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  • 1
    Electronic Resource
    Electronic Resource
    Remote sensing of mass fluxes of trace gases in the boundary layer (1995)
    Springer
    Applied physics 61 (1995), S. 249-251 
    Details
    ISSN: 1432-0649
    Keywords: 42.68 ; 42.30
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The combination of remote sensing methods like Doppler lidar and FTIR offers the possibility to determine mass fluxes of gases remotely. Doppler lidar measures the three-dimensional wind vector in the vicinity of diffuse sources or the velocity of air in a chimney plume if an industrial complex is monitored. FTIR is a multi-component remote sensing method for gas concentrations. The Fourier transformation of an interferogram of a Michelson interferometer within a FTIR system converts the recorded intensity (function of optical path length) to a spectral signal (function of wavenumber). Both information, velocity and concentration, give the mass fluxes of the tracer (gas). A first test was performed at Munich-North power station with FTIR and cw-Doppler lidar. Fluxes of CO2, CO, NO, and HC1 were determined. The results are in good agreement with the fluxes measured by in-situ instruments of the power station. The method can be used to control industrial complexes from an outside observation site.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01082043
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Analysis of initial energies of fragments produced by 65-keV proton-molecule collisions using a time-of-flight mass spectrometer (1991)
    Springer
    The European physical journal 21 (1991), S. 137-143 
    Details
    ISSN: 1434-6079
    Keywords: 34.50.H ; 34.90 ; 35.80
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A method is described to evaluate initial-energy distributions of fragments produced by proton-molecule collisions. The fragments are analysed by means of a time-of-flight mass spectrometer and their initial energies are evaluated from their time-of-flight spectrum. These energies are presented for various fragments of H2, N2, O2, CO2, CH3Cl, CH3Br, CH3I, C2H6 and C3H8 produced with 65-keV protons. The results indicate the generation of several energetic fragments of the halomethanes, ethane and propane via dissociation of a doubly charged molecule followed by evaporation of one or more hydrogen atoms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01425592
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    Paper (German National Licenses)
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