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Title: Cross section measurements for neutron inelastic scattering and the ( n ,   2 n γ ) reaction on Pb 206

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.
Authors:
 [1] ;  [2] ;  [1] ;  [3] ;  [4] ;  [3] ;  [5] ;  [6] ;  [7] ;  [7] ;  [3]
  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)
Publication Date:
Grant/Contract Number:
AC05-00OR22725; 516520; FP7-605203
Type:
Accepted Manuscript
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 91; Journal Issue: 6; Journal ID: ISSN 0556-2813
Publisher:
American Physical Society (APS)
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
OSTI Identifier:
1265878