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Enhanced backward emission of heavy fragments in high-energy proton-nucleus collisions

Journal Article · · Phys. Rev. C; (United States)
The conventional description of high energy proton-nucleus collisions in terms of an intranuclear cascade and compound nuclear decay (the two-step model) breaks down at projectile energies E/sub p/>10 GeV. Unusual backward enhancements are found in the angular distribution of heavy fragments (Sc, Cu) from uranium targets. This effect is explained in a fast breakup model of deep spallation/cleavage processes. The observed backward emission originates in the competition between (backward-directed) Coulomb repulsion and (forward-directed) momentum components from recoiling nucleons.
Research Organization:
Institut fuer Theoretische Physik der Universitat Heidelberg, 6900 Heidelberg, Federal Republic of Germany
OSTI ID:
6017165
Journal Information:
Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 27:5; ISSN PRVCA
Country of Publication:
United States
Language:
English