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


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.


Coulomb Repulsion Ultracold Atom Middle Plate Expect Arrival Time Ultracold Molecule 
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  1. 1.
    J. Ullrich, V.P. Shevelko, editors, Many-Particle Quantum Dynamics in Atomic and Molecular Fragmentation, (Springer, Berlin, 2003)Google Scholar
  2. 2.
    G. Petty, C. Tai, F.W. Dalby, Phys. Rev. Lett. 34, 1207 (1975)CrossRefADSGoogle Scholar
  3. 3.
    A. Fioretti, D. Comparat, A. Crubellier, O. Dulieu, F. Masnou-Seeuws, P. Pillet, Phys. Rev. Lett. 80, 4402 (1998)CrossRefADSGoogle Scholar
  4. 4.
    C. Gabbanini, A. Fioretti, A. Lucchesini, S. Gozzini, M. Mazzoni, Phys. Rev. Lett. 84, 2814 (2000)CrossRefADSGoogle Scholar
  5. 5.
    A.N. Nikolov, E.E. Eyler, X.T. Wang, J. Li, H. Wang, W.C. Stwalley, P.L. Gould, Phys. Rev. Lett. 82, 703 (1999)CrossRefADSGoogle Scholar
  6. 6.
    A. Kerman, J.M. Sage, S. Sainis, T. Bergeman, D. DeMille, Phys. Rev. Lett. 92, 153001 (2004)CrossRefADSGoogle Scholar
  7. 7.
    M.W. Mancini, G.D. Telles, A.R.L. Caires, V.S. Bagnato, L.G. Marcassa, Phys. Rev. Lett. 92, 133203 (2004)CrossRefADSGoogle Scholar
  8. 8.
    D. Wang, J. Qi, M.F. Stone, O. Nikolayeva, H. Wang, B. Hattaway, S.D. Gensemer, P.L. Gould, E.E. Eyler, W.C. Stwalley, Phys. Rev. Lett. 93, 243005 (2004)CrossRefADSGoogle Scholar
  9. 9.
    C. Haimberger, J. Kleinert, M. Bhattacharya, N.P. Bigelow, Phys. Rev. A 70, 021402 (2004)CrossRefADSGoogle Scholar
  10. 10.
    W.C. Wiley, I.H. McLaren, Rev. Sci. Instrum. 26, 1150 (1955)CrossRefADSGoogle Scholar
  11. 11.
    C. Weickhardt, F. Moritz, J. Grotemeyer, Mass Spectrom. Rev. 15, 139 (1996)Google Scholar
  12. 12.
    W. Paul, H.P. Reinhard, U. von Zahn, Z. Phys. 152, 143 (1958)CrossRefADSGoogle Scholar
  13. 13.
    J.L. Wiza, Nucl. Instrum. Methods 162, 587 (1979)CrossRefGoogle Scholar
  14. 14.
    SimIon 3D Version 7.0, Idaho National Engineering and Environmental LaboratoryGoogle Scholar
  15. 15.
    U. Boesl, H.J. Neusser, R. Weinkauf, E.W. Schlag, J. Phys. Chem. 86, 4857 (1982)CrossRefGoogle Scholar
  16. 16.
    R. Frey, G. Weiss, H. Kaminski, E.W. Schlag, Z. Naturforsch. 40a, 1349 (1985)Google Scholar
  17. 17.
    R.P. Schmid, C. Weickhardt, Int. J. Mass Spectrom. 206, 181 (2001)Google Scholar
  18. 18.
    S.D. Kraft, P. Staanum, J. Lange, L. Vogel, R. Wester, M. Weidemüller, J. Phys. B 39, S993 (2006)CrossRefADSGoogle Scholar
  19. 19.
    P. Staanum, A. Pashov, H. Knöckel, E. Tiemann, Phys. Rev. A 75, 042513 (2007)CrossRefADSGoogle Scholar
  20. 20.
    U. Schlöder, H. Engler, U. Schünemann, R. Grimm, M. Weidemüller, Eur. Phys. J. D 73, 802 (1999)Google Scholar

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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