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arXiv · 0903.3522

Inelastic Collisions in an Ultracold quasi-2D Gas

Zhiying Li·Roman V. Krems
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Abstract

We present a formalism for rigorous calculations of cross sections for inelastic and reactive collisions of ultracold atoms and molecules confined by laser fields in quasi-2D geometry. Our results show that the elastic-to-inelastic ratios of collision cross sections are enhanced in the presence of a laser confinement and that the threshold energy dependence of the collision cross sections can be tuned by varying the confinement strength and external magnetic fields. The enhancement of the elastic-to-inelastic ratios is inversely proportional to $\sqrt{\epsilon/\hbar \omega_0}$, where $\epsilon$ is the kinetic energy and $\omega_0$ is the oscillation frequency of the trapped particles in the confinement potential.

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Zhiying Li, Roman V. Krems. 2009-03-20. Inelastic Collisions in an Ultracold quasi-2D Gas. https://doi.org/10.1103/physreva.79.050701

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