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Title: Electron-impact dissociative ionization of ethylene

Abstract

The ionization rates of the electron-impact ionization and dissociative ionization of ethylene for two typical cases: thermal plasmas with an electron temperature in the range between 1000 and 24 000 K; and nonthermal plasmas with the reduced electric field in the range between 10 and 200 Td are presented. Electron-impact dissociative ionization rates were calculated for 11 fragment ions of ethylene in the case of low temperature thermal plasma, and in a case of nonthermal ionized mixture of argon and ethylene. Dissociative ionization cross sections were calculated using a semiempirical binary-encounter bethe (BEB) model [Y. K. Kim and M. E. Rudd, Phys. Rev. A 50, 3954 (1994)], with each of the four most dominant fragments, C{sub 2}H{sub 4}{sup +}, C{sub 2}H{sub 3}{sup +}, C{sub 2}H{sub 2}{sup +}, and H{sup +}, being associated with a single molecular orbital. Calculated cross sections are used in this analysis due to the fact that the existing experimental data are the least accurate in the threshold region and the calculated results can improve the accuracy in that region. Also, the procedure may be extended to molecules for which experimental data are not available.

Authors:
;  [1];  [2]
  1. Department of Physics, Old Dominion University, Norfolk, Virginia 23529 (United States)
  2. Air Force Research Laboratory, Propulsion Directorate, WPAFB, Ohio 45433 (United States)
Publication Date:
OSTI Identifier:
20974582
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 73; Journal Issue: 2; Other Information: DOI: 10.1103/PhysRevA.73.022711; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ARGON; CARBON COMPOUNDS; COMPUTER CALCULATIONS; CROSS SECTIONS; DISSOCIATION; ELECTRIC FIELDS; ELECTRON TEMPERATURE; ELECTRONS; ETHYLENE; HEAVY IONS; HYDROGEN COMPOUNDS; HYDROGEN IONS 1 PLUS; IONIZATION; MIXTURES; MOLECULAR ORBITAL METHOD; MOLECULES; PLASMA; TEMPERATURE RANGE 0065-0273 K

Citation Formats

Popovic, S., Vuskovic, L., and Williams, S. Electron-impact dissociative ionization of ethylene. United States: N. p., 2006. Web. doi:10.1103/PHYSREVA.73.022711.
Popovic, S., Vuskovic, L., & Williams, S. Electron-impact dissociative ionization of ethylene. United States. doi:10.1103/PHYSREVA.73.022711.
Popovic, S., Vuskovic, L., and Williams, S. Wed . "Electron-impact dissociative ionization of ethylene". United States. doi:10.1103/PHYSREVA.73.022711.
@article{osti_20974582,
title = {Electron-impact dissociative ionization of ethylene},
author = {Popovic, S. and Vuskovic, L. and Williams, S.},
abstractNote = {The ionization rates of the electron-impact ionization and dissociative ionization of ethylene for two typical cases: thermal plasmas with an electron temperature in the range between 1000 and 24 000 K; and nonthermal plasmas with the reduced electric field in the range between 10 and 200 Td are presented. Electron-impact dissociative ionization rates were calculated for 11 fragment ions of ethylene in the case of low temperature thermal plasma, and in a case of nonthermal ionized mixture of argon and ethylene. Dissociative ionization cross sections were calculated using a semiempirical binary-encounter bethe (BEB) model [Y. K. Kim and M. E. Rudd, Phys. Rev. A 50, 3954 (1994)], with each of the four most dominant fragments, C{sub 2}H{sub 4}{sup +}, C{sub 2}H{sub 3}{sup +}, C{sub 2}H{sub 2}{sup +}, and H{sup +}, being associated with a single molecular orbital. Calculated cross sections are used in this analysis due to the fact that the existing experimental data are the least accurate in the threshold region and the calculated results can improve the accuracy in that region. Also, the procedure may be extended to molecules for which experimental data are not available.},
doi = {10.1103/PHYSREVA.73.022711},
journal = {Physical Review. A},
number = 2,
volume = 73,
place = {United States},
year = {Wed Feb 15 00:00:00 EST 2006},
month = {Wed Feb 15 00:00:00 EST 2006}
}