Electron-impact dissociative ionization of ethylene
- Department of Physics, Old Dominion University, Norfolk, Virginia 23529 (United States)
- Air Force Research Laboratory, Propulsion Directorate, WPAFB, Ohio 45433 (United States)
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.
- OSTI ID:
- 20974582
- Journal Information:
- Physical Review. A, Vol. 73, Issue 2; Other Information: DOI: 10.1103/PhysRevA.73.022711; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
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