenomenological models INCL+ +, GEMINI+ +, and ABLA07. The calculations are cross-checked with those for the (p,f) reactions, where experimental values are available. We have evaluated in this way the (n,f) cross sections for 238U, 235U and 209Bi, in the intermediate energy region going from 190 MeV to 2 GeV. Our results definitively discard the JENDL/HE-2007 evaluations above 300 MeV, falling inside the confidence corridor proposed by IAEA but for the points around 300–400 MeV where a discrepancy is to be noticed.

Place, publisher, year, edition, pages
2017. Vol. 146, article id 02032
National Category
Subatomic Physics
Identifiers
URN: urn:nbn:se:uu:diva-329739DOI: 10.1051/epjconf/201714602032OAI: oai:DiVA.org:uu-329739DiVA, id: diva2:1142681
Available from: 2017-09-20 Created: 2017-09-20 Last updated: 2018-01-17Bibliographically approved

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