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Design of a biased Stark trap of molecules that move adiabatically in an electric field N. E. Shafer-Ray, K. A. Milton, B. R. Furneaux, E. R. I. Abraham, and G. R. Kalbfleisch
 

Summary: Design of a biased Stark trap of molecules that move adiabatically in an electric field
N. E. Shafer-Ray, K. A. Milton, B. R. Furneaux, E. R. I. Abraham, and G. R. Kalbfleisch
Department of Physics and Astronomy, The University of Oklahoma, Norman, Oklahoma 73019
Received 8 August 2002; published 25 April 2003
It is shown that Maxwell's equations in a vacuum do not allow for a local maximum in the value of the
electric field E2
, but do allow for a local minimum. Such a field minimum creates a trap of neutral particles
that exhibit a Stark effect. Specific criteria are given for the design of such a trap and results of numerical
calculations of sample trap potentials are presented.
DOI: 10.1103/PhysRevA.67.045401 PACS number s : 32.80.Pj, 41.20.Cv
I. INTRODUCTION
A suitable arrangement of biased conductors 1 leads to
an electrostatic field of zero magnitude at a central location
that grows to tens of kV/cm away from the center. Such a
field has allowed polar molecules to be confined in far
deeper potential wells than may be realized with magnetic
traps 2,3 . The neutral particles we consider do not move in
a potential proportional to the electrostatic potential V, but
instead, the motion is dictated by the spatial dependence of
the shift quantum energy due to the local magnitude of the

  

Source: Abraham, Eric - Department of Physics and Astronomy, University of Oklahoma

 

Collections: Physics