Experimental studies of electron-impact phenomena: (I) Absolute elastic differential cross section measurement of CO, N sub 2 , and CO sub 2 using a refined relative flow technique; (II) differential cross section measurements for excitation of electronic levels of CO by electron impact; (III) absolute total scattering cross section measurements for electron impact on Kr, O sub 2 , and CO. [eV range]
Absolute elastic differential scattering cross sections (DCS) for electron impact on CO, N{sub 2}, and CO{sub 2} in the energy range 20-100 eV and angular range 20{degree}-120{degree} were measured. A crossed beam scattering geometry was employed and the results were obtained using a relative flow technique in which the DCS of CO and CO{sub 2} were compared directly to the DCS of helium at each angle and energy and the DCS of N{sub 2} was compared directly to the DCS of CO. The results of the elastic DCS of neon are also presented as a check on the experimental procedure. Differential cross section measurements for excitation of the electronic features of CO by electron impact have been carried out by JPL group. These data have been analyzed and differential cross sections were obtained for the impact energies 12.5 eV and 15.0 eV by using a computer unfolding program that employees flux corrected Franck-Condon factors and calibration scheme developed jointly with the JPL group. Details of the routine for extracting the DCS are presented. Absolute total scattering cross section measurements were carried out for electron impact on Kr, O{sub 2}, and CO. The results were obtained using a linear attenuation technique in the 5-300 eV incident energy range. The present results have an assigned error of 3% and generally found to be in good agreement with other experimental data.
- Research Organization:
- California Univ., Riverside, CA (USA)
- OSTI ID:
- 5218999
- Resource Relation:
- Other Information: Thesis (Ph. D.)
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CARBON DIOXIDE
ELECTRON-MOLECULE COLLISIONS
CARBON MONOXIDE
ELECTRON-ATOM COLLISIONS
SCATTERING
ELASTIC SCATTERING
EXCITATION
KRYPTON
NITROGEN
COLLIDING BEAMS
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
EV RANGE 10-100
TOTAL CROSS SECTIONS
ATOM COLLISIONS
BEAMS
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
COLLISIONS
ELECTRON COLLISIONS
ELEMENTS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EV RANGE
FLUIDS
GASES
MOLECULE COLLISIONS
NONMETALS
OXIDES
OXYGEN COMPOUNDS
RARE GASES
640304* - Atomic
Molecular & Chemical Physics- Collision Phenomena