Magnetic slowing down of spin relaxation due to binary collisions of alkali-metal atoms with buffer-gas atoms.

Autor: Walter DK; Department of Physics, Princeton University, Princeton, NJ 08544, USA., Griffith WM, Happer W
Jazyk: angličtina
Zdroj: Physical review letters [Phys Rev Lett] 2002 Mar 04; Vol. 88 (9), pp. 093004. Date of Electronic Publication: 2002 Feb 15.
DOI: 10.1103/PhysRevLett.88.093004
Abstrakt: We report the first studies of magnetic decoupling of the spin relaxation of alkali-metal atoms due to binary collisions with buffer gases. When binary collisions are the dominant relaxation mechanism, the relaxation and its magnetic decoupling are well described by the S-damping rate Gamma(SD) due to the spin-rotation interaction gammaN.S, the spin exchange rate Gamma(EX) for collisions between alkali atoms, and a new "Carver rate" Gamma(C), due to the pressure-shift interaction deltaAI.S, which can substantially broaden the magnetic decoupling curve while having no influence on the zero-field rates.
Databáze: MEDLINE