Accession Number : ADA180348

Title :   Detection of Excited States by Laser-Induced Fluorescence.

Descriptive Note : Final rept. Oct 82-Sep 86,

Corporate Author : NATIONAL BUREAU OF STANDARDS BOULDER CO QUANTUM PHYSICS DIV

Personal Author(s) : Wedding,A B ; Phelps,A V

PDF Url : ADA180348

Report Date : Apr 1987

Pagination or Media Count : 37

Abstract : Laser absorption techniques have been used to measure the collisional quenching rate coefficients for a number of levels of the hydrogen state. These rate coefficients are nearly independent of rotational and vibrational quantum number, i.e., 1.7 2.0 x ten to the negative fifteen cubic meter/s. Techniques are being developed for the measurement of electron excitation coefficients for the H2 state. Results are presented from attempts to model experimental measurements of 634 nm emission produced in collisions of pairs of oxygen metastables in the afterglow of pulsed discharges in Oxygen-Argon mixtures. Keywords: Hydrogen, Oxygen, Argon, Metastables, Electrons, Radiation, Excitation coefficient, Excited states.

Descriptors :   *HYDROGEN, *LASER INDUCED FLUORESCENCE, *ELECTRONIC STATES, *METASTABLE STATE, ABSORPTION, AFTERGLOWS, ARGON, COEFFICIENTS, DETECTION, ELECTRONS, EXCITATION, LASERS, OXYGEN, PULSES, QUANTUM THEORY, QUENCHING(INHIBITION), RATES, VIBRATION, COLLISIONS, GAS ANALYSIS, MOLECULAR VIBRATION, ARGON LASERS, PULSED LASERS, DYE LASERS, REACTION KINETICS, MOLECULE MOLECULE INTERACTIONS

Subject Categories : Atomic and Molecular Physics and Spectroscopy
      Radiation and Nuclear Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE