Large atom number Bose-Einstein condensate of sodium

Van der Stam, K.M.R., van Ooijen, E.D., Meppelink, R., Vogels, J.M. and van der Straten, P. (2007) Large atom number Bose-Einstein condensate of sodium. Review of Scientific Instruments, 78 1: Article number 013102. doi:10.1063/1.2424439

Author Van der Stam, K.M.R.
van Ooijen, E.D.
Meppelink, R.
Vogels, J.M.
van der Straten, P.
Title Large atom number Bose-Einstein condensate of sodium
Journal name Review of Scientific Instruments   Check publisher's open access policy
ISSN 0034-6748
Publication date 2007-01-01
Sub-type Article (original research)
DOI 10.1063/1.2424439
Volume 78
Issue 1
Start page Article number 013102
Total pages 10
Place of publication United States
Publisher American Institute of Physics
Language eng
Abstract We describe the setup to create a large Bose-Einstein condensate containing more than 120× 106 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 2.0× 1010 atoms with a temperature of 320 μK and a density of about 1.0× 1011 atoms cm3. 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 three-body losses at the end of the evaporation, the magnetic trap is decompressed in the axial direction.
Keyword Optical Trap
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
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