Applied Physics B

, Volume 89, Issue 4, pp 453–457 | Cite as

A high-resolution time-of-flight mass spectrometer for the detection of ultracold molecules

  • S.D. Kraft
  • J. Mikosch
  • P. Staanum
  • J. Deiglmayr
  • J. Lange
  • A. Fioretti
  • R. Wester
  • M. Weidemüller
Article

Abstract

We have realized a high-resolution time-of-flight mass spectrometer combined with a magneto-optical trap. The spectrometer enables excellent optical access to the trapped atomic cloud using specifically devised acceleration and deflection electrodes. The ions are extracted along a laser beam axis and deflected onto an off-axis detector. The setup is applied to detect atoms and molecules photoassociated from ultracold atoms. The detection is based on resonance-enhanced multi-photon ionization. Mass resolution up to m/Δmrms=1000 at the mass of 133Cs is achieved. The performance of this spectrometer is demonstrated in the detection of photoassociated ultracold 7Li133Cs molecules near a large signal of 133Cs ions.

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Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  • S.D. Kraft
    • 1
  • J. Mikosch
    • 1
  • P. Staanum
    • 1
    • 2
  • J. Deiglmayr
    • 1
  • J. Lange
    • 1
  • A. Fioretti
    • 3
  • R. Wester
    • 1
  • M. Weidemüller
    • 1
  1. 1.Physikalisches InstitutUniversität FreiburgFreiburgGermany
  2. 2.Institut für QuantenoptikUniversität HannoverHannoverGermany
  3. 3.Istituto per i Processi Chimico-Fisici, C.N.R.PisaItaly

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