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Marcel Mudrich

Atom-molecule collisions in an optically trapped gas

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  • N. Zahzam, Laboratoire Aimé Cotton, CNRS, Bâtiment 505
  • ,
  • Thomas Vogt, Laboratoire Aimé Cotton, CNRS, Bâtiment 505
  • ,
  • M. Mudrich
  • Daniel Comparat, Laboratoire Aimé Cotton, CNRS, Bâtiment 505
  • ,
  • Pierre Pillet, Laboratoire Aimé Cotton, CNRS, Bâtiment 505

Cold inelastic collisions between confined cesium (Cs) atoms and Cs2 molecules are investigated inside a CO2 laser dipole trap. Inelastic atom-molecule collisions can be observed and measured with a rate coefficient of ∼2.6×10-11cm3s-1, mainly independent of the molecular rovibrational state populated. Lifetimes of purely atomic and molecular samples are essentially limited by rest gas collisions. The pure molecular trap lifetime ranges 0.3-1s, 4 times smaller than the atomic one, as is also observed in a pure magnetic trap. We give an estimation of the inelastic molecule-molecule collision rate to be ∼10-11cm3s-1.

TidsskriftPhysical Review Letters
StatusUdgivet - 20 jan. 2006
Eksternt udgivetJa

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