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Title: BEC; Persistent Flow in a Gas
Description: (a) In a donut, shaped, or 'toroidal' trap, atoms mostly exist in a red ring, and do not reside in the center (blue region), which represents an energy hill they cannot climb. (b) Image of a Bose-Einstein condensate (BEC) in the donut trap. (c) When there is no fluid flow around the donut, and the trap is turned off, atoms (red) rush to the center. (d) When fluid flows around the donut, and the trap is turned off, the current around the donut persists, and does not rush to fill the hole.

*PHY, BEC

See also http://www.nist.gov/public_affairs/techbeat/tb2007_1127.htm#bec.
Subjects (names):
Topics/Categories: Physics--Atomic and Molecular Physics
Type: Graphic/scientific data
Source: National Institute of Standards and Technology
Credit Line as it should
appear in print:
Credit: NIST
AV Number: 07PHY029
Date Created: November 2007
Date Entered: 11/27/2007

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