Measurement of a Complete Set of Nuclides, Cross Sections, and Kinetic Energies in Spallation of U2381AGeV with Protons

P. Armbruster, J. Benlliure, M. Bernas, A. Boudard, E. Casarejos, S. Czajkowski, T. Enqvist, S. Leray, P. Napolitani, J. Pereira, F. Rejmund, M.-V. Ricciardi, K.-H. Schmidt, C. Stéphan, J. Taieb, L. Tassan-Got, and C. Volant
Phys. Rev. Lett. 93, 212701 – Published 15 November 2004

Abstract

Spallation residues and fission fragments from 1AGeVU238 projectiles irradiating a liquid hydrogen target were investigated by using the fragment separator at GSI for magnetic selection of reaction products including ray-tracing, energy-loss and time-of-flight techniques. The longitudinal-momentum spectra of identified fragments were analyzed, and evaporation residues and fission fragments could be separated. For 1385 nuclides, production cross sections down to values of 10μb with a mean accuracy of 15%, velocities in the uranium rest frame and kinetic energies were determined. In the reaction all elements from uranium to nitrogen were found, each with a large number of isotopes.

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  • Received 28 June 2004

DOI:https://doi.org/10.1103/PhysRevLett.93.212701

©2004 American Physical Society

Authors & Affiliations

P. Armbruster1, J. Benlliure1,2, M. Bernas3, A. Boudard4, E. Casarejos2, S. Czajkowski5, T. Enqvist1,*, S. Leray4, P. Napolitani1,3, J. Pereira2, F. Rejmund1,3, M.-V. Ricciardi1, K.-H. Schmidt1, C. Stéphan3, J. Taieb1,3,†, L. Tassan-Got3, and C. Volant4

  • 1Gesellschaft für Schwerionenforschung, Planckstraße 1, 64291 Darmstadt, Germany
  • 2Universidad de Santiago de Compostela, 15706 Santiago de Compostela, Spain
  • 3Institut de Physique Nucléaire, BP 1, 91406 Orsay Cedex, France
  • 4DAPNIA/SPhN, CEA/Saclay, 91191 Gif sur Yvette Cedex, France
  • 5CEN Bordeaux-Gradignan, Le Haut-Vigneau, 33175 Gradignan Cedex, France

  • *Present address: CUPP-project P. O. Box 22 FIN-86801 Pyhäsalmi, Finland
  • Present address: CEA/Saclay DM2S/SERMA/LENR, 91191 Gif/Yvette CEDEX, France

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Vol. 93, Iss. 21 — 19 November 2004

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