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  • 1
    Electronic Resource
    Electronic Resource
    Transient field measurements of first-excited stateg-factors in188,190,192Os (1992)
    Springer
    The European physical journal 342 (1992), S. 373-377 
    Details
    ISSN: 1434-601X
    Keywords: 21.10.Ky ; 27.70.+q ; 27.80.+w
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Transient-field precessions were measured simultaneously for the 21 + states of188,190,192Os as ions of these nuclei traversed a thin polarized iron foil. In contrast with most earlier measurements, the relative gyromagnetic ratios deduced here are independent of the level lifetimes. Emphasis is placed upon determination of theg-factor of the first excited state in190Os, as disparities in measurements of the lifetimes of this level have led to uncertainties in itsg-factor.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01294946
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Measured static hyperfine magnetic fields following implantation of Pt into Fe interpreted as evidence for pre-equilibrium effects (1995)
    Springer
    Hyperfine interactions 96 (1995), S. 1-22 
    Details
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The static hyperfine magnetic field present at Pt nuclei implanted in ferromagnetic Fe has been measured using the ion-implantation perturbed angular correlation (IMPAC) technique following Coulomb excitation. The present measured precessions agree with earlier data, but more recent information on the transient field correction leads to an inferred static field strength that is ∼ 25% smaller than obtained previously. Comparisons are made between the static fields measured by various techniques for Pt and neighbouring ions in iron. From these comparisons, we show that the IMPAC data are consistent with a scenario in which (i) the static field takes about 10 ps to reach its equilibrium value, following recovery from dynamic structural damage caused by the ion-implantation process, and (ii) following equilibration, a large fraction (∼ 90%) of the implanted ions have final positions on lattice sites of the Fe host.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02066268
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    IMP AC in-beam and out-of-beam;g-factors and pre-equilibrium effects following ion-implantation (1996)
    Springer
    Hyperfine interactions 97-98 (1996), S. 479-499 
    Details
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract An out-of-beam IMPAC technique has been developed to measure theg-factors of the 2 l + states in the neutron-deficient Pt isotopes. The hyperfme field for Pt in Fe in those measurements was close to the field obtained in spin-echo and radioactivity measurements, in contrast with in-beam IMPAC measurements for194,196,198Pt, where smaller field strengths were observed. These data, and static fields from in-beam IMPAC measurements for other ions in the Pt region, show a correlation with the lifetime of the probe state, consistent with the static field being absent for about 10 ps after the ion has come to rest. New and previously published IMPAC data for76Os,77Ir,78Pt and79Au in Fe hosts, are examined to assess whether such measurements may be sensitive to the thermal spike created at the end of the range of an implanted ion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02150191
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Systematic measurements of transient fields for W, Os and Pt ions traversing Fe (1994)
    Springer
    Hyperfine interactions 88 (1994), S. 97-119 
    Details
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Transient magnetic fields were measured for W, Os and Pt ions traversing iron hosts with average velocities in the range from approximately 1.6v 0 to 4.8v 0 (v 0=c/137, Bohr velocity). Transient fields for W and Os in Fe are consistent with behaviour found for lighter rare-earth ions and are about 20% stronger than those for Pt in Fe over the majority of the velocity range examined. A measurement was made to confirm that possible heavy-ion beam induced attenuations of the transient field are negligible for low-velocity Pt ions excited by Ni beams. Results are discussed in terms of both empirical and model-based parameterizations of the transient field strength.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02068707
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    Paper (German National Licenses)
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