Armentrout, P. B. and Hodges, R. V. and Beauchamp, J. L. (1977) Endothermic reactions of uranium ions with N2, D2, and CD4. Journal of Chemical Physics, 66 (10). pp. 4683-4688. ISSN 0021-9606. http://resolver.caltech.edu/CaltechAUTHORS:ARMjcp77
- Published Version
See Usage Policy.
Use this Persistent URL to link to this item: http://resolver.caltech.edu/CaltechAUTHORS:ARMjcp77
An ion beam apparatus is employed to study the reactions of uranium ions with N2, D2, and CD4 at laboratory energies up to 335 eV. The endothermic reaction of U + with nitrogen leads to the product UN + for which a bond dissociation energy D (UN + ) =4.7±0.2 eV is determined, corresponding to DeltaHf(UN + ) =272±7 kcal/mole. Endothermic reactions of U + with D2 and CD4 lead to formation of UD + with D (UD + ) =2.9±0.1 eV and DeltaHf(UD + ) =254±6 kcal/mole. The dependence of experimental reaction cross sections on relative kinetic energy is discussed in terms of simple models for reaction. The proton affinity of uranium is determined, P.A.(U) =238±5 kcal/mole, and this exceptionally high value is compared to other atomic and molecular base strengths.
|Additional Information:||Copyright © 1977 American Institute of Physics. Received 10 January 1977. This work was supported in part by the Ford Motor Company Fund for Energy Research administered by the California Institute of Technology and by the Energy Research and Development Administration. [J.L.B. was a] Camille and Henry Dreyfus Teacher-Scholar, 1971-1976.|
|Subject Keywords:||IONS BEAMS, URANIUM IONS, ION–, MOLECULE COLLISIONS, CHEMICAL REACTIONS, NITROGEN, DEUTERIUM, METHANE, CROSS SECTIONS|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Archive Administrator|
|Deposited On:||23 Jul 2008 23:32|
|Last Modified:||26 Dec 2012 10:10|
Repository Staff Only: item control page