dorsal/arxiv
View SchemaEllipsoidal Coulomb Crystals in a Linear Radiofrequency Trap
| Authors | U. Fröhlich, B. Roth, S. Schiller |
|---|---|
| Categories | |
| ArXiv ID | physics/0412054 |
| URL | https://arxiv.org/abs/physics/0412054 |
| DOI | 10.1063/1.1976605 |
Abstract
A static quadrupole potential breaks the cylindrical symmetry of the effective potential of a linear rf trap. For a one-component fluid plasma at low temperature, the resulting equilibrium charge distribution is predicted to be an ellipsoid. We have produced laser-cooled Be$^+$ ellipsoidal ion crystals and found good agreement between their shapes and the cold fluid prediction. In two-species mixtures, containing Be$^+$ and sympathetically cooled ions of lower mass, a sufficiently strong static quadrupole potential produces a spatial separation of the species.
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"date_created": "2026-03-02T18:00:53.773000Z",
"date_modified": "2026-03-02T18:00:53.773000Z",
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"abstract": "A static quadrupole potential breaks the cylindrical symmetry of the\neffective potential of a linear rf trap. For a one-component fluid plasma at\nlow temperature, the resulting equilibrium charge distribution is predicted to\nbe an ellipsoid. We have produced laser-cooled Be$^+$ ellipsoidal ion crystals\nand found good agreement between their shapes and the cold fluid prediction. In\ntwo-species mixtures, containing Be$^+$ and sympathetically cooled ions of\nlower mass, a sufficiently strong static quadrupole potential produces a\nspatial separation of the species.",
"arxiv_id": "physics/0412054",
"authors": [
"U. Fr\u00f6hlich",
"B. Roth",
"S. Schiller"
],
"categories": [
"physics.plasm-ph",
"physics.atom-ph"
],
"doi": "10.1063/1.1976605",
"title": "Ellipsoidal Coulomb Crystals in a Linear Radiofrequency Trap",
"url": "https://arxiv.org/abs/physics/0412054"
},
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"variant": "snapshot-2026-03-01",
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