State-resolved vibrational, rotational, and translational energy deposition in CO sub 2 (00 sup 0 1) excited by collisions with hot hydrogen atoms

Journal Article · Sun Apr 15 04:00:00 EDT 1990 · Journal of Chemical Physics; (USA)

DOI:https://doi.org/10.1063/1.457704· OSTI ID:7188737

Khan, F A; Kreutz, T G; Flynn, G W ^[1]; Weston, Jr, R E ^[2]

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1. Department of Chemistry, Columbia University, New York, NY (USA) Columbia Radiation Laboratory, Columbia University, New York, New York 10027 (USA)
2. Department of Chemistry, Brookhaven National Laboratory, Upton, New York 11973 (USA)

Time-domain tunable diode laser absorption spectroscopy has been used to measure rotationally resolved transient absorption line shapes and nascent rotational populations for CO{sub 2} molecules excited into the (00{sup 0}1) vibrational state by collisions with translationally hot hydrogen atoms. High-accuracy measurements were made at both 292 and 223 K, providing information about the initial-state dependence of the collision dynamics and about the (temperature-independent) state--to--state scattering cross sections. The nascent rotational population distribution is found to be nearly independent of temperature, indicating broad rotational inelasticity in the 00{sup 0}0{r arrow}00{sup 0}1 scattering process. The nascent populations and transient linewidths are interpreted in terms of two separate theoretical models which lend substantial insight into the H--CO{sub 2} collision dynamics.

• DOE Contract Number: FG02-88ER13937
• OSTI ID: 7188737
• Journal Information: Journal of Chemical Physics; (USA), Journal Name: Journal of Chemical Physics; (USA) Vol. 92:8; ISSN JCPSA; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
ATOM-MOLECULE COLLISIONS
BREMSSTRAHLUNG
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
COLLISIONS
DATA
DECOMPOSITION
ELECTROMAGNETIC RADIATION
ELEMENTS
ENERGY LEVELS
ENERGY TRANSFER
ENERGY-LEVEL TRANSITIONS
EXCITATION
EXCITED STATES
EXPERIMENTAL DATA
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
INFORMATION
LASER SPECTROSCOPY
LOW TEMPERATURE
MEDIUM TEMPERATURE
MOLECULE COLLISIONS
NONMETALS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOLYSIS
RADIATIONS
ROTATIONAL STATES
SPECTROSCOPY
SULFIDES
SULFUR COMPOUNDS
SYNCHROTRON RADIATION
VIBRATIONAL STATES