Production of cold formaldehyde molecules for study and control of chemical reaction dynamics with hydroxyl radicals

Details Production of cold formaldehyde molecules for study and control of chemical reaction dynamics with hydroxyl radicals Production of cold formaldehyde molecules for study and control of chemical reaction dynamics with hydroxyl radicals

2005-08-18

arxiv.org/abs/physics/0508120v1

Physics

Atomic Physics

Scientific paper

10.1103/PhysRevA.73.063404

We propose a method for controlling a class of low temperature chemical reactions. Specifically, we show the hydrogen abstraction channel in the reaction of formaldehyde (H$_{2}$CO) and the hydroxyl radical (OH) can be controlled through either the molecular state or an external electric field. We also outline experiments for investigating and demonstrating control over this important reaction. To this end, we report the first Stark deceleration of the H$_{2}$CO molecule. We have decelerated a molecular beam of H$_{2}$CO essentially to rest, producing cold molecule packets at a temperature of 100 mK with a few million molecules in the packet at a density of $\sim10^{6}$ cm$^{-3}$.

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