Cross section measurements for neutron inelastic scattering and the (n, 2nγ) reaction on Pb 206 CROSS SECTION MEASUREMENTS for NEUTRON ... A. NEGRET et al.

A. Negret, L. C. Mihailescu, C. Borcea, Ph Dessagne, K. H. Guber, M. Kerveno, A. J. Koning, A. Olacel, A. J.M. Plompen, C. Rouki, G. Rudolf

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Abstract

Excitation functions for γ production associated with the neutron inelastic scattering and the (n, 2n) reactions on Pb206 were measured from threshold up to 18 MeV for about 40 transitions. Two independent measurements were performed using different samples and acquisition systems to check consistency of the results. The neutron flux was determined with a U235 fission chamber and a procedure that were validated against a fluence standard. For incident energy higher than the threshold for the first excited level and up to 3.5 MeV, estimates are provided for the total inelastic and level cross sections by combining the present γ production cross sections with the level and decay data of Pb206 reported in the literature. The uncertainty common to all incident energies is 3.0% allowing overall uncertainties from 3.3% to 30% depending on transition and neutron energy. The present data agree well with earlier work, but significantly expand the experimental database while comparisons with model calculations using the talys reaction code show good agreement over the full energy range.

Original languageEnglish
Article number064618
JournalPhysical Review C - Nuclear Physics
Volume91
Issue number6
DOIs
StatePublished - Jun 30 2015

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