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  • 1995-1999  (2)
  • 1990-1994  (4)
  • 1980-1984  (13)
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  • 1
    Electronic Resource
    Electronic Resource
    Measurements of magnetic moments of Tc isotopes and the hyperfine field of Tc in Fe and Ni (1995)
    Springer
    The European physical journal 350 (1995), S. 311-318 
    Details
    ISSN: 1434-601X
    Keywords: 21.10.Ky ; 76.50.Jx ; 76.80.+ y
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We report measurements of nuclear magnetic resonance on oriented nuclei (NMR-ON) on94Tc (Iπ=7+,T 1/2=4.9 h),95Tc (I π=9/2+,T 1/2=20 h) and96Tc (I π=7+,T 1/2=4.3 d) in Fe and on95Tc and96Tc in Ni. In order to elucidate the discrepancies on the hyperfine field of TcFe in the literature, the resonances were measured with high precision as a function of the external magnetic field Bext up to 2.0 T. In addition, TDPAC measurements were performed on99TcFe at T=300 K and 13 K. TheT=0 K hyperfine fields of Tc in Fe and Ni were determined to be −314(3) kG and −51.8(5) kG, respectively. The g-factors of93Tc,94Tc,95Tc,96Tc and99Tc(E=181 keV;I π=5/2+) are redetermined as g(93Tc)=1.405(14), g(94Tc)=0.731(7),g(95Tc)=1.321(13), g(96Tc)=0.727(7), g(99Tc)=1.390(17).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01291188
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    Paper (German National Licenses)
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  • 2
    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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  • 3
    Electronic Resource
    Electronic Resource
    NMR-ON measurement of the electric quadrupole interaction of199Au in Fe (1982)
    Springer
    The European physical journal 307 (1982), S. 159-161 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The magnetic-dipole and electric-quadrupole interaction frequencies of199AuJ π=3/2+ T 1/2=3.1 d) in Fe were measured with nuclear magnetic resonance on oriented nuclei as 166.69(4) MHz and −1.52(2) MHz, respectively. This quadrupole splitting is in disagreement to the value previously reported.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01414830
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  • 4
    Electronic Resource
    Electronic Resource
    A mini transmissionγ-ray Compton polarimeter and measurements of the sign of magnetic moments of radioactive nuclei (1991)
    Springer
    The European physical journal 340 (1991), S. 235-239 
    Details
    ISSN: 1434-601X
    Keywords: 21.10.Ky ; 29.75.+x ; 76.80.+y
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A mini transmissionγ-ray Compton polarimeter was developed for the measurement of the sign of magnetic moments of radioactive nuclei with low-temperature nuclear orientation. The signs of the magnetic moments of the following isotopes were determined:193Os [μ=+0.7297(16)μ N];191m Ir [μ=+6.20(9)μ N];192Ir [μ=+1.924(10)μ N];194Ir [μ=+0.39(1)μ N];195m Pt [μ=−0.605(15)μ N].
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01294670
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  • 5
    Electronic Resource
    Electronic Resource
    Theg-factor of the 9/2+ [624] ground state of183Os (1980)
    Springer
    The European physical journal 295 (1980), S. 345-347 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The hyperfine interaction of183OsFe has been studied with nuclear magnetic resonance on oriented nuclei after recoil implantation. Taking into account the resonance displacement due to quadrupole interaction |gμ N H HF/h|=149.9(2) MHz has been found. WithH HF=−1,115(20) kG theg-factor of the 9/2+ [624] ground state of183Os is deduced asg=(−)0.176(3).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01412947
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  • 6
    Electronic Resource
    Electronic Resource
    Nuclear magnetic resonance on oriented192Ir in Fe and Ni (1980)
    Springer
    The European physical journal 295 (1980), S. 385-400 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The hyperfine interaction of192Ir nuclei as dilute impurities in Fe and Ni has been investigated with NMR on oriented nuclei. With the use of highly dilute and pure alloys the line widths could be reduced so far that the quadrupole splitting of192IrFe and192IrNi could be resolved. Taking hyperfine anomalies into account the ground state nuclear moments of192Ir are deduced as |μ|=1.924(10)μ N andQ=2.36(ll) b. The hyperfine field of IrNi was investigated as a function of the Ir concentrationc between 0.01 at % and 5 at %. The dependence ofH HF onc was found to be significantly smaller than that reported from Mössbauer effect measurements. Forc=0.01 at %H HF=−454.7(2.3)kG is deduced. The resonance shift with an external magnetic field has been studied precisely, yieldingK=0.012(23) andK=0.026(12) for the Knight-shift of192Ir in Fe and Ni, respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01412952
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  • 7
    Electronic Resource
    Electronic Resource
    Magnetic moment and electric quadrupole moment of the anomalous186Ir ground state (1980)
    Springer
    The European physical journal 297 (1980), S. 329-332 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The ground state nuclear moments of186Ir (j π=5(+)) have been determined with NMR on oriented186Ir in Ni as |μ|=3.80 −0.02 +0.12 μ n andQ=−3.00 (15)b. The quadrupole moment is consistent with an anamolousj π K=5+0 or 5+1 ground state configuration. The explanation of the magnetic moment in terms of pure 5+0 or 5+1 configurations would require a high collectiveg R-factor ofg R≧0.76. On the other hand the magnetic moment can be explained with a “normal”g R and a mixed ground state configuration.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01422793
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  • 8
    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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  • 9
    Electronic Resource
    Electronic Resource
    Nuclear magnetic resonance on oriented194Ir (T 1/2=19.4 h) in Fe and Ni (1982)
    Springer
    The European physical journal 306 (1982), S. 73-78 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The hyperfine interaction of194Ir (j π =1−;T 1/2=19.4 h) in Fe and Ni has been investigated with the technique of nuclear magnetic resonance on oriented nuclei. For both systems the electronic-orbital-momentum induced electric quadrupole splitting could be resolved. The magnetic and electric hyperfine splitting frequencies,v M =¦gμ N B HF/h¦ andv Q =e 2 qQ/h, respectively, were measured as:194IrFe:v m =408.54 (23) MHz;v q =−2.47(20) MHz;194IrNi:v M =135.24(5) MHz;v q =−1.23 (3) MHz. Taking into account a 3% uncertainty arising from hyperfine anomalies theg-factor is deduced as ¦g¦=0.39 (1). The electric quadrupole moment,Q=+0.352 (18)b, is slightly smaller than expected from the known systematics of deformation parameters in this mass region.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01413411
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  • 10
    Electronic Resource
    Electronic Resource
    Comment on ‘The low temperature electric quadrupole orientation of184Ir and185Ir in rhenium’ (1983)
    Springer
    Hyperfine interactions 14 (1983), S. 97-98 
    Details
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract It is shown that the assignment of a 7−/2[503] neutron configuration to the ground state of184Ir by Allsop et al. [1] is inconsistent with the measured quadrupole moment of this state.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02143934
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