Ultracold Rb-OH collisions and prospects for sympathetic cooling

Details Ultracold Rb-OH collisions and prospects for sympathetic cooling Ultracold Rb-OH collisions and prospects for sympathetic cooling

2006-07-10

arxiv.org/abs/physics/0607084v1

Physics

Atomic Physics

submitted to PRL

Scientific paper

10.1103/PhysRevLett.97.183201

We have computed ab inito cross sections for cold collisions of Rb atoms with OH radicals. We predict collision rate constants of order 10^{-11} cm^3/s at temperatures in the range 10-100 mK at which molecules have already been produced experimentally. However, we also find that in these collisions the molecules have a strong propensity for changing their internal state, which could make sympathetic cooling of OH in a Rb buffer gas problematic in magnetostatic or electrostatic traps.

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