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Title: [Laser enhanced chemical reaction studies]. [Progress report]

Abstract

Experimental studies of dynamic molecular processes are described with particular emphasis on the use of a powerful infrared diode laser probe technique developed in our laboratory. This technique allows us to determine the final states of CO{sub 2} (and other molecules) produced by collisions, photofragmentation, or chemical reactions with a spectral resolution of 0.0003 cm{sup {minus}1} and a time resolution of 10{sup {minus}7} sec. Such high spectral resolution provides a detailed picture of the vibrational and rotational states of molecules produced by these dynamic events. We have used this experimental method to probe collisions between hot hydrogen/deuterium atoms and CO{sub 2}, between O({sup 1}D) atoms and CO{sub 2}, to study the final states of DC1 molecules produced as a result of the reactions of hot Cl atoms, and to investigate the dynamics of the reaction between OH and CO molecules. Advances in our techniques over the past two years have allowed us to identify and study more than 200 final rotational states in ten different vibrational levels of CO{sub 2} encompassing all 3 normal modes, many overtones, and combination states of the molecule. We have extended the technique to probe a variety of new molecules such as OCS, N{sub 2}O,more » DCl, and CS{sub 2}. All of this work is aimed at providing experimental tests for polyatomic molecule potential energy surfaces, chemical transition states in complex systems, and theories of reaction dynamic in molecules with more than 3 atoms.« less

Publication Date:
Research Org.:
Columbia Univ., New York, NY (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
10134798
Report Number(s):
DOE/ER/13937-4
ON: DE92010772
DOE Contract Number:  
FG02-88ER13937
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: [1992]
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 74 ATOMIC AND MOLECULAR PHYSICS; POLYATOMIC MOLECULES; EXCITED STATES; INFRARED RADIATION; ABSORPTION; DOPPLER EFFECT; CARBON DIOXIDE; CARBON OXYSULFIDE; NITROGEN DIOXIDE; CARBON SULFIDES; CARBON MONOXIDE; DEUTERIUM COMPOUNDS; HOT ATOM CHEMISTRY; ATOM-MOLECULE COLLISIONS; LASERS; PROGRESS REPORT; 400201; 664300; 400500; CHEMICAL AND PHYSICOCHEMICAL PROPERTIES; COLLISION PHENOMENA; PHOTOCHEMISTRY

Citation Formats

. [Laser enhanced chemical reaction studies]. [Progress report]. United States: N. p., 1992. Web. doi:10.2172/10134798.
. [Laser enhanced chemical reaction studies]. [Progress report]. United States. https://doi.org/10.2172/10134798
. 1992. "[Laser enhanced chemical reaction studies]. [Progress report]". United States. https://doi.org/10.2172/10134798. https://www.osti.gov/servlets/purl/10134798.
@article{osti_10134798,
title = {[Laser enhanced chemical reaction studies]. [Progress report]},
author = {},
abstractNote = {Experimental studies of dynamic molecular processes are described with particular emphasis on the use of a powerful infrared diode laser probe technique developed in our laboratory. This technique allows us to determine the final states of CO{sub 2} (and other molecules) produced by collisions, photofragmentation, or chemical reactions with a spectral resolution of 0.0003 cm{sup {minus}1} and a time resolution of 10{sup {minus}7} sec. Such high spectral resolution provides a detailed picture of the vibrational and rotational states of molecules produced by these dynamic events. We have used this experimental method to probe collisions between hot hydrogen/deuterium atoms and CO{sub 2}, between O({sup 1}D) atoms and CO{sub 2}, to study the final states of DC1 molecules produced as a result of the reactions of hot Cl atoms, and to investigate the dynamics of the reaction between OH and CO molecules. Advances in our techniques over the past two years have allowed us to identify and study more than 200 final rotational states in ten different vibrational levels of CO{sub 2} encompassing all 3 normal modes, many overtones, and combination states of the molecule. We have extended the technique to probe a variety of new molecules such as OCS, N{sub 2}O, DCl, and CS{sub 2}. All of this work is aimed at providing experimental tests for polyatomic molecule potential energy surfaces, chemical transition states in complex systems, and theories of reaction dynamic in molecules with more than 3 atoms.},
doi = {10.2172/10134798},
url = {https://www.osti.gov/biblio/10134798}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Apr 01 00:00:00 EST 1992},
month = {Wed Apr 01 00:00:00 EST 1992}
}