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Search Publications by: Eric A. Cornell (Fed)

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Displaying 26 - 50 of 130

Simplified System for Creating a Bose-Einstein Condensate

September 1, 2003
Author(s)
H J. Lewandowski, D M. Harber, D Whitaker, Eric A. Cornell
We designed and constructed a simplified experimental system to create a Bose-Einstein condensate in 87Rb. Our system has several novel features including a mechanical atom transfer mechanism and a hybrid Ioffe-Pritchard magnetic trap. The apparatus has

Spatial Resolution of Spin Waves in an Ultracold Gas

August 1, 2002
Author(s)
J M. McGuirk, H J. Lewandowski, D M. Harber, T Nikuni, J E. Williams, Eric A. Cornell
We present the first spatially resolved images of spin waves in a gas. The complete longitudinal and transverse spin field as a function oftime and space is reconstructed. Frequencies and damping rates for a standing-wave mode are extracted and compared

Observation of Anomalous Spin-State Segregation in a Trapped Ultracold Vapor

February 1, 2002
Author(s)
H J. Lewandowski, D M. Harber, D Whitaker, Eric A. Cornell
We observe counter-intuitive spin segregation in an inhomogeneous sample of ultra-cold, non-condensed, magnetically trapped Rubidium atomswith effectively two internal spin states. We use spatially selective microwave spectroscopy to verify a simple model

Driving Bose-Einstein-Condensate Vorticity With a Rotating Normal Cloud

November 1, 2001
Author(s)
P C. Haljan, Ian R. Coddington, P Engels, Eric A. Cornell
We have developed an evaporative cooling technique that accelerates the circulation of an ultra-cold 87Rb gas, confined in a static harmonicpotential. As a normal gas is evaporatively spun up and cooled below quantum degeneracy, it is found to nucleate

Dynamics of Collapsing and Exploding Bose-Einstein Condensates

July 1, 2001
Author(s)
E A. Donley, N R. Claussen, S L. Cornish, J L. Roberts, Eric A. Cornell, C E. Wieman
We have explored the dynamics of how a Bose-Einstein condensate collapses when it is suddenly put into the unstable regime of attractiveinteractions. The ability to change the strength and sign of the inter-atomic interactions by tuning the magnetic field