A STUDY OF CHARGE-PICKUP INTERACTIONS BY (158A GeV)PbNUCLEI

Abstract

We investigate the charge-pickup cross section of 158A GeV207Pb projectiles on Bi , Pb , Cu and Al targets using CR39 nuclear track detectors. The target-detector stacks were exposed at CERN SPS beam facility. Chemical etched detectors are scanned using optical microscope, and the data in the form of etched cone heights have been collected. We have identified the beam and fragment charge states in particular charge-pickup (Z = 83) by the Pb ions using the etched cone heights. Dependence of charge-pickup cross section of 158A GeV207Pb projectiles on the target mass number is described and results are compared to similar measurements found in the literature.