A simple and compact source of cold atoms for cesium fountains and microgravity clocks

Details A simple and compact source of cold atoms for cesium fountains and microgravity clocks A simple and compact source of cold atoms for cesium fountains and microgravity clocks

Jun 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992esasp.340...27c&link_type=abstract

In ESA, Frequency and Time Forum p 27-33 (SEE N93-24978 09-70)

Physics

Optics

3

Atomic Clocks, Cesium, Cooling, Frequency Standards, Magneto-Optics, Microgravity, Trapped Particles, Coefficient Of Friction, Friction Measurement, Magnetic Fields, Temperature Measurement

Scientific paper

The use of very cold atoms for a pulsed fountain clock is addressed. Laser cooling and trapping of atoms has opened up new possibilites in the field of ultrastable atomic frequency standards. A narrow (2 Hz) Ramsey resonance in a Cesium fountain was recently observed, and the expected performances of an optimized fountain clock was discussed. A crucial element in such a fountain as well as in future microgravity clocks is the source of cold atoms. A simple and compact source using a magnetooptical trap, or simply, optical molasses in a low vapor pressure cell, is presented and performances are discussed.

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