Gensemer, S.
and Jin, D.
(2001),
Transition From Collisionless to Hydrodynamic Behavior in an Ultracold Atomic Gas, Physical Review Letters
(Accessed October 7, 2024)
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Transition From Collisionless to Hydrodynamic Behavior in an Ultracold Atomic Gas
Published
Author(s)
S D. Gensemer, D S. Jin
Abstract
Relative motion in a two-component, trapped gas provides a sensitive probe of interactions. By studying the lowest frequency excitations of a two spin-state gas confined in a magnetic trap, we have explored the transition from the collisionless regime to the hydrodynamic regime. As a function of collsion rate, we observe frequency shifts as large as 7 % as well as a dramatic, non-monotonic dependence of the damping rate. The measurements agree qualitatively with expectations for behavior in the collisionless and hydrodynamic limits and are quantitatively compared to a classical kinetic model.Citation
Physical Review Letters
Volume
87
Issue
No. 17
Pub Type
Journals
Keywords
damping, excitations, hydrodynamic
Citation
Issues
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Created October 22, 2001, Updated February 17, 2017