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Continuous loading of an electrostatic trap for polar molecules.

T Rieger1, T Junglen, S A Rangwala

  • 1Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Strasse 1, D-85748 Garching, Germany.

Physical Review Letters
|December 31, 2005
PubMed
Summary

A new electrostatic trap for polar molecules has been demonstrated, achieving high densities and long lifetimes. This trap offers excellent conditions for precision measurements and cold chemistry applications.

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Area of Science:

  • Atomic, Molecular, and Optical Physics
  • Physical Chemistry

Background:

  • Electrostatic traps are crucial for manipulating and studying polar molecules.
  • Previous traps had limitations in continuous operation or density.

Purpose of the Study:

  • To demonstrate a continuously operated electrostatic trap for polar molecules.
  • To characterize the trap's performance in terms of density, lifetime, and temperature.

Main Methods:

  • Utilized a continuously operated electrostatic trap with a volume of 0.6 cm³.
  • Employed deuterated ammonia from a quadrupole velocity filter.
  • Measured trap density, average lifetime, and motional temperature.

Main Results:

  • Achieved a trap density of approximately 10⁸ cm⁻³.

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  • Obtained an average molecule lifetime of 130 ms.
  • Reached a motional temperature of approximately 300 mK.

    • Conclusions:

    • The demonstrated electrostatic trap provides excellent starting conditions for high-precision measurements.
    • The trap can serve as a first stage for molecular cooling schemes.
    • It is suitable as a "reaction vessel" for cold chemistry research.