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  • 1975-1979  (4)
  • 1
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract In the ejected electron spectra from collisions of C2+, O4+ and Si10,11,12+ with argon toms at energies of 2–4 MeV/amu, a series of intense lines has been observed, which originates from doubly excited autoionizing states of Belike projectiles. These lines correspond to electron energies between 2 and 20 eV in the projectile frame. For kinematic reasons these lines can only be detected near the forward direction.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 286 (1978), S. 233-234 
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Continuum electrons centered in velocity about that of the projectile and ejected near zero degrees in the laboratory frame have been observed for collisions of highly stripped Cq+ and Oq+ ions incident on Argon. For fully stripped projectile ions, the Z dependence and the velocity dependence of the continuum capture cross section have been determined for beam energies of 1.6 to 2.8 MeV/amu. Striking disagreements are noted between some results of this work and present theoretical predictions.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 286 (1978), S. 249-252 
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Anisotropy spectra of the MOK X-ray transitions have been measured in F-Al, Al-Al and Cl-Al collisions as a function of the projectile energy. The measurements at higher energies indicate a new molecular effect due to transitions from quasicontinuum states to the MO 1s σ-orbitals.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Sozial- und Präventivmedizin 22 (1977), S. 130-136 
    ISSN: 1420-911X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Pendant les années 1971–1976 on a mesuré à Zurich dans différents endroits les immissions de poussière suspendue, de plomb et de benzopyrène. Dans le centre de la ville, les valeurs annuelles moyennes pour la poussière suspendue se trouvent entre 90 et 180Μg/m3; pour le plomb elles se trouvent entre 2 et 3Μg/m3 et pour le benzopyrène entre 6 et 7 ng/m3. Dans la périphérie de la ville ainsi qu'à Netstal les concentrations sont 2–3 fois inférieures. Dans tous les lieux de mesure les valeurs en hiver étaient plus élevées que les valeurs en été; l'augmentation des valeurs est particulièrement frappante pendant les inversions atmosphériques. Les valeurs des immissions de poussière suspendue et de plomb mesurées dans le centre de la ville atteignent les valeurs de mesure dans des villes allemandes et sont dans la grandeur des limites tolérables. En premier lieu on voit la nécessité de prendre des mesures pour réduire les émissions: d'effectuer des contrÔles des chauffages et d'abaisser la teneur en plomb dans l'essence.
    Abstract: Summary Levels of particulate matter, lead and benzo(a)pyrene were measured during 1971–1976 at different monitoring stations in Zurich. Annual averages in city proper ranged between 90 and 180Μg/m3 for particulate matter, 2 and 3Μg/m3 for lead and between 6 and 7 ng/m3 for benzo(a)pyrene. Corresponding values for the suburbs as well as for the village of Netstal were about 1/3 to 1/2. Winter levels were higher than the summer ones at all the sites. These differences were more obvious in case of calms. Ambient concentrations of particulate matter and lead measured in the city center were similar to those measured in german cities and were in the same range as air quality standards. Primary attention should be paid to the reduction of emissions, as surveillance of space heating and incineration equipment, and the reduction of lead in fossil fuels.
    Notes: Zusammenfassung Von 1971–1976 wurden in Zürich an verschiedenen Stellen die Schwebestaub-, Blei- und Benzpyren-Immissionen gemessen. In den städtischen Quartieren lagen die Jahresmittelwerte für Schwebestaub zwischen 90 und 180Μg/m3, für Blei zwischen 2 und 3Μg/ m3 und für Benzpyren zwischen 6 und 7 ng/m3. In den Aussenquartieren sowie in der Ortschaft Netstal lagen die Schwebestaub- und Bleikonzentrationen 2–3mal niedriger, und die Benzpyrenwerte waren ungefähr gleich hoch. An allen Messstellen wurden im Winter höhere Werte gemessen als im Sommer; besonders deutlich waren die Anstiege bei austauscharmen Wetterlagen. Die im Zentrum der Stadt gemessenen Schwebestaub- und Blei-Immissionen erreichen die Grössenordnung von Werten in deutschen Städten und liegen im Bereich der Grenzwerte. Notwendig sind in erster Linie Massnahmen zur Reduktion der Emissionen wie Kontrollen der Hausfeuerungen und Herabsetzung des Bleigehaltes im Benzin.
    Type of Medium: Electronic Resource
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