INTERACTIONS OF RELATIVISTIC NEON TO NICKEL PROJECTILES IN HYDROGEN, ELEMENTAL PRODUCTION CROSS-SECTIONS

This paper reports the elemental production cross sections for 17 proj ectile-energy combinations with energies between 338 and 894 MeV/nucle on interacting in a liquid hydrogen target. These results were obtaine d from two runs at the LBL Bevalac using projectiles ranging from Ne-2 2 to Ni-58. Cross sections were measured for all fragment elements wit h charges greater than or equal to half the charge of the projectile. The results show that, over the energy and ion range investigated, the general decrease in cross section with decreasing fragment charge is strongly modified by the isospin of the projectile ion. Significant ad ditional modifications of the cross sections due to the internal struc ture of the nucleus have also been seen. These include both pairing an d shell effects. Differences in the cross sections due to the differin g energies of the projectile are also considerable.