Abstract
The anharmonic potential felt by a single-species ions confined in a rf quadrupole trap which results from a non-ideal trap configuration and the charge distribution of the ion cloud is studied. The rf resonance-absorption spectra are explained by a Duffing oscillator and a representation of the line-shape parameter η is derived. Forη > 0.77, the electric signals will exhibit hysteresis. The relation with the anharmonic potential is discussed.
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Luo, X., Zhu, X., Gao, K. et al. Origin and manifestation of the anharmonic potential felt by an ion-cloud in an actual Paul trap. Appl. Phys. B 62, 421–426 (1996). https://doi.org/10.1007/BF01081205
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DOI: https://doi.org/10.1007/BF01081205