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

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 an...

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Bibliographic Details
Published in:arXiv.org 2007-10
Main Authors: Kraft, Stephan D, Mikosch, Jochen, Staanum, Peter, Deiglmayr, Johannes, Lange, Joerg, Fioretti, Andrea, Wester, Roland, Weidemueller, Matthias
Format: Article
Language:English
Subjects:
Acceleration
Atomic properties
Cesium 133
Cesium isotopes
Deflection
High resolution
Ionization
Ions
Laser beams
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Summary: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/Delta m_rms = 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.
ISSN:2331-8422