Open Access
ND 2007
Article Number 268
Number of page(s) 4
Section Intermediate energy experiments
Published online 17 June 2008
International Conference on Nuclear Data for Science and Technology 2007
DOI: 10.1051/ndata:07415

Measurement of 232Th(n,5nγ) cross sections from 29 to 42 MeV

M. Kerveno1, R. Nolte2, P. Baumann1, Ph. Dessagne1, E. Jericha3, S. Jokic4, S. Lukic5, J.P. Meulders6, A. Nachab7, A. Pavlik8, M. Reginatto2 and G. Rudolf1

1  Institut Pluridisciplinaire Hubert Curien, Département Recherche Subatomique, 67037 Strasbourg, France
2  Physikalisch-Technische Bundesanstalt, 38023 Braunschweig, Germany
3  Atominstitut der Österreichischen Universitäten, Technische Universität Wien, 1020 Wien, Austria
4  Vinca Institute of Nuclear Sciences, Belgrade 11001, Serbia
5  GSI, 64291 Darmstadt, Germany
6  Institut de Physique Nucléaire, 1348 Louvain-la-Neuve, Belgium
7  Centre d'Études Nucléaires de Bordeaux Gradignan, 33175 Gradignan, France
8  Fakultät für Physik, Universität Wien, 1090 Wien, Austria

Published online: 21 May 2008

The excitation function of the reaction 232Th(n,5nγ)228Th from 29 to 42 MeV has been measured for the first time at the quasi-monoenergetic neutron beam of the UCL cyclotron CYCLONE employing the 7Li(p,n) source reaction. Taking advantage of the good energy resolution of the planar High Purity Germanium (HPGe) detectors, prompt γ-ray spectroscopy was used to detect the γ rays resulting from the decay of excited states of nuclei created by the (n,xn) reactions. The neutron beam was characterized by a combination of time of flight measurements carried out using a liquid scintillation detector and a 238U fission ionization chamber and fluence measurements carried out using a proton recoil telescope. The preliminary results are compared with calculations performed using the TALYS-0.72 code.

© CEA 2008