Coulomb crystal

Coulomb crystal

[′kü‚läm ‚krist·əl]
(atomic physics)
A crystalline array that is formed from laser-cooled ions stored in an electromagnetic trap and in which the relative positions of the ions are approximately fixed and are determined by the balance between the confining forces of the trap and the Coulomb repulsion of the ions. Also known as ion crystal.
(cryogenics)
A structure formed by electrons trapped at a liquid helium surface at sufficiently high electron densities and low temperatures, in which the electrons occupy the points of a two-dimensional hexagonal lattice.
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References in periodicals archive ?
A Coulomb crystal is created when a system of minute point charges are arranged in a perfect lattice.
This study is the first simultaneous analysis of the effects of strong magnetic fields and electron screening on an ion's motion in a Coulomb crystal.
The experiment started with an ideal Coulomb crystal and then the complexity was increased to match real life processes inside the stars.
The scientific community has long believed a star's core will contain Coulomb crystals that form at temperatures potentially as high as 100 million Kelvin.
Baiko used a realistic model of a neutron star crust and the matter found within, which led to his examination of Coulomb crystals.
The team of researchers used a series of mathematical calculations to study the properties of phonons, which is the name given to the vibrations within the lattice of Coulomb crystals.
In these proceedings of the June 2005 conference, contributors present their work in plasma physics, dusty plasmas, plasma fusion, astrophysics, microelectronics and nanotechnology, including transport processes, Coulomb crystal and liquid formation, void formation, self-excited instabilities, wave propagation, nonlinear phenomena and the nucleation and growth of dust particles in these plasmas.
The 16 papers discuss such aspects as the isotope-selective manipulation of ions in a Paul trap, the creation and dynamics of topological defects in ion Coulomb crystals, coherent manipulations in a microfabricated ion trap, the high-resolution fluorescence and absorption imaging of single trapped ions, monitoring single quantum systems by unsharp measurements, and ion-atom hybrid systems.