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Title: Electron-impact dissociation of CH{sub 2}{sup +} ions: Measurement of CH{sup +} and C{sup +} fragment ions

Abstract

Absolute cross sections for electron-impact dissociation of CH{sub 2}{sup +} producing CH{sup +} and C{sup +} fragment ions were measured in the 3-100 eV range using a crossed electron-ion beams technique with total uncertainties of about 11% near the cross section peak. The cross sections are nearly identical for energies above 15 eV, but they are dramatically different at lower energies. The CH{sup +} channel exhibits a strong peak rising from an observed threshold of about 6 eV; the C{sup +} channel is relatively flat down to the lowest measured energy. Ionization cross sections for the CH{sub 2}{sup +} ion are also presented.

Authors:
; ; ;  [1];  [2]
  1. Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6372 (United States)
  2. (Sweden)
Publication Date:
OSTI Identifier:
20982533
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 75; Journal Issue: 5; Other Information: DOI: 10.1103/PhysRevA.75.052715; (c) 2007 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; CARBON IONS; CATIONS; CROSS SECTIONS; DISSOCIATION; ELECTRON BEAMS; EV RANGE; ION BEAMS; IONIZATION; MOLECULAR IONS; ORGANIC COMPOUNDS

Citation Formats

Vane, C. R., Bahati, E. M., Bannister, M. E., Thomas, R. D., and Department of Physics, Albanova, Stockholm University, SE106 91 Stockholm. Electron-impact dissociation of CH{sub 2}{sup +} ions: Measurement of CH{sup +} and C{sup +} fragment ions. United States: N. p., 2007. Web. doi:10.1103/PHYSREVA.75.052715.
Vane, C. R., Bahati, E. M., Bannister, M. E., Thomas, R. D., & Department of Physics, Albanova, Stockholm University, SE106 91 Stockholm. Electron-impact dissociation of CH{sub 2}{sup +} ions: Measurement of CH{sup +} and C{sup +} fragment ions. United States. doi:10.1103/PHYSREVA.75.052715.
Vane, C. R., Bahati, E. M., Bannister, M. E., Thomas, R. D., and Department of Physics, Albanova, Stockholm University, SE106 91 Stockholm. Tue . "Electron-impact dissociation of CH{sub 2}{sup +} ions: Measurement of CH{sup +} and C{sup +} fragment ions". United States. doi:10.1103/PHYSREVA.75.052715.
@article{osti_20982533,
title = {Electron-impact dissociation of CH{sub 2}{sup +} ions: Measurement of CH{sup +} and C{sup +} fragment ions},
author = {Vane, C. R. and Bahati, E. M. and Bannister, M. E. and Thomas, R. D. and Department of Physics, Albanova, Stockholm University, SE106 91 Stockholm},
abstractNote = {Absolute cross sections for electron-impact dissociation of CH{sub 2}{sup +} producing CH{sup +} and C{sup +} fragment ions were measured in the 3-100 eV range using a crossed electron-ion beams technique with total uncertainties of about 11% near the cross section peak. The cross sections are nearly identical for energies above 15 eV, but they are dramatically different at lower energies. The CH{sup +} channel exhibits a strong peak rising from an observed threshold of about 6 eV; the C{sup +} channel is relatively flat down to the lowest measured energy. Ionization cross sections for the CH{sub 2}{sup +} ion are also presented.},
doi = {10.1103/PHYSREVA.75.052715},
journal = {Physical Review. A},
number = 5,
volume = 75,
place = {United States},
year = {Tue May 15 00:00:00 EDT 2007},
month = {Tue May 15 00:00:00 EDT 2007}
}