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Title: 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]

Abstract

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 techniquemore » 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.« less

Authors:
Publication Date:
Research Org.:
California Univ., Riverside, CA (USA)
OSTI Identifier:
5218999
Resource Type:
Thesis/Dissertation
Resource Relation:
Other Information: Thesis (Ph. D.)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; 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

Citation Formats

Kanik, I. 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]. United States: N. p., 1988. Web.
Kanik, I. 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]. United States.
Kanik, I. Fri . "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]". United States.
@article{osti_5218999,
title = {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]},
author = {Kanik, I},
abstractNote = {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.},
doi = {},
url = {https://www.osti.gov/biblio/5218999}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1988},
month = {1}
}

Thesis/Dissertation:
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