Bose-Einstein Condensation of Atomic Hydrogen
Atomic Physics
2009-10-31 v2
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}.
Cite
@article{arxiv.physics/9809017,
title = {Bose-Einstein Condensation of Atomic Hydrogen},
author = {Dale G. Fried and Thomas C. Killian and Lorenz Willmann and David Landhuis and Stephen C. Moss and Daniel Kleppner and Thomas J. Greytak},
journal= {arXiv preprint arXiv:physics/9809017},
year = {2009}
}
Comments
Accepted for publication in PRL; 9 pages, 4 PostScript figures, ReVTeX. Updated discussion of degeneracy effects