https://doi.org/10.1140/epjd/e2010-10467-5
A split-ring Paul trap for dipolar excitation of the radial ion motion and ellipticity studies
Institute of Physics, Ernst Moritz Arndt University, 17489 Greifswald, Germany
Corresponding author: a bandelow@physik.uni-greifswald.de
Received:
25
August
2010
Revised:
22
November
2010
Published online:
14
January
2011
A radial dipolar excitation has been applied to a hyperbolic Paul trap with a segmented ring electrode. In addition, this
configuration allowed the generation of an elliptical Paul trap by superimposing the RF trapping field with an electrostatic
azimuthally quadrupolar field. The changes in the radial ion motions with respect to the conventional Paul trap are discussed and
investigated experimentally. As expected, the formerly degenerated radial eigenfrequencies 
of the standard Paul trap split
into two separate resonances at 
and 
, while the axial eigenfrequency 
remains unaffected. The new trap
design adds flexibility and extends the range of applications of Paul traps.
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2011
