Magnetic-field-dependent trap loss of ultracold metastable helium

J. S. Borbely, R. van Rooij, S. Knoop, W. Vassen

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We have experimentally studied the magnetic-field dependence of the decay of a Bose-Einstein condensate of metastable 4He atoms confined in an optical dipole trap, for atoms in the m=+1 and m=-1 magnetic substates, and up to 450 G. Our measurements confirm longstanding calculations of the two-body loss rate coefficient that show an increase above 50 G. We demonstrate that for m=-1 atoms decay is due to three-body recombination only, with a three-body loss rate coefficient of 6.5(
Original languageEnglish
Article number022706
Pages (from-to)022706
Number of pages7
JournalPhysical Review A. Atomic, Molecular and Optical Physics
Issue number2
Publication statusPublished - 2012


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