135 citations · 190 across the 4 of their papers we have counts for
4 papers
Universal three-body parameter in ultracold 4He*
S. Knoop, J. S. Borbely, W. Vassen +1
We have analyzed our recently-measured three-body loss rate coefficient for a Bose-Einstein condensate of spin-polarized metastable triplet 4He atoms in terms of Efimov physics. Th…
Non-exponential one-body loss in a Bose-Einstein condensate
S. Knoop, J. S. Borbely, R. van Rooij +1
We have studied the decay of a Bose-Einstein condensate of metastable helium atoms in an optical dipole trap. In the regime where two- and three-body losses can be neglected we sho…
Magnetic-field dependent trap loss of ultracold metastable helium
J. S. Borbely, R. van Rooij, S. Knoop +1
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…
Frequency metrology in quantum degenerate helium: Direct measurement of the 2 3S1 - 2 1S0 transition
R. van Rooij, J. S. Borbely, J. Simonet +4
Precision spectroscopy of simple atomic systems has refined our understanding of the fundamental laws of quantum physics. In particular, helium spectroscopy has played a crucial ro…