ABSOLUTE CROSS-SECTIONS FOR ELECTRON-IMPACT SINGLE IONIZATION OF SI-2+( AND SI)

Authors
DJURIC N BELL EW GUO XQ DUNN GH PHANEUF RA BANNISTER ME PINDZOLA MS GRIFFIN DC
Citation
N. Djuric et al., ABSOLUTE CROSS-SECTIONS FOR ELECTRON-IMPACT SINGLE IONIZATION OF SI-2+( AND SI), Physical review. A, 47(6), 1993, pp. 4786-4793
Citations number
30
Categorie Soggetti
Physics
Journal title
Physical review. A → ACNP
ISSN journal
10502947
Volume
47
Issue
6
Year of publication
1993
Pages
4786 - 4793
Database
ISI
SICI code
1050-2947(1993)47:6<4786:ACFESI>2.0.ZU;2-5
Abstract
Absolute cross sections for electron-impact single ionization of Si+ a nd Si2+ have been measured using crossed beams of ions and electrons a nd calculated using a configuration-average distorted-wave method. Cor rections have been made for metastable components and small fractions of nitrogen impurities in the incident ion beams. Excitation-autoioniz ation measurably enhances the cross sections of both Si+ and Si2+. Ion ization rate coefficients and fitting parameters are presented for the experimental data.