Exothermic ion-molecule reactions

Article abstract of DOI:10.1063/1.1727408

Dissociative charge-transfer reactions between rare-gas He⁺, Ne⁺ ions and diatomic N₂, O₂, CO, NO molecules have been studied as a function of reactant-ion velocity. N⁺, O ⁺, and C⁺ fragment ions are the major reaction products observed in these exothermic reactions. Experimental cross sections and corresponding rate constants for thermal-energy ions are in semiquantitative agreement with the theoretical rates calculated from the long-range ion-induced-dipole potential. A reversed-repeller technique was used to probe the kinetic-energy distributions of the ionic reaction products and the experimental (0.2 to 1 eV) distributions so obtained are well correlated with the heats of the respective reactions. The kinetic energies of the product N⁺ and O⁺ ions were shifted to lower values when ³He⁺ was substituted for ⁴He⁺ ions in the NO and O₂ reactions. This shift in product-ion kinetic energy rules out accidentally resonant chargetransfer processes involving excited product atoms and is consistent with a two-body breakup mechanism of transitory HeN⁺ and HeO⁺ at low reactant-ion velocities.

Full text of DOI:10.1063/1.1727408

Exothermic Ion—Molecule Reactions
T. F. Moran and L. Friedman
Citation: The Journal of Chemical Physics 45, 3837 (1966); doi: 10.1063/1.1727408
View online: http://dx.doi.org/10.1063/1.1727408
View Table of Contents: http://scitation.aip.org/content/aip/journal/jcp/45/10?ver=pdfcov
Published by the AIP Publishing
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This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
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This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
41.212.109.170 On: Tue, 02 Dec 2014 17:54:02
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This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
41.212.109.170 On: Tue, 02 Dec 2014 17:54:02
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This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
41.212.109.170 On: Tue, 02 Dec 2014 17:54:02
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This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
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This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
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