Measurement of elastic cross section for cold cesium collisions
Physical Review A - Atomic, Molecular, and Optical Physics 61:3 (2000) 327071-327074
Abstract:
We have measured the time taken for a magnetically trapped cloud of cold cesium atoms in the (F =3,mF=-3) ground state to rethermalize from a nonequilibrium spatial and velocity distribution. From these measurements we infer the dependences of the elastic scattering cross section on temperature and magnetic field in the ranges 1 - 30 μΚ and 0.05-2.0 mT, respectively. We determine a lower bound on the magnitude of the (3,-3) + (3,-3) s-wave scattering length of 940a0.Scissors mode and superfluidity of a trapped Bose-Einstein condensed gas
(2000) 285-289
Bose-Einstein condensation in a rotating anisotropic TOP trap
Journal of Physics B: Atomic, Molecular and Optical Physics 32:24 (1999) 5861-5869
Abstract:
We describe the construction and operation of a time-orbiting potential trap that has different oscillation frequencies along its three principal axes. These axes can be rotated and we have observed Bose-Einstein condensates of 87Rb with a rotating ellipsoidal shape. Under these conditions it has been predicted that quantized vortices form and are stable.Bose-Einstein condensation in a rotating anisotropic TOP trap
(1999)
Observation of the scissors mode and superfluidity of a trapped Bose-Einstein condensed gas
(1999)