Magnetic-field-dependent trap loss of ultracold metastable helium

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

doi:10.1103/PhysRevA.85.022706

Magnetic-field-dependent trap loss of ultracold metastable helium

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

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Abstract

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 language	English
Article number	022706
Pages (from-to)	022706
Number of pages	7
Journal	Physical Review A. Atomic, Molecular and Optical Physics
Volume	85
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevA.85.022706
Publication status	Published - 2012

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title = "Magnetic-field-dependent trap loss of ultracold metastable helium",

abstract = "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(",

author = "Borbely, {J. S.} and {van Rooij}, R. and S. Knoop and W. Vassen",

year = "2012",

doi = "10.1103/PhysRevA.85.022706",

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AU - Borbely, J. S.

AU - van Rooij, R.

AU - Knoop, S.

AU - Vassen, W.

PY - 2012

Y1 - 2012

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AB - 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(

U2 - 10.1103/PhysRevA.85.022706

DO - 10.1103/PhysRevA.85.022706

M3 - Article

VL - 85

SP - 022706

JO - Physical Review A. Atomic, Molecular and Optical Physics

JF - Physical Review A. Atomic, Molecular and Optical Physics

SN - 1050-2947

IS - 2

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ER -

Magnetic-field-dependent trap loss of ultracold metastable helium

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