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  • 1
    Electronic Resource
    Electronic Resource
    The decay of ^1^3^1Cs
    Amsterdam : Elsevier
    Nuclear Physics, Section A 130 (1969), S. 545-562 
    Details
    ISSN: 0375-9474
    Keywords: Radioactivity
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0375-9474(69)90866-5
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  • 2
    Electronic Resource
    Electronic Resource
    TheK-shell particle parameter of the 122 keV transition in152Sm (1969)
    Springer
    The European physical journal 228 (1969), S. 391-395 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract TheK-shell particle parameter of the 122 keV transition in152Sm has been investigated using different sources and different experimental arrangements. From our measurements we obtain the mean valueb 2=1.77±0.03. This result deviates from the theoretical value by (6.5±1.5)%. We do not observe hygroscopic effects as reported in Ref.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01558338
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  • 3
    Electronic Resource
    Electronic Resource
    The internal electric fieldgradient in antiferroelectric PbZrO3 studied by perturbed angular correlations (1972)
    Springer
    The European physical journal 255 (1972), S. 196-205 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The internal electric fieldgradient (EFG) at the Zr-site in antiferroelectric polycristalline PbZrO3 has been investigated as a function of temperature by time differential angular correlation measurements. For the application of this technique PbZrO3 was doped with small amounts of radioactive181Hf. In the antiferroelectric phase of PbZrO3 the EFG decreases continously with increasing temperature and exhibits a sharp discontinuity at 230 °C, the Curie point of the compound. In the cubic phase a small remaining EFG is observed which is probably caused by lattice imperfections in the source. The antiferroelectric distortion of the lattice decreases slightly when the temperature approaches the Curie point, as shown by the temperature dependence of the asymmetry parameter of the EFG. The measured EFG at room temperature is compared with the result of a lattice sum calculation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01394627
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  • 4
    Electronic Resource
    Electronic Resource
    Study of combined magnetic and electric hyperfine interactions for cadmium in Dysprosium by time differential perturbed angular correlations (1973)
    Springer
    The European physical journal 260 (1973), S. 131-146 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The combined magnetic and electric hyperfine interaction at the site of a111Cd impurity in magnetically ordered Dysprosium has been investigated as a function of temperature by time differential perturbed angular correlation measurements. Three different phases have been found in metallic Dy with transition temperatures of 85 and 179 °K in agreement with the results of bulk material measurements. In the paramagnetic phase above 179 °K a pure electric quadrupole interaction has been observed. The various contributions to the electric fieldgradient are analyzed and it is shown, that the dominant contribution comes from the conduction electrons. In the ferromagnetic phase which extends from 0 to 85 °K the magnetic hyperfine field at the site of111Cd has the same temperature dependence as the spontaneous magnetization. The value of the hyperfine field at 4.2 °K is ¦H eff¦=(221 ± 4) kG. At 85 °K a transition to the antiferromagnetic phase of Dy occurs, which shows a hysteresis of the transition temperature. In the antiferromagnetic phase the temperature dependence of the hyperfine field deviates considerably from the magnetization curve. It is suggested that this deviation might be due to a temperature dependence of thes-f exchange interaction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01448973
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  • 5
    Electronic Resource
    Electronic Resource
    Time differential perturbed angular correlation studies with154Gd in a liquid environment at different temperatures (1972)
    Springer
    The European physical journal 253 (1972), S. 360-368 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The perturbation of gamma-gamma angular correlations in the 1.17 ns 2+ state of154Gd has been studied by using the154Eu activity dissolved in 6N HClO4. Time differential measurements were performed at five different temperatures between 0 °C and −80 °C. The environment remains in the liquid phase in the whole temperature range and the attenuation of the angular correlations can be described by the theory of Abragam and Pound5. The observed attenuation parameters λ2 and λ4 were used to derive separately the strengths of the magnetic dipole interaction and the electric quadrupole interaction between the nuclei and their environment. The observed temperature dependence of the magnetic dipole and electric quadrupole interaction strength can be understood by a simple model of the attenuation mechanism.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01386170
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  • 6
    Electronic Resource
    Electronic Resource
    The magnetic hyperfine field at Cd nuclei in the rare earth ferromagnets Gd, Tb, Dy, Ho, Er and Tm (1973)
    Springer
    The European physical journal 263 (1973), S. 33-47 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The time differential perturbed angular correlation technique has been used to study the combined magnetic and electric hyperfine interactions at the site of a111Cd impurity in the rare earth ferromagnets Gd, Tb, Dy, Ho, Er, and Tm at 4.2 °K. The following magnetic hyperfine fields at the site of111Cd have been found: ¦H hf ¦=340(7) kG in Gd, 275 (5) kG in Tb, 221 (4) kG in Dy, 116 (3) kG in Er and 60 (6) kG in Tm. In Ho two magnetically different sites were observed with magnetic fields of 159 (3) and 139 (3) kG. Both sites are equally populated. The coupling constantJ 5f of the conduction electron-4f interaction has been calculated for the different rare earth metals from the measured hyperfine fields by means of the RKKY theory.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02351860
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