Ionization rates in a Bose-Einstein condensate of metastable Helium

Details Ionization rates in a Bose-Einstein condensate of metastable Helium Ionization rates in a Bose-Einstein condensate of metastable Helium

2002-08-06

arxiv.org/abs/cond-mat/0208108v1

Physics

Condensed Matter

Statistical Mechanics

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.89.220406

We have studied ionizing collisions in a BEC of He*. Measurements of the ion production rate combined with measurements of the density and number of atoms for the same sample allow us to estimate both the 2 and 3-body contributions to this rate. A comparison with the decay of the number of condensed atoms in our magnetic trap, in the presence of an rf-shield, indicates that ionizing collisions are largely or wholly responsible for the loss. Quantum depletion makes a substantial correction to the 3-body rate constant.

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