Bose-Einstein Condensation of Atomic Hydrogen

Abstract

We report observation of Bose-Einstein condensation of a trapped, dilute gas of atomic hydrogen. The condensate and normal gas are studied by two-photon spectroscopy of the 1S-2S transition. Interactions among the atoms produce a shift of the resonance frequency proportional to density. The condensate is clearly distinguished by its large frequency shift. The peak condensate density is 4.8 +/- 1.1 \times 10^{15} cm^{-3}, corresponding to a condensate population of 10^9 atoms. The BEC transition occurs at about T=50 uK and n=1.8 \times 10^{14} cm^{-3}.

Accepted for publication in PRL; 9 pages, 4 PostScript figures, ReVTeX. Updated discussion of degeneracy effects

References in corpus (4)

• Bragg spectroscopy of a Bose-Einstein condensate
• Growth and Collapse of a Bose Condensate with Attractive Interactions
• Cold Collision Frequency Shift of the 1S-2S Transition in Hydrogen
• Quantum kinetic theory IV: Intensity and amplitude fluctuations of a Bose- Einstein condensate at finite temperature including trap loss

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