Mechanistic study of the optogalvanic effect in a hollow-cathode discharge

Journal Article · Thu Jul 01 04:00:00 EDT 1982 · J. Opt. Soc. Am.; (United States)

DOI:https://doi.org/10.1364/JOSA.72.000912· OSTI ID:5075748

Dreze, C; Demers, Y; Gagne, J M

Simultaneous detection of the optogalvanic effect and of the laser-induced intensity variations in emission lines in a uranium hollow-cathode discharge show that a part of the absorbed laser energy is transferred to all the species in the lamp by means of electron collisions. This transfer results in a global heating of the plasma and in an increase of ion and atom densities. From the measured nonisotopic selectivity of ion production associated with the optogalvanic effect, we conclude that impedance changes in the discharge are essentially due to the heating of the plasma. It follows that the optogalvanic effect is not a suitable scheme for isotopic enrichment by cataphoresis.

• Research Organization: Laboratoire d'Optique et de Spectroscopie, Departement de Genie Physique, Ecole Polytechnique, Montreal, Quebec H3C 3A7, Canada
• OSTI ID: 5075748
• Journal Information: J. Opt. Soc. Am.; (United States), Journal Name: J. Opt. Soc. Am.; (United States) Vol. 72:7; ISSN JOSAA
• Country of Publication: United States
• Language: English

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74 ATOMIC AND MOLECULAR PHYSICS
ABSORPTION SPECTRA
ACTINIDES
CATHODES
CHARGED PARTICLES
COLLISIONS
DESIGN
ELECTRIC DISCHARGES
ELECTRODES
ELECTRON COLLISIONS
ELECTROPHORESIS
ELEMENTS
EMISSION SPECTRA
ENERGY TRANSFER
FLUIDS
GALVANOMAGNETIC EFFECT
GASES
HEATING
HOLLOW CATHODES
ION DENSITY
IONIZATION
IONS
ISOTOPE EFFECTS
ISOTOPE ENRICHED MATERIALS
ISOTOPE SEPARATION
LASER-RADIATION HEATING
MAGNETO-OPTICAL EFFECTS
MATERIALS
METALS
NONMETALS
OPACITY
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
PLASMA
PLASMA DENSITY
PLASMA HEATING
RARE GASES
SEPARATION PROCESSES
SPECTRA
URANIUM
URANIUM IONS
XENON
XENON IONS