Open Access
ND 2007
Article Number 280
Number of page(s) 4
Section Spallation measurements
Published online 17 June 2008
International Conference on Nuclear Data for Science and Technology 2007
DOI: 10.1051/ndata:07328

Coincidence measurement of the reaction 56Fe+p at 1 GeV per nucleon with SPALADIN

J.-É. Ducret1, É. Le Gentil1, T. Aumann2, C.-O. Bacri3, J. Benlliure4, S. Bianchin2, M. Böhmer5, A. Boudard1, E. Casarejos4, L. Donadille1, 6, M. Fernandez-Ordoñez4, R. Gernhäuser5, H. Johansson2, K. Kezzar1, T. Kurtukian-Nieto4, A. Lafriakh1, F. Lavaud1, 7, A. Le Fèvre2, S. Leray1, J. Lühning2, J. Lukasik2, U. Lynen2, W.F.J. Müller2, S. Pietri1, 8, F. Rejmund9, C. Schwarz2, C. Sfienti2, H. Simon2, W. Trautmann2, C. Volant1 and O. Yordanov2

1  Service de Physique Nucléaire, DSM/DAPNIA, CEA Saclay, 91191 Gif-sur-Yvette, France
2  GSI, Planckstraße 1, 64291 Darmstadt, Germany
3  Institut de Physique Nucléaire d'Orsay, CNRS/IN2P3, 91406 Orsay, France
4  Physics Department, Universidad de Santiago de Compostela, 15706 Santiago de Compostela, Spain
5  Teschnische Universität München, Physik Department E12, 85748 Garching, Germany
6  IRSN/LDRI, 77 avenue du Général de Gaulle, 92140 Clamart, France
7  EDF R&D/SINETICS, 1 avenue du Général de Gaulle, 92141 Clamart, France
8  Departement of Physics, University of Surrey, Guildford, GU2 7XH Surrey, UK
9  GANIL, CEA & CNRS/IN2P3, BP. 5027, 14076 Caen, France

Published online: 21 May 2008

The SPALADIN experiment using the inverse-kinematics technique where the heavy-ion beam is sent onto a liquid-hydrogen target has been carried out at GSI (Darmstadt, Germany) in order to study the spallation of 56Fe. On an event-by-event basis, spallation residues, light-charged fragments and neutrons have been detected in coincidence. The set-up is based on a large aperture magnet (ALADiN) equipped with a time-projection chamber (TPC), a hodoscope and a high-efficiency neutron detector. The combination of the inverse kinematics and of the acceptance of the set-up focuses the measurement on the low centre-of-mass energy fragments of the reaction essentially originating from the de-excitation of the prefragment formed at the end of the intranuclear cascade. Data taken at 1 GeV per nucleon have been analysed. Preliminary results on coincidence observables are shown and compared to theoretical calculations. We emphasize on the identification of different types of multi-fragment final states which correspond to different decay channels and allow to probe different decay mechanisms.

© CEA 2008