Actinide Neutron Capture Cross Sections

Details Actinide Neutron Capture Cross Sections Actinide Neutron Capture Cross Sections

Jun 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003cgrs.conf..757m&link_type=abstract

CAPTURE GAMMA-RAY SPECTROSCOPY AND RELATED TOPICS. Proceedings of the Eleventh International Symposium. Held 2-6 September 2002

Computer Science

Scientific paper

Neutron capture cross section data of 238-U(n,g) and 232-Th(n,g) are reproduced in a statistical model of compound nucleus reactions from a few keV up to 6 MeV. Calculated capture cross section in keV energy region is dependent on radiative strength function value S. Above 150 keV calculated cross section is defined by the energy dependence of radiative strength function and inelastic scattering/fission competition. Energy dependence of S is defined mainly by the level density of compound nucleus at excitation energies below three-quasi-particle excitation threshold. For incident neutron energies higher than 1 MeV, the (n,n'g) reaction competition to the "true" capture (n,gg) reaction cross section defines the capture cross section drop above 1 MeV.

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