Using a quasistatic drift tube, a constant rate coefficient k=2.9×1010 cm3 s1±30% has been obtained for the reaction of CO+2 with atomic hydrogen at relative energies 0.06 eV≤KEcm≤0.14 eV. Due to the presence of molecular hydrogen in the reaction region, the title reaction is competing with the reaction of CO+2 with H2. A method of separating the two reactions is presented.

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