About the dynamics and thermodynamics of trapped ions

Details About the dynamics and thermodynamics of trapped ions About the dynamics and thermodynamics of trapped ions

2009-02-16

arxiv.org/abs/0902.2746v2

Journal of Physics B: Atomic, Molecular and Optical Physics en preparation (2009) 00

Physics

Quantum Physics

accepted for publication in the "Modern Applications of Trapped Ions" special issue

Scientific paper

This tutorial introduces the dynamics of charged particles in a radiofrequency trap in a very general manner to point out the differences between the dynamics in a quadrupole and in a multipole trap. When dense samples are trapped, the dynamics is modified by the Coulomb repulsion between ions. To take into account this repulsion, we propose to use a method, originally developed for particles in Penning trap, that model the ion cloud as a cold fluid. This method can not reproduce the organisation of cold clouds as crystals but it allows one to scale the size of large samples with the trapping parameters and the number of ions trapped, for different linear geometries of trap.

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