Collisional redistribution of light - Far-wing line shapes and polarizations of the Ba-(Ar, Xe) systems

Details Collisional redistribution of light - Far-wing line shapes and polarizations of the Ba-(Ar, Xe) systems Collisional redistribution of light - Far-wing line shapes and polarizations of the Ba-(Ar, Xe) systems

Nov 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984phrva..30.2366a&link_type=abstract

Physical Review A - General Physics, 3rd Series (ISSN 0556-2791), vol. 30, Nov. 1984, p. 2366-2380. NBS-supported research.

Physics

Atomic Physics

64

Atomic Collisions, Atomic Spectra, Barium, Light Scattering, Polarized Light, Resonance Fluorescence, Spectral Line Width, Argon, Atomic Physics, Decay Rates, Interatomic Forces, Laser Spectroscopy, Metal Vapors, Rayleigh Scattering, Xenon

Scientific paper

The far-wing collisional redistribution line shape, the redistributed fluorescence polarization, and the collisional alignment decay rates have been measured for barium perturbed by argon and xenon. The experiment was performed with a heated gas cell (T = 900 K) with perturber-gas densities in the 1-30-torr range and laser light detuned + or - 3-1000/cm from the 5535-A Ba I 6(1)S-6(1)P resonance line. Metal-vapor densities were determined by a Rayleigh scattering technique which is outlined in detail. By correlating structure in the line shape with that of the polarization, it is possible to make definitive statements about the interatomic potentials. The Ba data show strong similarities with previous experimental results for similar two-electron atoms, namely Ca, Sr, and Hg, and so the present conclusions are of relevance to these systems as well.

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