Help Privacy Policy Disclaimer
  Advanced SearchBrowse




Journal Article

Deceleration and trapping of ammonia using time-varying electric fields

There are no MPG-Authors in the publication available
External Resource
No external resources are shared
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)

(Publisher version), 2MB

Supplementary Material (public)
There is no public supplementary material available

Bethlem, H. L., Crompvoets, F. M. H., Jongma, R. T., van de Meerakker, S. Y. T., & Meijer, G. (2002). Deceleration and trapping of ammonia using time-varying electric fields. Physical Review A, 65(5): 053416. doi:10.1103/PhysRevA.65.053416.

Cite as: https://hdl.handle.net/21.11116/0000-000B-4E2C-E
A polar molecule experiences a force in an inhomogeneous electric field. Using this force, neutral molecules can be decelerated and trapped. It is shown here that this can in principle be done without loss in phase-space density. Using a series of 64 pulsed inhomogeneous electric fields a supersonic beam of ammonia molecules (14NH3, 14ND3, 15ND3) is decelerated. Subsequently, the decelerated molecules are loaded into an electrostatic quadrupole trap. Densities on the order of 107molecules/cm3 at a temperature of 25 mK are obtained for 14ND3 and 15ND3 separately and simultaneously. This corresponds to a phase-space density in the trap of 2×10-13, 50 times less than the initial phase-space density in the beam.