Production of cold metastable helium atoms in a cryostat

Aiming at constructing a compact magneto-optical trap for metastable helium gas ( He ∗) , we have produced cold He ∗ atoms in a simple helium cryostat. The He ∗ atoms are generated by an RF discharge in a vapor above a liquid He bath, which is cooled to 1.2 K by pumping the cryostat. The temperature...

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Bibliographic Details
Published inPhysica. B, Condensed matter Vol. 329; pp. 34 - 35
Main Authors Haraguchi, Manabu, Shibayama, Yoshiyuki, Kikuchi, Kazuhiro, Okamoto, Megumi, Sasada, Hiroyuki, Shirahama, Keiya
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.05.2003
Subjects
Bose–Einstein condensation
Helium
Laser cooling
Laser cooling
39.10.+j
39.25.+k
Bose–Einstein condensation
Helium
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Summary:Aiming at constructing a compact magneto-optical trap for metastable helium gas ( He ∗) , we have produced cold He ∗ atoms in a simple helium cryostat. The He ∗ atoms are generated by an RF discharge in a vapor above a liquid He bath, which is cooled to 1.2 K by pumping the cryostat. The temperature and density of the He ∗ atoms are estimated to be 15 K and 10 11 atoms/cm 3 , respectively, from laser spectroscopy of the 2 3S 1–2 3P 2,1 transitions.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0921-4526
1873-2135
DOI:10.1016/S0921-4526(02)01898-7