Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published July 1995 | Published
Journal Article Open

Charge-changing fragmentation of 10.6 GeV/nucleon ^(197)Au nuclei

Abstract

We have measured the charge-changing cross sections of 10.6 GeV/nucleon ^(197)Au nuclei interacting in targets of CH2 (polyethylene), C, Al, Cu, Sn, and Pb. Cross sections for H are calculated from those measured in C and CH_2. The total charge-changing cross sections are higher than those measured at energies of ≤1 GeV/nucleon. The measured cross sections for the heavier targets are somewhat larger than those predicted by a model based on data taken at lower energies with lighter targets. Partial charge-changing cross sections for the production of fragments from the incident Au projectiles were measured for charge changes (ΔZ) from ΔZ=+1, _(80)Hg, down to approximately ΔZ=-29, _(50)Sn. In comparison to lower energy measurements, these partial cross sections are found to be smaller for small ΔZ and larger or the same for large ΔZ. The H partial cross sections are found to follow a power law in ΔZ similar to that for heavier targets, instead of the exponential form observed at lower energies. Factorization is found to hold for all partial cross sections with ΔZ greater than two. In the heavier targets, the cross sections for one and two proton removal have significant contributions from electromagnetic dissociation. The electromagnetic dissociation contribution to the total cross section is derived and found to be relatively small, but with a strong dependence on the charge of the target nuclei of the form Z__T^(1.75±0.01).

Additional Information

© 1995 The American Physical Society. (Received 27 December 1994) We thank E. C. Stone and B. W. Gauld of Caltech and Dana Beavis and the staff of Brookhaven National Laboratory. We also thank W. Heinrich for communication of results prior to publication. This work was supported in part by NASA and DOE.

Attached Files

Published - PhysRevC.52.334.pdf

Files

PhysRevC.52.334.pdf
Files (632.5 kB)
Name Size Download all
md5:ec77f04ce4fb98578da6b77ad127a190
632.5 kB Preview Download

Additional details

Created:
August 20, 2023
Modified:
October 26, 2023