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Electronic energy transfer processes in collisions of metastable argon with N/sub 2/ and H/sub 2/

Thesis/Dissertation ·
OSTI ID:6211762

Estimates of the rotational distributions in the N/sub 2/(C/sup 3/pi/sub u/, v' = 0.1) product of the reacton Ar*(/sup 3/P/sub 2/ /sub 0/) + N/sub 2/(X /sup 1/..sigma../sub g//sup +/) ..-->.. Ar(/sup 1/S) + N/sub 2/*(C/sup 3/pi/sub u/) have been made on the band profiles of the N/sub 2/(C/sup 3/pi/sub u/, v' = 0.1) ..-->.. N/sub 2/(B/sup 3/pi/sub g/, v'' = 0) fluorescence. These measurements were made at relative energies of 0.074 eV, 0.089 eV, and 0.161 eV. The N/sub 2/(C/sup 3/pi/sub u/, v' = 0) band was found to be well represented by Boltzmann distributions with characteristic temperatures of 1700 +- 100 K, 1600 +- 100 K, and 2200 +- 100 K, respectively. The N/sub 2/(C/sup 3/pi/sub u/, v' = 1) data could not be fit by Boltzmann distributions, but did fit Golden Rule distributions within the experimental error. The reaction involving metastable argon and ground state hydrogen molecules was examined by observing a continuum emission. The cross section for fluorescence was measured and seen to rise rapidly from an onset at 0.080 eV and reach a maximum around 0.125 eV. The spectral distributions were seen to peak at lower energies than that calculated by James and Coolidge, leading to speculation that at least some of the photon emission may arise from an excited state of ArH rather than the excited H/sub 2/.

Research Organization:
Florida Univ., Gainesville (USA)
OSTI ID:
6211762
Country of Publication:
United States
Language:
English

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Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ARGON
ATOM COLLISIONS
ATOM-MOLECULE COLLISIONS
COLLISIONS
ELEMENTS
EMISSION
ENERGY LEVELS
ENERGY RANGE
EV RANGE
EXCITED STATES
FLUIDS
FLUORESCENCE
GASES
GROUND STATES
HYDROGEN
LUMINESCENCE
METASTABLE STATES
MILLI EV RANGE
MOLECULE COLLISIONS
NITROGEN
NONMETALS
PHOTON EMISSION
RARE GASES
ROTATIONAL STATES
VERY HIGH TEMPERATURE