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  • 1
    Electronic Resource
    Electronic Resource
    Photon production in nucleon-nucleon collisions (1991)
    Springer
    The European physical journal 339 (1991), S. 391-398 
    Details
    ISSN: 1434-601X
    Keywords: 14.80.Am ; 25.20.Gf ; 25.20.Lj
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We calculate the differential cross section for nucleonnucleon bremsstrahlung in covariant way based on a realistic meson-exchange approximation for the NN-scattering amplitude. The results are discussed in comparison to semiclassical approximations and with respect to the role of internal radiation diagrams. The influence of the anomalous magnetic moment on the proton-neutron bremsstrahlung is found to contribute up to 50% for specific kinematical conditions. Recent measurements on the elementary differential cross sectionpn→pnγ are found to be quite accurately reproduced. Furthermore, for use in proton-nucleus and nucleus-nucleus collisions, we present a parametrization of thepnγ cross section within a broad kinematical range.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01560642
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Saturated 2D-LIF of OH and 2D determination of effective collisional lifetimes in atmospheric pressure flames (1991)
    Springer
    Applied physics 52 (1991), S. 341-346 
    Details
    ISSN: 1432-0649
    Keywords: 42.60 ; 34.50
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Saturation of two-dimensional laser-induced fluorescence is demonstrated using the coincidence between the strong 0–0 vibrational transition of OH around 308 nm and the emission of a tunable XeCl excimer laser. The 2D images were insensitive to variations in the laser power, implying reduced sensitivity to quenching processes. The ratio of the 2D images in the linear and saturated regimes show two-dimensional variations in the saturation intensity. Since saturation intensity is proportional to the quenching rate, this novel method allows one to check for variations in collisional lifetimes across the flame.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00325493
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    Paper (German National Licenses)
    Fulltext
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