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  • 1990-1994  (2)
  • 34.50.Fa  (2)
  • 2-oxo-4-methylglutaric acid
  • 1
    Digitale Medien
    Digitale Medien
    Capture of polarized electrons into excited terms of fast atoms during grazing surface collisions (1992)
    Springer
    The European physical journal 23 (1992), S. 41-53 
    Details
    ISSN: 1434-6079
    Schlagwort(e): 34.50.Fa
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Fast ions are scattered from magnetized surfaces under grazing angles of incidence. During the interaction with the surface charge exchange is effective and results in a population of stable and excited atomic terms. This capture of electrons is characterized by anisotropic distributions of atomic orbital angular momenta and in addition — for magnetized targets — by anisotropic distributions of electronic spins. We will discuss in some detail, how these anisotropic distributions can be studied via the analysis of the state of polarization of the fluorescent light, emitted in electronic transitions from excited terms of free atoms after the impact with the surface. We show that a defined variation of the magnetization of the target affects the polarization of the emitted light in a characteristic way, which allows to deduce the electronic spin polarization of the atoms. The method implies some perspectives with respect to the study of magnetic properties of the vacuum-solid interface well above the topmost layer of surface atoms.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01436701
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Population of NaI-terms in grazing ion surface collisions (1990)
    Springer
    The European physical journal 17 (1990), S. 109-117 
    Details
    ISSN: 1434-6079
    Schlagwort(e): 34.50.Fa
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract The population of NaI 3p- and 4d-terms after grazing collisions of fast Na+-ions with a clean Al(111)-surface is studied via optical spectrometry. The ratio of level populationsN(3p)/N(4d) is investigated in dependence on projectile velocity under different experimental conditions. For clean targets and a defined geometry of detection a threshold for excitation of the 4d-term is observed. The data are described by a model of population via resonant one electron tunneling which incorporates the effects of the projectile velocity.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01437664
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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    Artikel (Nationallizenzen)
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