Charged-particle pseudorapidity (rapidity) distribution in nucleus-nucleuscollisions at alternating-gradient synchrotron energy

The charged-particle pseudorapidity (rapidity) distributions in nucleus-nuc leus collisions at the alternating-gradient synchrotron energy (11-15A GeV) have been described by the thermalized cylinder picture. The calculated re sults are in agreement with the experimental data of the reactions Si-28 Au, Ag, Cu, and Al at 14.6A GeV/c bombarding energy. It is shown that the t arget stopping power (the leading participant target nucleon rapidity shift with respect to the projectile) increases with the target size, and the pr ojectile penetrating power (the leading participant projectile nucleon rapi dity shift with respect to the target) decreases with the increasing of tar get size.