Spin-exchange frequency shift in a cesium atomic fountain

Journal Article · Sun Mar 01 00:00:00 EST 1992 · Physical Review A. General Physics; (United States)

DOI:https://doi.org/10.1103/PhysRevA.45.R2671· OSTI ID:7205843

Tiesinga, E; Verhaar, B J; Stoof, H T.C.; van Bragt, D ^[1]

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1. Department of Physics, Eindhoven University of Technology, 5600 MB Eindhoven (Netherlands)

In connection with experiments aiming at the improvement of the cesium atomic beam clock by means of a fountain of laser-cooled cesium atoms, we present expressions for the line shift and line broadening due to collisions between cesium atoms. The coherent collision cross sections occurring in these expressions are calculated by means of the coupled-channels method. The magnitude of the calculated shift implies that spin-exchange collisions are an important factor in limiting the anticipated accuracy of a future cesium fountain clock and of other intended fountain experiments.

• OSTI ID: 7205843
• Journal Information: Physical Review A. General Physics; (United States), Vol. 45:5; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ATOM-ATOM COLLISIONS
LINE BROADENING
CESIUM
ATOMIC CLOCKS
COUPLED CHANNEL THEORY
CROSS SECTIONS
SPECTRAL SHIFT
SPIN EXCHANGE
ALKALI METALS
ATOM COLLISIONS
COLLISIONS
ELEMENTS
METALS
664300* - Atomic & Molecular Physics- Collision Phenomena- (1992-)