Efficient magnetic guiding and deflection of atomic beams with moderate velocities |
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| Authors: | A Goepfert F Lison R Schütze R Wynands D Haubrich D Meschede |
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| Institution: | Institut für Angewandte Physik, Rheinische Friedrich-Wilhelms-Universit?t Bonn, Wegelerstr. 8, D-53115 Bonn, Germany (Fax: +49-228/733-474, E-mail: sek@iap.uni-bonn.de), DE
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| Abstract: | We have studied guidance and deflection of a beam of cesium atoms by a strong toroidal magnetic quadrupole field. The beam
guide is made from permanent magnets sustaining a radial field gradient of 2.8 T/cm. Atoms with moderate longitudinal velocities
ranging from 30 m/s to 70 m/s were inserted across the 10-mm-diameter aperture of a 24.5° arc with radius 300 mm. We have
measured transmission and beam divergence and find good agreement with ray-tracing calculations and analytical estimates.
The magnetic beam guide allows for 100% transmission of heavy atoms over large angles.
Received: 9 November 1998 / Revised version: 6 April 1999 / Published online: 30 July 1999 |
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| Keywords: | PACS: 03 75Be 32 80Pj 07 55 w |
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