International Conference on Nuclear Data for Science and Technology 2007
DOI: 10.1051/ndata:07759

Studies of neutron-induced light-ion production with the MEDLEY facility

U. Tippawan^{1, 2}, S. Pomp², P. Andersson², G. Ban³, R. Bevilacqua², V. Blideanu³, J. Blomgren², Ph. Eudes⁴, Y. Foucher⁴, A. Guertin⁴, F. Haddad⁴, M. Hayashi^{2, 5}, C. Lebrun³, F.R. Lecolley³, J.F. Lecolley³, T. Lefort³, L. Nilsson², N. Marie³, A. Öhrn², M. Österlund², A. Prokofiev⁶, V. Simutkin², I. Slypen⁷, P.A. Söderström² and Y. Watanabe<sup>5

1</sup>  Fast Neutron Research Facility, Chiang Mai University, P.O. Box 217, 50200 Chiang Mai, Thailand
²  Department of Neutron Research, Uppsala University, Box 525, 75120 Uppsala, Sweden
³  LPC, ENSICAEN, Université de Caen, CNRS/IN2P3, Caen, France
⁴  SUBATECH, Université de Nantes, CNRS/IN2P3, France
⁵  Department of Advanced Energy Engineering Science, Kyushu University, Japan
⁶  The Svedberg Laboratory, Uppsala University, Box 533, 75121 Uppsala, Sweden
⁷  Institut de Physique Nucléaire, Université Catholique de Louvain, Louvain-la-Neuve, Belgium

Published online: 21 May 2008

Abstract
The growing interest in applications involving high-energy neutrons (E > 20 MeV) demands high-quality experimental data on neutron-induced reactions. Such data have been measured with the MEDLEY setup at the The Svedberg Laboratory (TSL), Uppsala, Sweden. It has been used to measure differential cross sections for elastic nd scattering and double-differential cross sections for light-ion production (A ≤ 4) with targets ranging from C to U and at incident neutron energies around 96 MeV. We summarize the experimental results obtained so far and compared with theoretical reaction model calculations. A new method for correcting charged-particle spectra for thick target effects has been used for data obtained with the MEDLEY facility. The new quasi-monoenergetic neutron beam facility of TSL offers the possibility to extend these measurements up to neutron energies of 175 MeV. In January 2007, the neutron beam facility at TSL has been equipped with improved shielding and pre-collimator to reduce the background observed with MEDLEY during the first experimental campaigns at 175 MeV to an acceptable level. We present the current status of the MEDLEY facility after the shielding upgrade. We summarize also our ongoing projects including both measurements of light-ion production at 175 MeV from C to U targets and fission studies of U-238 in the energy region of 11 to 175 MeV.

© CEA 2008