Cover Image

Dynamics of a single trapped ion immersed in a buffer gas

We provide a comprehensive theoretical framework for describing the dynamics of a single trapped ion interacting with a neutral buffer gas, thus extending our previous studies on buffer-gas cooling of ions beyond the critical mass ratio [B. Höltkemeier et al., Phys. Rev. Lett. 116, 233003 (2016)]....

Full description

Saved in:
Bibliographic Details
Main Authors: Höltkemeier, Bastian (Author) , Weckesser, Pascal (Author) , López-Carrera, Henry (Author) , Weidemüller, Matthias (Author)
Format: Article (Journal)
Language:English
Published: 7 December 2016
In: Physical review
Year: 2016, Volume: 94, Issue: 6
ISSN:2469-9934
DOI:10.1103/PhysRevA.94.062703
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevA.94.062703
Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevA.94.062703
Get full text
Author Notes:Bastian Höltkemeier, Pascal Weckesser, Henry López-Carrera, Matthias Weidemüller
Description
Summary:We provide a comprehensive theoretical framework for describing the dynamics of a single trapped ion interacting with a neutral buffer gas, thus extending our previous studies on buffer-gas cooling of ions beyond the critical mass ratio [B. Höltkemeier et al., Phys. Rev. Lett. 116, 233003 (2016)]. By transforming the collisional processes into a frame, where the ion's micromotion is assigned to the buffer-gas atoms, our model allows us to investigate the influence of nonhomogeneous buffer-gas configurations as well as higher multipole orders of the radio-frequency trap in great detail. Depending on the neutral-to-ion mass ratio, three regimes of sympathetic cooling are identified which are characterized by the form of the ion's energy distribution in equilibrium. We provide analytic expressions and numerical simulations of the ion's energy distribution, spatial profile, and cooling rates for these different regimes. Based on these findings, a method for actively decreasing the ion's energy by reducing the spatial expansion of the buffer gas arises (forced sympathetic cooling).
Item Description:Gesehen am 20.05.2020
Physical Description:Online Resource
ISSN:2469-9934
DOI:10.1103/PhysRevA.94.062703

Similar Items