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  • 33.20.Kf  (2)
  • NO2  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Applications of tunable dye lasers to air pollution detection: Measurements of atmospheric NO2 concentrations by differential absorption (1974)
    Springer
    Applied physics 3 (1974), S. 115-119 
    Details
    ISSN: 1432-0630
    Keywords: LIDAR ; Air pollution ; Tunable dye laser ; NO2 ; Differential absorption technique
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Remote measurements of atmospheric NO2 concentrations by means of a LIDAR system equipped with a tunable dye laser are reported. Using the differential absorption method, concentration values of about 0.2 ppm were detected over the city of Cologne at distances up to 4 km.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00884408
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  • 2
    Electronic Resource
    Electronic Resource
    Remote measurement of NO2 emission from a chemical factory by the differential absorption technique (1974)
    Springer
    Applied physics 4 (1974), S. 181-182 
    Details
    ISSN: 1432-0630
    Keywords: LIDAR ; Air pollution ; Tunable dye laser ; NO2 ; Differential absorption technique
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Using the differential absorption method the NO2 concentration within the plume of a smoke stack and over the area of a chemical factory was measured.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00884276
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  • 3
    Electronic Resource
    Electronic Resource
    Spectroscopy of triatomic hydrogen (1989)
    Springer
    The European physical journal 13 (1989), S. 129-137 
    Details
    ISSN: 1434-6079
    Keywords: 33.20.Kf ; 33.70.Fw
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The visible emission spectra of H3, D2H, H2D and D3 were studied. Triatomic hydrogen molecules were produced by neutralization of fast ion beams in alkali vapors. In addition to the well-known 0-0 bands, weak vibrational bands of the electronic 3p 2 A″ 2 → 2s 2 A′ 1 transition of D3 and D2H were observed and analyzed. From the decay of the emission along the molecular beam lifetimes of excited states were obtained. For all observed states, 3p 2 A″ 2, 3s 2 A′ 1 and 3d, lifetimes strongly depend on the isotopic mixture. Many lifetimes measured were considerably shorter than ab initio predictions of the radiative lifetimes. Thus radiationless decay is important for all these excited states. Predissociation of the 3p 2 A″ 2 state increases with the rotational quantum number. Possible decay channels are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01398582
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  • 4
    Electronic Resource
    Electronic Resource
    Spectroscopy of triatomic hydrogen (1989)
    Springer
    The European physical journal 13 (1989), S. 139-146 
    Details
    ISSN: 1434-6079
    Keywords: 33.20.Kf ; 33.70.Fw
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The strongest emission band of triatomic hydrogen near 7100 Å was observed after neutralization of mass-selected ion beams of H 3 + , H2D+, D2H+ and D 3 + . For D3 improved molecular constants were determined by inclusion of higher rotational lines. Lifetimes of the upper states of the 7100 Å band were measured. They strongly decrease for the lighter isotopomers because of predissociation. New emission bands of D3 observed between 4200 Å and 4600 Å are assigned to transitions betweenn=4 andn=2 states.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01398583
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