title: Structure of multispecies charged particles in a quadratic trap.
abstract: Multispecies interacting charged particles in a two-dimensional quadratic trap are studied. The ground-state configurations for different particle and species numbers are obtained by molecular dynamics simulation. It is found that particles with similar mass-to-charge ratio tend to populate a common shell, whose location depends on the particle mass-to-charge ratio, and that the greater the latter, the closer are the particles to the center of the trap. This scaling for the ground-state configuration is independent of the total particle and species numbers in the system.
authors.affiliation: Department of Chemistry, University of Antwerp, Universiteitsplein 1, B-2610 Antwerp, Belgium.
authors.forename: Y H
authors.initials: YH
authors.lastname: Liu
authors.forename: Z Y
authors.initials: ZY
authors.lastname: Chen
authors.forename: M Y
authors.initials: MY
authors.lastname: Yu
authors.forename: L
authors.initials: L
authors.lastname: Wang
authors.forename: A
authors.initials: A
authors.lastname: Bogaerts