Cold atom-ion systems in radiofrequency multipole traps: event-drive molecular dynamics and stochastic simulations

Abstract

We have studied the general aspects of the dynamics of an ion trapped in an ideal multipolar radiofrequency trap while interacting with a dense cold atomic gas. In particular, we have explored the dynamical stability, the energy relaxation and the characteristic harmonic motion exhibited by a trapped Yb${}^{+}$ ion in different multipolar potentials and immersed in various cold atomic samples (Li, Na, Rb, Yb). For this purpose, we used two different molecular dynamics simulations; one based on a time-event drive algorithm and the other based on the stochastic Langevin equation. Relevant values for experimental realizations, such as the associated ion's lifetimes and observable distributions, are presented along with some analytical expressions which relate the ion's dynamical properties with the trap parameters.

12 pages, 11 figures

References in corpus (9)

• Observation of collisions between cold Li atoms and Yb${}^{+}$ ions
• Kinetics of a single trapped ion in an ultracold buffer gas
• Evaporation of buffer gas-thermalized anions out of a multipole rf ion trap
• Measurements of trapped-ion heating rates with exchangeable surfaces in close proximity
• Ultracold, radiative charge transfer in hybrid Yb ion - Rb atom traps
• Trap-assisted complexes in cold atom-ion collisions
• Dynamics of a single trapped ion immersed in a buffer gas
• Rydberg atom-ion collisions in cold environments
• The dynamics of a single trapped ion in a high density media: a stochastic approach

Cited by in corpus (2)

• Chaotic scattering and heating in cold ion-atom collisions: two sides of the same coin
• Universality in Ionic Three-body Systems Near an Ion-atom Feshbach Resonance