Measurement of ratios of momentum-transport cross sections for potassium–rare-gases by nulling light-induced drift

Autor:	A. D. Streater, T. C. Morgus, S. J. Rohn
Rok vydání:	1998
Předmět:	Physics Potassium chemistry.chemical_element Laser Atomic and Molecular Physics and Optics law.invention Momentum Neon chemistry law Excited state Atom Light induced Physics::Atomic Physics Atomic physics Line (formation)
Zdroj:	Physical Review A. 57:4983-4986
ISSN:	1094-1622 1050-2947
DOI:	10.1103/physreva.57.4983
Popis:	We report measured pressure ratios for mixtures of neon with other rare gases that lead to a cancellation of normal light-induced drift of potassium atoms excited on the ${D}_{1}$ line by a narrow-band laser. These data can provide a stringent test for potassium--rare-gas potential curves. To a good approximation, the pressure ratios that cancel normal light-induced drift are directly related to ratios of cross-section differences. Corrections for collisions that cause fine-structure transitions without randomizing the velocity of the potassium atom are discussed.
Databáze:	OpenAIRE
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