Power-Law Distributions for a Trapped Ion Interacting with a Classical Buffer Gas
arXiv:0903.0637 · doi:10.1103/PhysRevLett.102.063001
Abstract
Classical collisions with an ideal gas generate non-Maxwellian distribution functions for a single ion in a radio frequency ion trap. The distributions have power-law tails whose exponent depends on the ratio of buffer gas to ion mass. This provides a statistical explanation for the previously observed transition from cooling to heating. Monte Carlo results approximate a Tsallis distribution over a wide range of parameters and have ab initio agreement with experiment.
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