Title: Evaluation of cross sections for neutron interactions with 238U in the energy region between 5 keV and 150 keV
Authors: SIRAKOV I.CAPOTE R.GRITZAY OLENAKIM H. I.KOPECKY STEFANKOS BORPARADELA DOBARRO CARLOSPRONYAEV V. G.SCHILLEBEECKX PETERTRKOV ANDREJ
Citation: EUROPEAN PHYSICAL JOURNAL A vol. 53 no. 199
Publisher: SPRINGER
Publication Year: 2017
JRC N°: JRC107886
ISSN: 1434-6001
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC107886
DOI: 10.1140/epja/i2017-12394-2
Type: Articles in periodicals and books
Abstract: Cross sections for neutron interactions with 238U in the energy region from 5keV to 150keV have been evaluated. Average total and capture cross sections have been derived from a least squares analysis using experimental data reported in the literature. The resulting cross sections have been parameterised in terms of average resonance parameters maintaining full consistency with results of optical model calculations by using a dispersive coupled channel optical model potential. The average compound partial cross sections have been expressed in terms of transmission coefficients by applying the Hauser-Feshbach statistical reaction theory including width-fluctuations. A generalized single-level representation compatible with the energy-dependent options of the ENDF-6 format has been applied using standard boundary conditions. The results have been transferred into a full ENDF-6 compatible data file.
JRC Directorate:Nuclear Safety and Security

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