Ultracold Rb-OH collisions and prospects for sympathetic cooling |
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Authors: | Lara Manuel Bohn John L Potter Daniel Soldán Pavel Hutson Jeremy M |
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Institution: | JILA, NIST, and Department of Physics, University of Colorado, Boulder, Colorado 80309-0440, USA. |
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Abstract: | We compute ab initio cross sections for cold collisions of Rb atoms with OH radicals. We predict collision rate constants of order 10(-11) cm3/s at temperatures in the range 10-100 mK at which molecules have already been produced. 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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