International Conference on Nuclear Data for Science and Technology 2007
DOI: 10.1051/ndata:07329

High resolution neutron (n,xn) cross-section measurements for ^206,207,208Pb and ²⁰⁹Bi from threshold up to 20 MeV

L.C. Mihailescu¹, P. Baumann², C. Borcea¹, P. Dessagne², E. Jericha³, M. Kerveno², S. Lukic², A.J. Koning⁴, A. Pavlik⁵, A.J.M. Plompen¹ and G. Rudolf<sup>2

1</sup>  European Commission, Joint Research Center, Institute for Reference Materials and Measurements, 2440 Geel, Belgium
²  IReS, IN2P3, Strasbourg, France
³  Technische Universität Wien, Wien, Austria
⁴  Nuclear Research Group Petten, Westerduinweg 3, 1755 ZG Petten, The Netherlands
⁵  Universität Wien, 1010 Wien, Austria

catalin.borcea@ec.europa.eu

Published online: 21 May 2008

Abstract
Gamma production cross sections for neutron inelastic scattering reactions (n,xn) (x = 1,2,3) were measured for three different highly enriched targets of ²⁰⁶Pb, ²⁰⁷Pb and ²⁰⁸Pb and for ²⁰⁹Bi. Using the known decay schemes of these isotopes, the total inelastic cross sections and level inelastic cross sections were determined. The measurements are continuous in neutron energy and cover a wide interval (from threshold energy up to about 20 MeV). The experiments were performed at the GELINA white neutron source, at the 200 m flight path station with a time resolution of 8 ns, resulting in an unprecedented neutron energy resolution of 1.1 keV at 1 MeV (36 keV at 10 MeV).

© CEA 2008