Systematics of isotopic production cross sections from interactions of relativistic [Formula Presented] in hydrogen

C. X. Chen, Louisiana State University
S. Albergo, Istituto Nazionale di Fisica Nucleare, Sezione di Catania
Z. Caccia, Istituto Nazionale di Fisica Nucleare, Sezione di Catania
S. Costa, Istituto Nazionale di Fisica Nucleare, Sezione di Catania
H. J. Crawford, Space Sciences Laboratory at UC Berkeley
M. Cronqvist, Space Sciences Laboratory at UC Berkeley
J. Engelage, Space Sciences Laboratory at UC Berkeley
L. Greiner, Space Sciences Laboratory at UC Berkeley
T. G. Guzik, Louisiana State University
A. Insolia, Istituto Nazionale di Fisica Nucleare, Sezione di Catania
C. N. Knott, University of Minnesota Twin Cities
P. J. Lindstrom, Lawrence Berkeley National Laboratory
M. McMahon, Louisiana State University
J. W. Mitchell, NASA Goddard Space Flight Center
R. Potenza, Istituto Nazionale di Fisica Nucleare, Sezione di Catania
G. V. Russo, Istituto Nazionale di Fisica Nucleare, Sezione di Catania
A. Soutoul, Département d‘Astrophysique
O. Testard, Département d‘Astrophysique
C. E. Tull, Lawrence Berkeley National Laboratory
C. Tuvé, Istituto Nazionale di Fisica Nucleare, Sezione di Catania
C. J. Waddington, University of Minnesota Twin Cities
W. R. Webber, New Mexico State University
J. P. Wefel, Louisiana State University

Abstract

The isotopic production cross sections for [Formula Presented] projectiles at 357, 565, and 763 MeV/nucleon interacting in a liquid hydrogen target have been measured by the Transport Collaboration at the LBL HISS facility. The systematics of these cross sections are studied, and the results indicate that nuclear structure effects are present in the isotope production process during the relativistic collisions. The newly measured cross sections are also compared with those predicted by semiempirical and parametric formulas, but the predictions do not fully describe the systematics such as the energy dependence. The consequences of the cross section systematics in galactic cosmic ray studies are also discussed. © 1997 The American Physical Society.