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Title: Dynamics of electronically inelastic collisions from 3D Doppler measurements

Abstract

Flux-velocity contour maps were obtained for the inelastic collision process Ba({sup 1}{ital P}{sub 1})+O{sub 2}N{sub 2}{r arrow}Ba({sup 3}{ital P}{sub 2})+O{sub 2}N{sub 2} from Doppler scans of scattered Ba({sup 3}{ital P}{sub 2}) taken over a range of probe laser directions in a crossed-beam experiment. Collision with O{sub 2} resulted in sharply forward scattered Ba({sup 3}{ital P}{sub 2}), with efficient conversion of inital electronic energy into O{sub 2} internal energy and little momentum transfer. Collision with N{sub 2} was dominated by wide-angle scattering with most of the available electronic energy appearing in product translation. The results suggest the importance of large-impact-parameter collisions and a near-resonant energy transfer in the case of O{sub 2}, while for N{sub 2} close collisions dominate despite the presence of an analogous near-resonant channel. The results represent the first direct experimental demonstration of a near-resonant quenching process.

Authors:
; ; ; ; ; ; ; ;  [1];  [2]
  1. DRECAM/SPAM, Centre d'Etudes Nucleaires, Saclay, 91191 Gif-sur-Yvette CEDEX (France)
  2. Chemical Sciences Division, Lawrence Berkeley Laboratory, and Department of Chemistry, University of California, Berkeley (USA)
Publication Date:
OSTI Identifier:
6154201
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Journal Article
Journal Name:
Physical Review Letters; (United States)
Additional Journal Information:
Journal Volume: 67:22; Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; BARIUM; CHEMICAL REACTIONS; OXYGEN; ATOM-MOLECULE COLLISIONS; COLLIDING BEAMS; DISTRIBUTION; DOPPLER EFFECT; DYNAMICS; ENERGY TRANSFER; EV RANGE; EXCITED STATES; EXPERIMENTAL DATA; INELASTIC SCATTERING; LASERS; MOLECULAR BEAMS; NITROGEN; RESONANCE; VELOCITY; ALKALINE EARTH METALS; ATOM COLLISIONS; BEAMS; COLLISIONS; DATA; ELEMENTS; ENERGY LEVELS; ENERGY RANGE; INFORMATION; MECHANICS; METALS; MOLECULE COLLISIONS; NONMETALS; NUMERICAL DATA; SCATTERING; 400201* - Chemical & Physicochemical Properties

Citation Formats

Suits, A G, de Pujo, P, Sublemontier, O, Visticot, J, Berlande, J, Cuvellier, J, Gustavsson, T, Mestdagh, J, Meynadier, P, and Lee, Y T. Dynamics of electronically inelastic collisions from 3D Doppler measurements. United States: N. p., 1991. Web. doi:10.1103/PhysRevLett.67.3070.
Suits, A G, de Pujo, P, Sublemontier, O, Visticot, J, Berlande, J, Cuvellier, J, Gustavsson, T, Mestdagh, J, Meynadier, P, & Lee, Y T. Dynamics of electronically inelastic collisions from 3D Doppler measurements. United States. https://doi.org/10.1103/PhysRevLett.67.3070
Suits, A G, de Pujo, P, Sublemontier, O, Visticot, J, Berlande, J, Cuvellier, J, Gustavsson, T, Mestdagh, J, Meynadier, P, and Lee, Y T. 1991. "Dynamics of electronically inelastic collisions from 3D Doppler measurements". United States. https://doi.org/10.1103/PhysRevLett.67.3070.
@article{osti_6154201,
title = {Dynamics of electronically inelastic collisions from 3D Doppler measurements},
author = {Suits, A G and de Pujo, P and Sublemontier, O and Visticot, J and Berlande, J and Cuvellier, J and Gustavsson, T and Mestdagh, J and Meynadier, P and Lee, Y T},
abstractNote = {Flux-velocity contour maps were obtained for the inelastic collision process Ba({sup 1}{ital P}{sub 1})+O{sub 2}N{sub 2}{r arrow}Ba({sup 3}{ital P}{sub 2})+O{sub 2}N{sub 2} from Doppler scans of scattered Ba({sup 3}{ital P}{sub 2}) taken over a range of probe laser directions in a crossed-beam experiment. Collision with O{sub 2} resulted in sharply forward scattered Ba({sup 3}{ital P}{sub 2}), with efficient conversion of inital electronic energy into O{sub 2} internal energy and little momentum transfer. Collision with N{sub 2} was dominated by wide-angle scattering with most of the available electronic energy appearing in product translation. The results suggest the importance of large-impact-parameter collisions and a near-resonant energy transfer in the case of O{sub 2}, while for N{sub 2} close collisions dominate despite the presence of an analogous near-resonant channel. The results represent the first direct experimental demonstration of a near-resonant quenching process.},
doi = {10.1103/PhysRevLett.67.3070},
url = {https://www.osti.gov/biblio/6154201}, journal = {Physical Review Letters; (United States)},
issn = {0031-9007},
number = ,
volume = 67:22,
place = {United States},
year = {Mon Nov 25 00:00:00 EST 1991},
month = {Mon Nov 25 00:00:00 EST 1991}
}