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  • 11
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 65 (1961), S. 191-192 
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 12
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 291 (1981), S. 398-399 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Because the maximum emission intensity of O(1S) occurs at an altitude where the oxygen atom concentration is at a maximum, it was assumed between 1931 and 1961 that the excitation occurs in the reaction2: o+o+o o2+oCs) (D which has been called the Chapman reaction. To explain the absence of any ...
    Type of Medium: Electronic Resource
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  • 13
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 201 (1964), S. 491-492 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In an extensive investigation of the recombination of halogen atoms, which will be reported in detail elsewhere, we have obtained a value for kcl2, which is 100 times greater than that reported by Linnett and Booth. The method, which uses an 'isothermal calorimetric atom detector', measures the ...
    Type of Medium: Electronic Resource
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  • 14
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 15
    Electronic Resource
    Electronic Resource
    Hoboken, NJ : Wiley-Blackwell
    Journal of Polymer Science 25 (1957), S. 279-284 
    ISSN: 0022-3832
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The copolymerization of n-butyl acrylate with both 2 and 4 vinylpyridine was investigated. Spectrophotometric analysis was employed for determining copolymer compositions utilizing the vinylpyridine absorption at 263 mμ. Reactivity ratios for butyl acrylate/2-vinylpyridine were r1 = 2.50 ± 0.50 and r2 = 0.10 ± 0.04. For butyl acrylate/4-vinylpyridine r1 = 5.51 ± 0.09 and r2 = 0.46 ± 0.09. These values were compared with calculated estimates made from the Q-e scheme.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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  • 16
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    International Journal of Chemical Kinetics 12 (1980), S. 501-508 
    ISSN: 0538-8066
    Keywords: Chemistry ; Physical Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: O2 in the A3Σu+ state has been prepared in a discharge flow system by recombining oxygen atoms on a nickel surface. The decay of this excited state was followed by observing the emission between 280 and 400 nm. The wall deactivation was observed to approach unit efficiency. Rate constants were determined to be 0.9 × 10-11, 2.9 × 10-13, and 8.6 × 10-16 cm3/molecule sec for the quenching of O2(A3Σu+) by O, O2, and Ar, respectively.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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  • 17
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    International Journal of Chemical Kinetics 23 (1991), S. 529-539 
    ISSN: 0538-8066
    Keywords: Chemistry ; Physical Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The reaction of the (100) face of a gallium arsenide single crystal with atomic and molecular bromine has been studied in a discharge flow system at temperatures between 100 and 225°C and pressures between 0.1 and 40 torr. The reaction with Br2 was found to be first order in Br2 only at pressures below 1 torr. Temperature dependence studies in the linear range gave the activation energy and preexponential factor for the rate controlling reaction in the low pressure regime. The results are summarized in the following Arrhenius equation: \documentclass{article}\pagestyle{empty}\begin{document}$$ k_1 = 10^{\left({4.5 \pm 5} \right)} \mu {\rm m}\ {\rm min}^{- 1}\ {\rm torr}^{- 1} e^{- {{\left({26.6 \pm 4.2{{{\rm kJ}} \mathord{\left/ {\vphantom {{{\rm kJ}} {{\rm mol}}}} \right. \kern-\nulldelimiterspace} {{\rm mol}}}} \right)} \mathord{\left/ {\vphantom {{\left({26.6 \pm 4.2{{{\rm kJ}} \mathord{\left/ {\vphantom {{{\rm kJ}} {{\rm mol}}}} \right. \kern-\nulldelimiterspace} {{\rm mol}}}} \right)} {RT}}} \right. \kern-\nulldelimiterspace} {RT}}} $$\end{document} Deviations from linearity at high pressures are discussed in terms of two alternative mechanisms.The reaction of GaAs with atomic bromine was also studied as a function of temperature, and found to have a temperature dependence described by the following Arrhenius equation: \documentclass{article}\pagestyle{empty}\begin{document}$$ k_3 = \left({2.0 \pm 0.5} \right) \times 10^4 \mu {\rm m}\ {\rm min} ^{- 1}\ {\rm torr}^{- 1} e^{- {{\left({12.9 \pm 0.9} \right){\rm kJ}} \mathord{\left/ {\vphantom {{\left({12.9 \pm 0.9} \right){\rm kJ}} {{{{\rm mol}} \mathord{\left/ {\vphantom {{{\rm mol}} {RT}}} \right. \kern-\nulldelimiterspace} {RT}}}}} \right. \kern-\nulldelimiterspace} {{{{\rm mol}} \mathord{\left/ {\vphantom {{{\rm mol}} {RT}}} \right. \kern-\nulldelimiterspace} {RT}}}}} $$\end{document}
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
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  • 18
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    International Journal of Chemical Kinetics 13 (1981), S. 667-675 
    ISSN: 0538-8066
    Keywords: Chemistry ; Physical Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The absolute rate constant for the reaction of methyl radicals with ozone has been measured as a function of temperature. Small concentrations of CH3 were generated by flash photolyzing CH3NO2 at 193 nm with an ArF laser. A photoionization mass spectrometer was used to follow the rate of decay of CH3 at various ozone concentrations. The resulting rate constants could be fit by the expressions \documentclass{article}\pagestyle{empty}\begin{document}$$ k_1 = (5.4 \pm 1.5) \times 10^{ - 12} \exp [(- 216 \pm 80)/T]{\rm cm}^3 /{\rm molec}\,{\rm s} $$\end{document} \documentclass{article}\pagestyle{empty}\begin{document}$$ k_1 = (2.6 \pm 0.7) \times 10^{ - 12} {\rm (T/300)}^{{\rm 0}{\rm .71} \pm {\rm 0}{\rm .34}} {\rm cm}^3 /{\rm molec}\,{\rm s} $$\end{document} over the temperature range of 243-384 K. These rate constants can be modeled by simple transition state theory using reasonable parameters for the activated complex. Use of this rate constant shows that less than 1% of the methyl radicals formed in the stratosphere react with ozone.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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