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  • Electronic Resource  (7)
  • 1985-1989  (7)
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  • Electronic Resource  (7)
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  • 1
    Electronic Resource
    Electronic Resource
    Magnetic moment of the 5/2−1/2[541] ground state of 14h 185Ir (1986)
    Springer
    The European physical journal 323 (1986), S. 185-187 
    Details
    ISSN: 1434-601X
    Keywords: 21.10.Ky ; 27.80.+q ; 76.80.+y
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The magnetic and electric hyperfine splitting frequencies ¦gμ N B HF/h¦ ande 2 qQ/h of the 5/2−1/2[541] ground state of 14h 185Ir in Ni were measured with nuclear magnetic resonance on oriented nuclei to be 360.8(7) MHz and +6.7(2.0) MHz, respectively. The ground state magnetic dipole moment and electric quadrupole moment of185Ir are deduced to be ¦μ¦=2.601 (14)μ N andQ=−1.9(5)b, taking values for the hyperfine field and electric field gradient of BHF=−454.9 (2.3) kG and eq=−0.151(4) × 1017 V/cm2, respectively. The negative quadrupole moment is in agreement with nuclear-orientation data and proves again theI π K=5/2− 1/2 ground state configuration.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01290310
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Nuclear magnetic resonance on oriented 11/2− 129mXe and131mXe in Fe (1987)
    Springer
    The European physical journal 326 (1987), S. 255-259 
    Details
    ISSN: 1434-601X
    Keywords: 21.10.Ky ; 27.60.+ j ; 76.60.−k ; 76.80.+y
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The magnetic hyperfine splitting frequenciesν M=¦gμ NBHF/h.¦ of the 11/2− isomeric states129m Xe (T1/2=8.9d) and131mXe (T1/2=11.8d) in Fe were measured with nuclear magnetic resonance on oriented nuclei at temperatures of 10–15 mK as 188.0(1) MHz and 209.8(1) MHz, respectively, the samples being prepared with the technique of recoil implantation after (α, x n) reactions. The magnetic moments of129m Xe and131m Xe are deduced to be (−)0.8914(6)μ N and (−)0.9943(6)μ N, respectively. The missing γ-anisotropies for allγ-transitions following the decay of 36.4d 127Xe indicateI=1/2 for the ground state spin of127Xe.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01297578
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Electric quadrupole moments of radioactive Pt isotopes (1985)
    Springer
    Hyperfine interactions 22 (1985), S. 47-53 
    Details
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Nuclear orientation experiments were performed on189Pt (Iπ=3/2−; T1/2=11 h),191pt (Iπ=3/2−; T1/2=2.8 d) and195mptπ=3/2−; T1/2=4.0 d) in an Os single crystal at temperatures down to 10 mK. Preliminary results for the quadrupole splitting νo=e2qQ/h are +48 (9), +39 (6), and −87 (12) MHz for189ptOs,191ptOs, and195mptOs, respectively. Preliminary results for the quadrupole moments are −0.8 (4), −0.6 (3), and +1.4 (7) b for189pt,191pt, and195mpt, respectively. In addition, the quadrupole subresonance structure of189pt and191pt in Fe was measured with quadrupole-interaction resolved NMR-ON spectroscopy. The results for the magnetic hyperfine splitting νM=¦gμNBHF/h¦ and νQ are:189ptFe: νM=277.9 (1) MHz; νQ=+1.39 (5) MHz.191ptFe: νM=320.17 (3) MHZ; νQ=+1.39 (3) MHz. The ratio of the quadrupole moments of191pt and189pt is deduced to be Q (191Pt/Ql89pt)=+1.00 (4). The negative quadrupole moments of189pt and191pt indicate a predominantly oblate shape of the ground states.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02063978
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  • 4
    Electronic Resource
    Electronic Resource
    Nuclear magnetic moment of 12 d 11/2− 131mXe (1985)
    Springer
    Hyperfine interactions 22 (1985), S. 573-577 
    Details
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract NMR-ON measurements were performed on131mXe (Iπ=11/2−; T1/2=12.0 d) in Fe, the sample being prepared by recoil implantation after the130Te(α,3n)131mXe compound reaction at Eα=40 Mev. The hyperfine splitting μNBHF/h¦, extrapolated to zero external magnetic field, was found to be 209.9(1) MHz. Taking BHF=+1523(8) kG for the hyperfine field of XeFe, the magnetic moment of131mXe is deduced to be (−)0.994(5) μN. As a byproduct, the zero-field hyperfine splitting of129mXe (Iπ=11/2−; T1/2=8.9d) in Fe was measured as 188.1(1) MHz, with which a magnetic moment of (−)0.891(5) μN is deduced for129mXe.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02064025
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  • 5
    Electronic Resource
    Electronic Resource
    Dynamics of hydrogen in Ta in the mK-region (1987)
    Springer
    Hyperfine interactions 35 (1987), S. 773-777 
    Details
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The low-temperature diffusion of hydrogen and deuterium in Ta was investigated using the method of perturbed angular correlation. In an ealier paper we reported the results of measurements above 4 K. These experiments have now been extended down to 10 mK. We found that the configuration of trapped hydrogen and deuterium changes, if the sample is cooled from 4.2 K to 10 mK. We suggest that this change is due to a transition of an extended to a more localized wave function of H (D).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02394492
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Shape transition in light Pt isotopes: Magnetic moments and electric quadrupole moment ratios for185,187,189Pt (1988)
    Springer
    Hyperfine interactions 43 (1988), S. 469-472 
    Details
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Nuclear orientation and nuclear magnetic resonance experiments were performed on185, 187, 189Pt isotopes oriented in Fe and single crystal Zn at temperatures down to about 6 mK. The hyperfine splitting frequencies of185Pt and187Pt in iron were determined to be 164.9(2) and 261.1(2) MHz, respectively. With the hyperfine field of −126.1(2.5) T, the g-factors are deduced to be |g(185Pt)|=0.172(3) and |g(187Pt)|=0.272(5). The spectroscopic quadrupole moment of187Pt was found to be negative with magnitude similar to that of189Pt, indicating a predominantly oblate ground state deformation for both isotopes. The spectroscopic quadrupole moment of185Pt was found to be positive, with the ratio Q(185Pt)/Q(189Pt)=−3.6(9), clearly indicating a change to prolate ground state deformation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02398326
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  • 7
    Electronic Resource
    Electronic Resource
    A transmission γ-ray polarimeter for sign measurements of magnetic moments of radioactive nuclei (1988)
    Springer
    Hyperfine interactions 43 (1988), S. 493-499 
    Details
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A transmission γ-ray circular polarimeter has been developed for the measurement of the sign of magnetic moments of radioactive nuclei with low-temperature nuclear orientation. The signs of the magnetic moments were determined for 30h193Os (+), 4.9s191mIr (+), 74 d192Ir (+), 19h194Ir (+) and 4.0 d195mPt (−).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02398331
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    Paper (German National Licenses)
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