dorsal/arxiv
View SchemaLarge atom number Bose-Einstein condensate of sodium
| Authors | K. M. R. van der Stam, E. D. van Ooijen, R. Meppelink, J. M. Vogels, P. van der Straten |
|---|---|
| Categories | |
| ArXiv ID | physics/0609028 |
| URL | https://arxiv.org/abs/physics/0609028 |
| DOI | 10.1063/1.2424439 |
Abstract
We describe the setup to create a large Bose-Einstein condensate containing more than 120x10^6 atoms. In the experiment a thermal beam is slowed by a Zeeman slower and captured in a dark-spot magneto-optical trap (MOT). A typical dark-spot MOT in our experiments contains 2.0x10^10 atoms with a temperature of 320 microK and a density of about 1.0x10^11 atoms/cm^3. The sample is spin polarized in a high magnetic field, before the atoms are loaded in the magnetic trap. Spin polarizing in a high magnetic field results in an increase in the transfer efficiency by a factor of 2 compared to experiments without spin polarizing. In the magnetic trap the cloud is cooled to degeneracy in 50 s by evaporative cooling. To suppress the 3-body losses at the end of the evaporation the magnetic trap is decompressed in the axial direction.
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"abstract": "We describe the setup to create a large Bose-Einstein condensate containing\nmore than 120x10^6 atoms. In the experiment a thermal beam is slowed by a\nZeeman slower and captured in a dark-spot magneto-optical trap (MOT). A typical\ndark-spot MOT in our experiments contains 2.0x10^10 atoms with a temperature of\n320 microK and a density of about 1.0x10^11 atoms/cm^3. The sample is spin\npolarized in a high magnetic field, before the atoms are loaded in the magnetic\ntrap. Spin polarizing in a high magnetic field results in an increase in the\ntransfer efficiency by a factor of 2 compared to experiments without spin\npolarizing. In the magnetic trap the cloud is cooled to degeneracy in 50 s by\nevaporative cooling. To suppress the 3-body losses at the end of the\nevaporation the magnetic trap is decompressed in the axial direction.",
"arxiv_id": "physics/0609028",
"authors": [
"K. M. R. van der Stam",
"E. D. van Ooijen",
"R. Meppelink",
"J. M. Vogels",
"P. van der Straten"
],
"categories": [
"physics.atom-ph"
],
"doi": "10.1063/1.2424439",
"title": "Large atom number Bose-Einstein condensate of sodium",
"url": "https://arxiv.org/abs/physics/0609028"
},
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