Rate constants for the reactions of and with have been measured between 300 and in a high temperature flowing afterglow apparatus. The rate constants near to the collision rate at low temperatures and fall by about a factor of 50 with temperature until a broad minimum is reached at . The highest temperature point shows the increasing rate constant. Comparison to drift tube data taken in a helium buffer shows that total energy controls the reactivity, presumably because the reaction goes through a long lived complex even at . The reaction of with was studied up to . The rate constant is collisional until and then decreases with increasing temperature. Rate constants measured at 1300 and appear to show an increase, but that observation is questionable since could not be made cleanly. The data at and below show that total energy controls reactivity in that range.
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14 April 2006
Research Article|
April 11 2006
Rate constants for the reactions of and with from
Thomas M. Miller;
Thomas M. Miller
Air Force Research Laboratory
, Space Vehicles Directorate, Hanscom Air Force Base, Massachusetts 01731-3010
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Jeffrey F. Friedman;
Jeffrey F. Friedman
a)
Air Force Research Laboratory
, Space Vehicles Directorate, Hanscom Air Force Base, Massachusetts 01731-3010
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John S. Williamson;
John S. Williamson
Air Force Research Laboratory
, Space Vehicles Directorate, Hanscom Air Force Base, Massachusetts 01731-3010
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A. A. Viggiano
A. A. Viggiano
b)
Air Force Research Laboratory
, Space Vehicles Directorate, Hanscom Air Force Base, Massachusetts 01731-3010
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a)
Permanent address: Department of Physics, University of Puerto Rico–Mayaguez, Mayaguez, Puerto Rico 00681-9016.
b)
Author to whom correspondence should be addressed. Electronic mail: [email protected]
J. Chem. Phys. 124, 144305 (2006)
Article history
Received:
January 20 2006
Accepted:
February 07 2006
Citation
Thomas M. Miller, Jeffrey F. Friedman, John S. Williamson, A. A. Viggiano; Rate constants for the reactions of and with from . J. Chem. Phys. 14 April 2006; 124 (14): 144305. https://doi.org/10.1063/1.2181572
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