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  • 1960-1964  (5)
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  • 1
    Electronic Resource
    Electronic Resource
    Hyperfeinstrukturaufspaltung von rückstoßfreien γ-Linien (1961)
    Springer
    The European physical journal 161 (1961), S. 388-391 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Zusammenfassung Mit Hilfe der Methode der rückstoßfreienγ-Emission und Absorption wurde die Schwächung der 80,6 keV-γ-Linie von Er166, das in Ho2O3 eingelagert war, in einem Er2O3-Absorber als Funktion der Geschwindigkeit des Absorbers gemessen. Die Temperatur von Quelle und Absorber war 20
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01342453
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Mößbauer-Effekt im normalleitenden und supraleitenden Zustand von Sn119 (1962)
    Springer
    The European physical journal 166 (1962), S. 109-114 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The number of Moessbauer quanta from the 23.8 keV state of Sn119 in a tin metal source was measured after attenuation by a 16.1 mg/cm2 absorber of tin metal, as a function of temperature above and below the transition point of superconductivity. Source and absorber were kept at the same temperature. The data give evidence of a discontinuous change at the transition temperature: The transmitted intensity is lowered by (1,3±0.15)·10−3 in the superconducting state of source and absorber. This corresponds to an increase of the Debye-Waller-factor by about 0,4%.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01378526
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Magnetisches Moment und Quadrupolmoment des 8,42 keV-Zustandes von Tm169 aus der Hyperfeinstrukturaufspaltung in Tm-Metall (1963)
    Springer
    The European physical journal 172 (1963), S. 231-238 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The hyperfine transition from the 8·42 kev level to the groundstate of Tm169 was investigated using the Mössbauer-Effect in Tm-metal in the temperature range between 5° K and 60° K. Well resolved hyperfine spectra were found between 5° K and 25° K indicating an internal magnetic field of about 7×106 Oe and a large electric fieldgradient. The ratio of the magnetic moments of the 8·42 keV rotational state to the groundstateμ a /μ g =−2·33±0·04 was deduced from these measurements. The magnetic moment of the groundstate and the quadrupole moment of the 8·42 kev level were deduced from calculated internal fields. These data were analyzed in terms of the “Unified Nuclear Model” and the results compared with other known magnetic moments andM-1-transition probabilities in theK=1/2 rotational band of Tm169. The complicated hyperfine spectra obtained above 25° K reveal the influence of complex magnetic ordering on the internal fields in Tm-metal.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01377743
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Das Quadrupolmoment des 8,42 keV-Niveaus von Tm169 (1963)
    Springer
    The European physical journal 175 (1963), S. 416-421 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The hyperfine interaction of the 8·42 kev level of Tm169 was investigated using the Mössbauereffect in Tm-ethylsulfate. The hyperfine-splitting is of pure quadrupoletype; its temperature dependance between 6°K and 250°K was measured. The spectroscopic quadrupolemoment of the 8·42 kev level was determined asQ=−(1·1±0·1) barn, leading to an intrinsic quadrupolmoment ofQ 0=+(5·5±0·5) barn.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01375251
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    Paper (German National Licenses)
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  • 5
    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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