Universal model for exoergic bimolecular reactions and inelastic processes

Details Universal model for exoergic bimolecular reactions and inelastic processes Universal model for exoergic bimolecular reactions and inelastic processes

2010-10-24

arxiv.org/abs/1010.4979v1

Physical Review Letters 105, 263203 (2010)

Physics

Atomic Physics

5 pages, 1 figure

Scientific paper

10.1103/PhysRevLett.105.263203

From a rigorous multichannel quantum-defect formulation of bimolecular processes, we derive a fully quantal and analytic model for the total rate of exoergic bimolecular reactions and/or inelastic processes that is applicable over a wide range of temperatures including the ultracold regime. The theory establishes a connection between the ultracold chemistry and the regular chemistry by showing that the same theory that gives the quantum threshold behavior agrees with the classical Gorin model at higher temperatures. In between, it predicts that the rates for identical bosonic molecules and distinguishable molecules would first decrease with temperature outside of the Wigner threshold region, before rising after a minimum is reached.

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