dorsal/arxiv
View SchemaInstability Heating of Sympathetically-Cooled Ions in a Linear Paul Trap
| Authors | T. J. Harmon, N. Moazzen-Ahmadi, R. I. Thompson |
|---|---|
| Categories | |
| ArXiv ID | physics/0208069 |
| URL | https://arxiv.org/abs/physics/0208069 |
| DOI | 10.1103/PhysRevA.67.013415 |
Abstract
Sympathetic laser cooling of ions stored within a linear-geometry, radio frequency, electric-quadrupole trap has been investigated using computational and theoretical techniques. The simulation, which allows 5 sample ions to interact with 35 laser-cooled atomic ions, revealed an instability heating mechanism, which can prevent ions below a certain critical mass from being sympathetically cooled. This critical mass can however be varied by changing the trapping field parameters thus allowing ions with a very large range of masses to be sympathetically cooled using a single ion species. A theoretical explanation of this instability heating mechanism is presented which predicts that the cooling-heating boundary in trapping parameter space is a line of constant $q_u$ (ion trap stability coefficient), a result supported by the computational results. The threshold value of $q_u$ depends on the masses of the interacting ions. A functional form of this dependence is given.
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"abstract": "Sympathetic laser cooling of ions stored within a linear-geometry, radio\nfrequency, electric-quadrupole trap has been investigated using computational\nand theoretical techniques. The simulation, which allows 5 sample ions to\ninteract with 35 laser-cooled atomic ions, revealed an instability heating\nmechanism, which can prevent ions below a certain critical mass from being\nsympathetically cooled. This critical mass can however be varied by changing\nthe trapping field parameters thus allowing ions with a very large range of\nmasses to be sympathetically cooled using a single ion species. A theoretical\nexplanation of this instability heating mechanism is presented which predicts\nthat the cooling-heating boundary in trapping parameter space is a line of\nconstant $q_u$ (ion trap stability coefficient), a result supported by the\ncomputational results. The threshold value of $q_u$ depends on the masses of\nthe interacting ions. A functional form of this dependence is given.",
"arxiv_id": "physics/0208069",
"authors": [
"T. J. Harmon",
"N. Moazzen-Ahmadi",
"R. I. Thompson"
],
"categories": [
"physics.atom-ph"
],
"doi": "10.1103/PhysRevA.67.013415",
"title": "Instability Heating of Sympathetically-Cooled Ions in a Linear Paul Trap",
"url": "https://arxiv.org/abs/physics/0208069"
},
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