Trapped Ion Chain Thermometry and Mass Spectrometry through Imaging
Atomic Physics
2016-02-11 v4 Quantum Physics
Abstract
We demonstrate a spatial-imaging thermometry technique for ions in a one-dimensional Coulomb crystal by relating their imaged spatial extent along the linear radiofrequency ion trap axis to normal modes of vibration of coupled oscillators in a harmonic potential. We also use the thermal spatial spread of bright ions in the case of a two-species mixed chain to measure the center-of-mass (COM) resonance frequency of the entire chain and infer the molecular composition of the co-trapped dark ions. These non-destructive techniques create new possibilities for better understanding of sympathetic cooling in mixed-ion chains, improving few-ion mass spectrometry, and trapped-ion thermometry without requiring a scan of Doppler cooling parameters.
Keywords
Cite
@article{arxiv.1408.1415,
title = {Trapped Ion Chain Thermometry and Mass Spectrometry through Imaging},
author = {V. Rajagopal and J. P. Marler and M. G. Kokish and B. C. Odom},
journal= {arXiv preprint arXiv:1408.1415},
year = {2016}
}