Photoionization cross-sections of the first excited states of sodium and lithium in a magneto-optical trap

  • V. Wippel
  • C. Binder
  • W. Huber
  • L. Windholz
  • M. Allegrini
  • F. Fuso
  • E. Arimondo

Abstract:

A two element magneto-optical trap (MOT) for Na and 7Li or 6Li is used to cool and trap each of them separately. A fraction of the cold atoms is maintained in the first 2P3/2 excited state by the cooling laser. These excited state atoms are ionized by laser light in the near-UV region, giving rise to a smaller number of trapped atoms and to different loading parameters. Photoionization cross-sections were derived out of these data. They are in reasonable agreement with data previously obtained using thermal samples and with theoretical predictions.

PACS. 32.80.Pj Optical cooling of atoms; trapping – 32.80.Fb Photoionization of atoms and ions 

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Copyright information

© EDP Sciences, Springer-Verlag, Società Italiana di Fisica 2001

Authors and Affiliations

  • V. Wippel
    • 1
  • C. Binder
    • 1
  • W. Huber
    • 1
  • L. Windholz
    • 1
  • M. Allegrini
    • 2
  • F. Fuso
    • 2
  • E. Arimondo
    • 2
  1. 1.Institut für Experimentalphysik, Technische Universität Graz, Petersgasse 16, 8010 Graz, AustriaAT
  2. 2.INFM, Dipartimento di Fisica, Università di Pisa, Via F. Buonarroti 2, 56127 Pisa, ItalyIT

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