Coincidence Measurement of Residue, Neutrons, and Light Charged Particles in a Spallation Experiment

Abstract : Spallation reactions are important due to their applications in various fields such as astrophysics, neutron sources, accelerator driven systems, and production of radioactive beams. To improve our understanding of the spallation mechanism a complete experiment, called SPALADIN, has been proposed, which aims at measuring as exclusively as possible the final states of the spallation reaction. This experiment has been performed at GSI using the spallation reactions $^{56}$Fe+p and $^{12}$C+p in reverse kinematics at 1 A GeV. The detection of the evaporation residues is performed with the ALADIN magnet and various detectors. The detection in coincidence of all the characteristics (type and energy) of the evaporation particles (neutrons and charged ones) and of the heavy residue should permit the reconstruction of the remnant prior to evaporation in mass, charge, and excitation energy. It will then be possible to test the modelisation of the first stage of the reaction. Furthermore it will allow study of the models describing the various decay modes of the primary residue like evaporation or Fermi break-up mechanisms for the lighter systems independently of the models of the first stage of the spallation reaction.
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Submitted on : Monday, March 13, 2006 - 3:59:04 PM
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S. Piétri, T. Aumann, C.-O. Bacri, J. Benlliure, M. Böhmer, et al.. Coincidence Measurement of Residue, Neutrons, and Light Charged Particles in a Spallation Experiment. International Conference on Nuclear Data for Science and Technology, Sep 2004, Santa Fe, United States. pp.784-787, ⟨10.1063/1.1945124⟩. ⟨in2p3-00025772⟩

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