Observation of High-Momentum Protons from Limiting Target Fragmentation

J. V. Geaga; S. A. Chessin; J. Y. Grossiord; J. W. Harris; D. L. Hendrie; L. S. Schroeder; R. N. Treuhaft; K. Van Bibber

doi:10.1103/PhysRevLett.45.1993

Observation of High-Momentum Protons from Limiting Target Fragmentation

J. V. Geaga, S. A. Chessin, J. Y. Grossiord, J. W. Harris, D. L. Hendrie, L. S. Schroeder, R. N. Treuhaft, and K. Van Bibber

Phys. Rev. Lett. 45, 1993 – Published 22 December 1980

Abstract

Measurements of the inclusive distributions of protons produced at 180° in the momentum range $0.3 <~ p <~ 1.0$ GeV/c are reported. Proton, $α$ -particle, carbon, and argon beams in the range of kinetic energies $0.4 <~ T <~ 2.1$ GeV/nucleon (4.89 GeV for protons) were incident on C, Al, Cu, Sn, and Pb targets. The dependences of the cross sections on the projectile and target mass and on the incident energy are presented. Limiting behavior is found at energies above 1-2 GeV/nucleon. Features suggestive of nuclear correlations are discussed.

Received 9 April 1980

DOI:https://doi.org/10.1103/PhysRevLett.45.1993

Authors & Affiliations

J. V. Geaga^*, S. A. Chessin, J. Y. Grossiord^†, J. W. Harris, D. L. Hendrie, L. S. Schroeder, R. N. Treuhaft, and K. Van Bibber^‡

Nuclear Science Division, Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720

^*Present address: University of California, Los Angeles, Cal. 90024.
^†Present address: Institut de Physique Nucleaire de Lyon, France.
^‡Present address: Department of Physics, Stanford University, Stanford, Cal. 94305.