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  • 1980-1984  (3)
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Material
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Nuclear magnetic resonance on oriented109In(4.2h) and110In(4.9h) after recoil implantation into Fe (1981)
    Springer
    The European physical journal 300 (1981), S. 339-344 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Radioactive109In(j π=9/2+;T 1/2=4.2h) and110In(j π=7+;T 1/2=4.9h) were produced via the109Ag (α, xn) reactions and recoil-implanted into Fe foils. With the technique of nuclear magnetic resonance on oriented nuclei the magnetic hyperfine splittings were investigated in external magnetic fieldsB 0=0.5...4.2 kG. The zero-field splitting were measured as 268.9(2)MHz and 147.3(3)MHz for109InFe and110InFe, respectively. With the known hyperfine fieldB HF(InFe)=−286.6(5) kG the nuclearg-factors are deduced asg(109In)=1.231(3) andg(110In)=0.674(2). Our result for109In shows that theπ g 9/2 g-factors vary by only ∼0.1% betweenA=109 and 115. For the |π 9/2 vd 5/2〉7+ of110In the additivity relation of magnetic moments is fulfilled to on accuracy of 0.3(3)%.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01419866
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Nuclear orientation study of97, 103, 105Ru in Fe (1981)
    Springer
    The European physical journal 299 (1981), S. 353-358 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Angular distributions have been measured forγ-rays emitted following the decays of97, 103, 105Ru oriented in an iron matrix at temperatures down to 2.8mK. From the temperature dependence of theγ-anisotropies the magnetic hyperfine splitting frequenciesν M =|gμ N B HF/h| of97, 103, 105RuFe were found to be 110(7), 57(15) and 80 −50 +17 MHz, respectively. With the known hyperfine fieldB HF=−489.6(4.0) kG the nuclearg-factors are derived as ∣g(97Ru;j π=5/2+)∣=0.29(2), ∣g(103Ru;j π=3/2+)∣=0.15(4) and ∣g(105Ru;j π=3/2+)∣=0.21 -0.13 +0.05 . The analysis for103RuFe has been performed with the assumption ofj π=3/2+ and 5/2+ for the ground state of103Ru. Taking into account experimentally knowng-factors of 3/2+ and 5/2+ states in this mass region, our data strongly favour the assignmentj π=3/2+ for the103Ru ground state.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01441279
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Asymptotic approach to a theory of multiple spin echoes in the low-temperature phases of3He (1984)
    Springer
    Journal of low temperature physics 56 (1984), S. 315-330 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We discuss the phenomenon of multiple spin echoes induced by tipping angle-dependent frequency shifts. A general expression for the echo amplitudes neglecting diffusion effects is given as a spatial integral over a periodicity interval. The asymptotic behavior of this formula in the limit of many echoes is discussed and compared with the exact solution and experimental results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00681447
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    Paper (German National Licenses)
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