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Elementary reaction rate measurements at high temperatures by tunable-laser flash-absorption

Description: The major objective of this program is to measure thermal rate coefficients and branching ratios of elementary reactions. To perform these measurements, we have constructed an ultrahigh-purity shock tube to generate temperatures between 1000 and 5500 K. The tunable-laser flash-absorption technique is used to measure the rate of change of the concentration of species which absorb below 50,000 cm{sup {minus}1} e.g.: OH, CH, and CH{sub 3}. This technique is being extended into the vacuum-ultraviol… more
Date: March 20, 1992
Creator: Hessler, J.P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Implications of Berthlot`s descriptive of associative reactions

Description: Berthelot`s equation, k{sub {infinity}}(T) = A{sub {infinity}} exp (-Dk{sub B}T), provides a good description of the high-pressure rate coefficient for associative reactions such as CH{sub 3} + CH{sub 3}, CH{sub 3} + OH, and CH{sub 3} + H. The parameter D may be used to characterize an effective temperature-dependent barrier, {Delta}E{sub eff} = Dk{sub B}{sup 2}T{sup 2}, which is due to the internal energy, i.e. rotational and vibrational energy, or the centrifugal barrier of the associating sp… more
Date: October 4, 1996
Creator: Hessler, J.P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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