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  • 1960-1964  (13)
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  • 11
    Electronic Resource
    Electronic Resource
    Hyperfeinstrukturaufspaltung von rückstoßfreien γ-Linien: II. Das 8,42 keV-Niveau in Tm169 (1961)
    Springer
    The European physical journal 163 (1961), S. 87-91 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Zusammenfassung Es wurde die rückstoßfreie Kernresonanzabsorption in dem 8,42 keV-Niveau von Tm169 beobachtet. Durch Messung der Resonanzabsorption als Funktion der Doppier-Verschiebung zwischen dem Emitter und Absorber wurde eine Hyperfeinstrukturaufspaltung der 8,42 keV-γ-Linie durch die Felder der paramagnetischen Ionen in den Oxydkristallen gefunden.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01328919
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    Paper (German National Licenses)
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  • 12
    Electronic Resource
    Electronic Resource
    Hyperfeinstrukturaufspaltung von rückstoßfreien Gammalinien (1962)
    Springer
    The European physical journal 170 (1962), S. 267-273 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The temperature dependence of the hyperfine splitting of the 8.42 keVγ-ray of Tm169 in oxide crystals was investigated using the Mößbauer-effect. The quadrupole splitting of the first excited state in Tm169 showed a pronounced increase with decreasing temperature. This manifests a contribution of various Stark levels, which are occupied according to their Boltzmann factors, to an average field gradient at the nucleus. It is shown in a model calculation for the temperature dependence of the field gradient that the data can be explained using a maximum splitting of about 400 cm−1 of the electronic groundstate by the crystal field. The emission pattern of the Er2O3-source is broadened below 20° K. This is possibly produced by an interaction with a residual magnetic field from the surrounding Er-ions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01378467
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    Paper (German National Licenses)
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  • 13
    Electronic Resource
    Electronic Resource
    Der Zerfall des Gd151 (1963)
    Springer
    The European physical journal 175 (1963), S. 405-415 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The electron-capture decay of Gd151 was investigated by means ofγ- andγ-γ-coincidence spectrometry, using scintillation counters. Besides the knownγ-rays of 22 kev, 154 kev, 175 kev, 244 kev and 308 kev additionalγ-transitions with energies of 107 kev and 350 kev could be assigned to the decay of Gd151.γ-γ-coincidence measurements showed the following cascade transitions: (107 kev–244 kev), (154 kev–175 kev–22 kev) and (308 kev–22 kev). TheK-conversion-coefficients of several transitions were determined by comparing theγ-intensities and the previously known conversion electron-intensities, using a direct measurement of theK-conversion-coefficient of the 175 kev-transition by a delayed coincidence-experiment as a normalization of the relative intensities. With the available information a level-scheme for Eu151 is proposed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01375250
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    Paper (German National Licenses)
    Fulltext
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