Levandier DJ1, Chiu YH, Dressler RA.
J Phys Chem A. 2008 Oct 2;112(39):9601-6. doi: 10.1021/jp803120z. Epub 2008 Sep 5.We have measured absolute cross section for the reaction of ground-state O(+) with ammonia at collision energies in the range from near-thermal to approximately 15 eV, using the guided-ion beam (GIB) method. Measurements were also performed using ammonia-d3 to aid in mass assignments. The reaction is dominated at low collision energies by charge transfer; however, the cross section for this exothermic channel is rather small, decreasing sharply with energy from approximately 40 A(2) for normal ammonia at near-thermal energies and leveling off at 3. Read More