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  • Articles: DFG German National Licenses  (2)
  • 82.40  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Laser frequency dependent kinetics of cw laser induced reactions (1983)
    Springer
    Applied physics 30 (1983), S. 79-81 
    Details
    ISSN: 1432-0649
    Keywords: 82.50 ; 82.40
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract CF2ClCF2Cl and ethyl acetate have absorption bands of similar width centered at the same frequency. Kinetics of the decompositions of these compounds by a cw CO2 laser have been studied over a range of laser frequencies extending to 25 cm−1 below band center. At constant translational temperature and pressure, the CF2ClCF2Cl rate constant changes by more than 200 with frequency, while the corresponding change for ethyl acetate is at most 3. The effect of laser frequency increases with increasing CF2ClCF2Cl pressure, while the reverse is true in ethyl acetate. Arrhenius plots show activation energies independent of both frequency and pressure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00688480
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Pressure effects in the kinetics of cw laser induced reactions (1983)
    Springer
    Applied physics 30 (1983), S. 19-21 
    Details
    ISSN: 1432-0649
    Keywords: 82.50 ; 34 ; 82.40
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Rate constantsk and translational temperaturesT have been determined for the decompositions of ethyl acetate and perfluorocyclobutane at various pressures induced by a continuous (cw) CO2 laser. Arrhenius plots give activation energies in good agreement with those reported for thermal rate constantsk 1. The ratiosk/k 1 become progressively larger than unity with decreasing reactant pressure, indicative of laser induced non-thermalization, but the values ofk/k t appear to reach limiting values at low pressures, similar to effects reported elsewhere for CH3CF2Cl. Analysis of the data suggests important general features of vibrational-translational energy transfer in polyatomic compounds.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00692653
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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