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  • 1
    Digitale Medien
    Digitale Medien
    Multiwavelength Q-switched CO2 laser with continuous discharge (1992)
    Springer
    Applied physics 55 (1992), S. 65-70 
    Details
    ISSN: 1432-0649
    Schlagwort(e): 42.60.Da ; 42.60.Fc
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract A low-pressure (20 mbar) CO2 laser allows to extract pulses at several selected wavelengths simultaneously from the same active medium. We demonstrated this, using an industrial laser modified by a Q-switch and a resonator with two branches. In one branch the wavelengths are spatially separated, whereas in the other they oscillate in one common transverse mode. We designed a multi-wavelength resonator which requires a single additional reflector compared to usual laser cavities. It provided tunable oscillation at six wavelength simultaneously.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00348616
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    HPLC in photokinetics: Determination of reaction mechanism and photochemical quantum yields of (E)-1-phenylpropene (1987)
    Springer
    Chromatographia 23 (1987), S. 395-400 
    Details
    ISSN: 1612-1112
    Schlagwort(e): Column liquid chromatography ; Photokinetic data ; Reaction mechanism ; (E)-1-phenylpropene
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Summary A combined method of high-performance liquid chromatography and UV-absorption spectroscopy is described for use in dynamic systems. It provides a way of obtaining detailed mechanistic information as well as quantitative data (rate constants, quantum yields), even though neither mechanism nor photoproducts are known. The kinetic treatment of the photoreaction of (E)-1-phenylpropene was successful, showing a photo-isomerization and a parallel step. Information on this additional step is obtained by using HPLC to observe the changes in the concentrations of the reactants' selectivity. The necessity of process control is demonstrated.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02311813
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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