Multiple Ionization of Rare Gases by H⁺ and He⁺ Impact

Authors

R. D. DuBois, Pacz'Jc Northwest Laboratory, Richland, Washington
L. H. Toburen, Pacz'Jc Northwest Laboratory, Richland, Washington
M. Eugene Rudd, University of Nebraska - LincolnFollow

Date of this Version

1984

Comments

Published in Physical Review A Volume 29, Number 1, January 1984. Copyright © American Physical Society; used by permission.

Abstract

Absolute cross sections for multiple ionization (σ_q)of He, Ne, Ar, and Kr are presented for proton-impact energies between 10 and 4000 keV. Charge states up to 6 + are observed for Kr. The results are obtained by measuring relative yields of multiply charged ions with a time-of-flight spectrometer and normalizing to total ion-production cross sections σ_T= ∑qσ_q. The results are compared with existing proton- and electron-impact data. Relative multiple- to single-ionization cross-section ratios are also presented for He⁺ impact.