Title: Gamma Production Cross Sections for Inelastic Scattering and (n,2n) Reactions
Authors: PLOMPEN ARJAN
Citation: Workshop Proceedings - Perspectives on Nuclear Data for the Next Decade p. 151-156
Publisher: OECD-NEA OECD 2006. NEA N° 6121
Publication Year: 2007
JRC N°: JRC36455
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC36455
Type: Contributions to Conferences
Abstract: In recent years it was shown that precise measurements of gamma-production cross sections for gammas associated with inelastics scattering and (n,xn) reactions can be performed at a white spectrum time-of-flight facility. This first of all leads to continuous energy excitation curves characteristic of the decay of excited states in the residual nuclei. With enriched samples the different reaction channels leading to the same residual nucleus are disentangled. At GELINA modern data-acquisition techniques have allowed access to the range from threshold to 20 MeV with excellent incident energy resolution (1 keV at 1 MeV, 36 keV at 10 MeV). Since typically for inelastic scattering excitation curves are measured of the decay of the first 15-20 excited levels, these experiments provide detailed information for the validation and optimisation of nuclear model calculations. The relevant aspects are the optical model, direct and pre-equilibrium reactions, level densities, the discrete level and decay scheme and gamma-ray strength functions. Examples will be shown for 209Bi, 207Pb and 208Pb.
JRC Institute:Institute for Reference Materials and Measurements

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