Production of cold metastable helium atoms in a cryostat

Manabu Haraguchi, Yoshiyuki Shibayama, Kazuhiro Kikuchi, Megumi Okamoto, Hiroyuki Sasada, Keiya Shirahama

Research output: Contribution to journalConference articlepeer-review


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 1011 atoms/cm3, respectively, from laser spectroscopy of the 23S1-23P2,1 transitions.

Original languageEnglish
Pages (from-to)34-35
Number of pages2
JournalPhysica B: Condensed Matter
Publication statusPublished - 2003 May 1
EventProceedings of the 23rd international conference on low temper - Hiroshima, Japan
Duration: 2002 Aug 202002 Aug 27


  • Bose-Einstein condensation
  • Helium
  • Laser cooling

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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