A high-resolution time-of-flight mass spectrometer for the detection of ultracold molecules |
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Authors: | SD Kraft J Mikosch P Staanum J Deiglmayr J Lange A Fioretti R Wester M Weidemüller |
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Institution: | 1.Physikalisches Institut,Universit?t Freiburg,Freiburg,Germany;2.Institut für Quantenoptik,Universit?t Hannover,Hannover,Germany;3.Istituto per i Processi Chimico-Fisici, C.N.R.,Pisa,Italy |
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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.
PACS 07.75.+h; 32.80.Rm; 37.10.Gh |
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