1993•Physical Review ARequires access
Relativistic electron- and proton-impact ionization of highly stripped heavy ions determined from projectile-electron loss in H2 and He
B. Feinberg, Harvey Gould, W. E. Meyerhof, A. Belkacem, H.-P. Hülskötter, J. Alonso, Lev Blumenfeld, E. Dillard, Noel A. Guardala, G. F. Krebs, M. A. McMahan, M. J. Rhoades-Brown, B. Rude, J.E. Schweppe, D. W. Spooner, K. Street, P. Thieberger, H. E. Wegner
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Abstract
We show that electron- and proton-impact ionization cross sections for highly stripped heavy ions can be deduced from the projectile-electron-loss cross sections determined by collisions with a ${\mathrm{H}}_{2}$ and a He target. We measure electron loss for 100- and 380-MeV/u ${\mathrm{Au}}^{52+}$, and 405-MeV/u ${\mathrm{U}}^{86+}$ in ${\mathrm{H}}_{2}$ and He targets, and extract the electron- and proton-impact ionization cross sections. Our results are compared with calculations and with channeling experiments.