Issue |
Europhys. Lett.
Volume 67, Number 2, July 2004
|
|
---|---|---|
Page(s) | 198 - 204 | |
Section | Interdisciplinary physics and related areas of science and technology | |
DOI | https://doi.org/10.1209/epl/i2004-10059-y | |
Published online | 01 July 2004 |
Buffer gas cooling and trapping of atoms with small effective magnetic moments
1
Harvard/MIT Center for Ultracold Atoms - Cambridge, MA 02138, USA
2
Department of Physics, Harvard University - Cambridge, MA 02138, USA
3
Department of Physics, MIT - Cambridge, MA 02139, USA
Received:
5
April
2004
Accepted:
10
May
2004
We have extended buffer gas cooling to trap atoms with small
effective magnetic moments . For
, 1012 atoms were buffer
gas cooled, trapped, and thermally isolated in ultra high vacuum
with roughly unit efficiency. For
,
the fraction of atoms remaining after full thermal isolation was
limited by two processes: wind from the rapid removal of the
buffer gas and desorbing helium films. In our current apparatus
we trap atoms with
, and
thermally isolate atoms with
.
This triples the number of atomic species which can be buffer gas
cooled and trapped in thermal isolation. Extrapolation of our
results and simulations of the loss processes indicate that it is
possible to trap and evaporatively cool
atoms
using buffer gas cooling.
PACS: 32.80.Pj – Optical cooling of atoms; trapping / 39.25.+k – Atom manipulation (scanning probe microscopy, laser cooling, etc.) / 68.43.Mn – Adsorption/desorption kinetics
© EDP Sciences, 2004
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