arXiv physics/98090171998-09physics.atom-ph

Bose-Einstein Condensation of Atomic Hydrogen

Dale G. Fried, Thomas C. Killian, Lorenz Willmann, David Landhuis, Stephen C. Moss, Daniel Kleppner, Thomas J. Greytak

备注：: Accepted for publication in PRL; 9 pages, 4 PostScript figures, ReVTeX. Updated discussion of degeneracy effects
DOI：: 10.1103/PhysRevLett.81.3811

英文摘要：

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}.

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