Published in
American Physical Society, Physical Review A, 3(62), 2000
DOI: 10.1103/physreva.62.031402
Links
- ORCID
- American Physical Society
- [cds.cern.ch] | PDF
- [arxiv.org] | PDF
- [www.researchgate.net] | PDF
- [arxiv.org] | PDF
Tools
Very long storage times and evaporative cooling of cesium atoms in a quasielectrostatic dipole trap
Full text: Download
Abstract
We have trapped cesium atoms over many minutes in the focus of a ${\mathrm{CO}}_{2}$-laser beam employing an extremely simple laser system. Collisional properties of the unpolarized atoms in their electronic ground state are investigated. Inelastic binary collisions changing the hyperfine state lead to trap loss, which is quantitatively analyzed. Elastic collisions result in evaporative cooling of the trapped gas from 25 $$μ${}\mathrm{K}$ to 10 $$μ${}\mathrm{K}$ over a time scale of about 150 s.