How can a 22-pole ion trap exhibit 10 local minima in the effective potential?
Atomic Physics
2015-05-13 v2
Abstract
The column density distribution of trapped OH ions in a 22-pole ion trap is measured for different trap parameters. The density is obtained from position-dependent photodetachment rate measurements. Overall, agreement is found with the effective potential of an ideal 22-pole. However, in addition we observe 10 distinct minima in the trapping potential, which indicate a breaking of the 22-fold symmetry. Numerical simulations show that a displacement of a subset of the radiofrequency electrodes can serve as an explanation for this symmetry breaking.
Keywords
Cite
@article{arxiv.0902.1695,
title = {How can a 22-pole ion trap exhibit 10 local minima in the effective potential?},
author = {R. Otto and P. Hlavenka and S. Trippel and J. Mikosch and K. Singer and M. Weidemueller and R. Wester},
journal= {arXiv preprint arXiv:0902.1695},
year = {2015}
}