Phys. Rev. Lett. 78, 985–989 (1997)Bose-Einstein Condensation of Lithium: Observation of Limited Condensate NumberReceived 5 September 1996; revised 23 October 1996; published in the issue dated 10 February 1997 Bose-Einstein condensation of 7Li has been studied in a magnetically trapped gas. Because of the effectively attractive interactions between 7Li atoms, many-body quantum theory predicts that the occupation number of the condensate is limited to about 1400 atoms. We observe the condensate number to be limited to a maximum value between 650 and 1300 atoms. The measurements were made using a versatile phase-contrast imaging technique. © 1997 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.78.985
DOI:
10.1103/PhysRevLett.78.985
PACS:
03.75.Fi, 05.30.Jp, 32.80.Pj
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