Observation of Three-dimensional Long-range Order in Smaller Ion Coulomb Crystals in an rf Trap

Details Observation of Three-dimensional Long-range Order in Smaller Ion Coulomb Crystals in an rf Trap Observation of Three-dimensional Long-range Order in Smaller Ion Coulomb Crystals in an rf Trap

2005-08-18

arxiv.org/abs/physics/0508125v2

Physics

Plasma Physics

5 pages; 4 figures; to appear in Phys. Rev. Lett.; changed contents

Scientific paper

10.1103/PhysRevLett.96.103001

Three-dimensional long-range ordered structures in smaller and near-spherically symmetric Coulomb crystals of ^{40}Ca^+ ions confined in a linear rf Paul trap have been observed when the number of ions exceeds ~1000 ions. This result is unexpected from ground state molecular dynamics (MD) simulations, but found to be in agreement with MD simulations of metastable ion configurations. Previously, three-dimensional long-range ordered structures have only been reported in Penning traps in systems of ~50,000 ions or more.

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