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Phys Rev Lett. 2004 Nov 19;93(21):212701. doi: 10.1103/PhysRevLett.93.212701. Epub 2004 Nov 15.

Measurement of a complete set of nuclides, cross sections, and kinetic energies in spallation of 238U 1A GeV with protons.

Physical review letters

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, C Volant

Affiliations

  1. Gesellschaft für Schwerionenforschung, Planckstrasse 1, 64291 Darmstadt, Germany.

PMID: 15601002 DOI: 10.1103/PhysRevLett.93.212701

Abstract

Spallation residues and fission fragments from 1A GeV 238U 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 10 microb 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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