Cross section measurements for neutron inelastic scattering and the $(n, 2n\gamma )$ reaction on ${}^{206}\mathrm{Pb}$

Journal Article · Tue Jun 30 00:00:00 EDT 2015 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.91.064618· OSTI ID:1265878

Negret, A. ^[1]; Mihailescu, L. C. ^[2]; Borcea, C. ^[1]; Dessagne, Ph. ^[3]; Guber, K. H. ^[4]; Kerveno, M. ^[3]; Koning, A. J. ^[5]; Olacel, A. ^[6]; Plompen, A. J. M. ^[7]; Rouki, C. ^[7]; Rudolf, G. ^[3]

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1. Horia Hulubei National Inst. of Physics and Nuclear Engineering, Magurele (Romania)
2. Horia Hulubei National Inst. of Physics and Nuclear Engineering, Magurele (Romania); European Commission, Geel (Belgium)
3. Univ. of Strasbourg (France); CNRS, Strasbourg (France)
4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
5. Nuclear Research Group Petten, Magurele (Romania)
6. Horia Hulubei National Inst. of Physics and Nuclear Engineering, Magurele (Romania); Univ. of Bucharest, Magurele (Romania)
7. European Commission, Geel (Belgium)

We measured excitation functions for γ production associated with the neutron inelastic scattering and the (n, 2n) reactions on ²⁰⁶Pb 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. Moreover, the neutron flux was determined with a ²³⁵U 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 ²⁰⁶Pb 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. Finally, 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.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE
• Grant/Contract Number: AC05-00OR22725; 516520; FP7-605203
• OSTI ID: 1265878
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 91, Issue 6; ISSN 0556-2813
• Publisher: American Physical Society (APS)
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS