Electron-impact dissociation of XH{sub 2}{sup +} (X=B, C, N, O, F): Absolute cross sections for production of XH{sup +} and X{sup +} fragment ions
- Department of Physics, Auburn University, Auburn, Alabama 36849 (United States)
Absolute cross sections for electron-impact dissociation of XH{sub 2}{sup +} (X= B, C, N, O, F) producing XH{sup +} and X{sup +} ion fragments were measured in the 3- to 100-eV range using a crossed-electron-ion beams technique. Dissociative excitation of BD{sub 2}{sup +} and CH{sub 2}{sup +} producing B{sup +} and C{sup +}, respectively, show a propensity toward a two-body dissociation while the remaining species all tend to show a three-body dissociation dynamic. The BD{sup +} and CH{sup +} dissociative excitation channels show a large resonant-type contribution to the cross sections at {approx}10 eV. For the X{sup +} fragment ion production cross sections, a clear dependence on the threshold energy, as it relates to the rate of rise in the cross section above threshold, is observed.
- OSTI ID:
- 21450788
- Journal Information:
- Physical Review. A, Vol. 82, Issue 4; Other Information: DOI: 10.1103/PhysRevA.82.042720; (c) 2010 The American Physical Society; ISSN 1050-2947
- Country of Publication:
- United States
- Language:
- English
Similar Records
Electron-impact dissociation of XH_2^+ (X=B, C, N, O, F): Absolute cross sections for production of XH^+ and X^+ fragment ions
Electron-Impact Dissociation of CH2+ Ions: Measurement of CH+ and C+ Fragment Ions
Related Subjects
BORON HYDRIDES
BORON IONS
CARBON IONS
CROSS SECTIONS
DISSOCIATION
ELECTRON-MOLECULE COLLISIONS
ELECTRONS
ENERGY DEPENDENCE
EV RANGE
EXCITATION
ION BEAMS
METHANE
NITROGEN HYDRIDES
THREE-BODY PROBLEM
THRESHOLD ENERGY
TWO-BODY PROBLEM
ALKANES
BEAMS
BORON COMPOUNDS
CHARGED PARTICLES
COLLISIONS
ELECTRON COLLISIONS
ELEMENTARY PARTICLES
ENERGY
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
FERMIONS
HYDRIDES
HYDROCARBONS
HYDROGEN COMPOUNDS
IONS
LEPTONS
MANY-BODY PROBLEM
MOLECULE COLLISIONS
NITROGEN COMPOUNDS
ORGANIC COMPOUNDS