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  • 1
    Electronic Resource
    Electronic Resource
    Discovery of molecular hydrogen in a high-velocity cloud of the Galactic halo (1999)
    [s.l.] : Macmillian Magazines Ltd.
    Nature 402 (1999), S. 386-387 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The Milky Way's halo contains clouds of neutral hydrogen with high radial velocities which do not follow the general rotational motion of the Galaxy. Few distances to these high-velocity clouds are known, so even gross properties such as total mass are hard to determine. As a consequence, there ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/46492
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Recombination rates of small ions and their attachment to aerosol particles (1978)
    Springer
    Pure and applied geophysics 116 (1978), S. 1101-1113 
    Details
    ISSN: 1420-9136
    Keywords: Aerosol ; Recombination ; Small ion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract It could be shown by measurements of the air conductivity and using a mean profile for the ionization rate that experimental and theoretical values of the recombination rate of small ions based on a three body recombination process (Thomson) are in very good agreement up to 20 km altitude. The divergency of the experimental and theoretical curves above 20 km can be interpreted by assuming that there exists in this altitude region a crossover from the three body recombination to a two body recombination process. The value of the recombination coefficient is about 4·10−7 cm3 s−1 in 25 km altitude, compared with 1.4·10−6 cm3 s−1 at ground level. Furtheron it was possible for the first time to get some experimental data of attachment coefficients up to 13 km from simultaneous measurements of the air conductivity and Aitken nuclei concentration. These values are in good agreement with those obtained by theoretical considerations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00874674
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    Paper (German National Licenses)
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