Experimental single-impulse magnetic focusing of launched cold atoms

Details Experimental single-impulse magnetic focusing of launched cold atoms Experimental single-impulse magnetic focusing of launched cold atoms

2007-01-23

arxiv.org/abs/physics/0701272v4

J. Phys. B 41, 125302 (2008)

Physics

Atomic Physics

Revised to incorporate referee suggestions, final version

Scientific paper

10.1088/0953-4075/41/12/125302

Single-impulse three-dimensional magnetic focusing of vertically launched cold atoms has been observed. Four different configurations of the lens were used to vary the relative radial and axial focusing properties. Compact focused clouds of 85Rb were seen for all four configurations. It is shown that an atom-optical ray matrix approach for describing the lensing action is insufficient. Numerical simulation using a full approximation to the lens's magnetic field shows very good agreement with the radial focusing properties of the lens. However, the axial (vertical direction) focusing properties are less well described and the reasons for this are discussed.

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