Electron-impact ionization in the xenon isonuclear sequence

Journal Article · Sun Apr 01 04:00:00 EST 1984 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.29.1729· OSTI ID:7051104

Griffin, D C; Bottcher, C; Pindzola, M S; Younger, S M; Gregory, D C; Crandall, D H

The distorted-wave approximation and electron-ion crossed beams have been employed to complete a theoretical and experimental study of electron-impact ionization along the Xe isonuclear sequence. Experimental results are given for Xe/sup 2 +/ through Xe/sup 6 +/ and the results of theoretical calculations are presented for Xe/sup +/ through Xe/sup 6 +/. The data reveal large contributions due to indirect ionization processes. Theoretical cross sections include the contributions of inner-shell excitations to autoionizing levels of the types Xe/sup q/+(4d/sup 10/5s/sup 2/5p/sup 6-q/)..-->..Xe /sup q/+(4d/sup 9/5s/sup 2/5p/sup 7-q/) and Xe/sup q/+(4d/sup 10/5s/sup 2/5p/sup 6-q/)..-->..Xe /sup q/+(4d/sup 9/5s/sup 2/5p/sup 6-q/nl) with nl = 4f, 5d, and 5f. Hartree-Fock structure calculations for the 4d/sup 9/5s/sup 2/5p/sup 6-q/nf configurations are highly term dependent and this has a pronounced effect on the magnitude and energy dependence of indirect contributions to the cross sections. Model calculations indicate that resonant-recombination double autoionization also contributes to the ionization cross sections of Xe/sup 2 +/ through Xe/sup 5 +/.

• Research Organization: Atomic Theory Group, Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830
• OSTI ID: 7051104
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 29:4; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
AUTOIONIZATION
BEAMS
BORN APPROXIMATION
CHARGED PARTICLES
COLLIDING BEAMS
COLLISIONS
CROSS SECTIONS
DWBA
ELECTRON COLLISIONS
ELECTRON-ION COLLISIONS
ION COLLISIONS
IONIZATION
IONS
MULTICHARGED IONS
XENON IONS