Title: Measurement of Neutron-Induced Reaction Cross Sections on Ni, Zr, Ta, and W Isotopes with Activation Technique
Authors: SEMKOVA ValentinaMOENS AndrePLOMPEN ArjanJAIME TORNIN Ricardo
Citation: Proceedings of the 1st International Workshop on Accelerator Radiation Induced Activation - ARIA2008 p. 75-78
Publisher: Paul Scherrer Institut
Publication Year: 2009
JRC Publication N°: JRC50473
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC50473
Type: Contributions to Conferences
Abstract: Neutron-induced reaction cross sections on different Ni, Zr, Ta, and W isotopes were determined at the Institute for Reference Materials and Measurements, Geel by the activation method. The irradiations were carried out at the 7 MV Van de Graaff accelerator. Quasi mono-energetic neutrons with energies between 14 and 21 MeV were produced via the 3H(d,n)4He reaction (Ed=1,2,3, and 4 MeV). Both natural and isotopicaly enriched samples were used in order to distinguish between activities produced by different reactions leading to the same end product. The radioactivity of the samples was determined by gamma-ray spectrometry. Monte Carlo simulations of the full-energy peak and total efficiencies of a coaxial HPGe detector were performed with the MCNP/MCNPX code in order to achieve higher geometry flexibility and better accuracy. All reaction cross sections measured in the present work are referenced to the 27Al(n,a)24Na standard reaction cross sections. The measurement results are compared with work by other authors, current evaluated data files and new model calculations.
JRC Institute:Institute for Reference Materials and Measurements

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