Separation of two atomic species by white-light-induced drift

Details Separation of two atomic species by white-light-induced drift Separation of two atomic species by white-light-induced drift

Jul 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989phrva..40..867p&link_type=abstract

Physical Review A - General Physics, 3rd Series (ISSN 0556-2791), vol. 40, July 15, 1989, p. 867-875. Research supported by NWO.

Physics

General Physics

11

Atomic Theory, Drift Rate, Gas Mixtures, Light (Visible Radiation), Transport Properties, Absorption Spectra, Atomic Energy Levels, Doppler Effect, Luminous Intensity, Optical Thickness, Stellar Atmospheres

Scientific paper

A source of white light (i.e., with a flat spectrum) can separate the components of a gas mixture. This effect, which may have applications in stellar atmospheres, is due to light-induced drift which appears when absorption lines form in the intensity spectrum of the propagating light. The effect in its simplest form, white light shining into a gas containing two optically absorbing species and a buffer gas, is discussed. Transport equations are presented, assuming two-level atoms and ignoring stimulated emission. Several limiting cases are discussed analytically. A numerical solution is also presented and used to estimate the ranges of validity of the analytical solutions.

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