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  • 1975-1979  (6)
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Material
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Hyperfine structure of nine levels in two configurations of93Nb (1975)
    Springer
    The European physical journal 275 (1975), S. 197-202 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The experimental data on the hyperfine structure of93Nb are analysed with respect to the effective-operator formalism. Using eigenvectors derived from a least squares fit to the excitation energies of all known levels of the configurations 4d 4 5s and 4d 35s 2 the effective radial parameters of the magnetic dipole and electric quadrupole interaction are determined. The comparison with relativistic calculations gives an estimate of the effects due to configuration interaction. The value found for the nuclear electric quadrupole moment isQ=−0.36(7) barns.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01409284
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Hyperfine structure of nine levels in two configurations of93Nb (1975)
    Springer
    The European physical journal 275 (1975), S. 193-196 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The hyperfine structure of the two multiplets 4d 45s 6 D and 4d 35s 2 4 F of93Nb has been studied by the atomic-beam magnetic-resonance method. After applying corrections due to effects of off-diagonal hyperfine and Zeeman interactions the hyperfine interaction constantsA andB and the electrong factors gJ are determined for all nine levels of the two multiplets.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01409283
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Hyperfine structure and nuclear moments of99Ru and101Ru (1977)
    Springer
    The European physical journal 280 (1977), S. 217-226 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The atomic-beam magnetic-resonance method in combination with the triple resonance technique has been used to determine the nuclear magnetic dipole moments of99Ru and101Ru. The moments are deduced fromrf transition measurements in the5F5 and5F4 states at magnetic fields between 770 and 2400 Oe. In order to reduce the part of the uncertainty of the moments which arises from the uncertainty of the hyperfine structure constants more precise values of the constants than those available up to now were determined from low field measurements. After making corrections for hyperfine and Zeeman interactions with neighbouring atomic states we obtain the following values for the magnetic dipole moments:μ 99=−0.6381 (51)μ N andμ 101=−0.7152 (60)μ N (uncorrected for diamagnetic shielding). The results of the present work combined with the results of an earlier hyperfine structure investigation in the5F multiplet are analysed with respect to the effective-operator formalism. From this analysis we obtain the following values for the electric quadrupole moments:Q 99=0.076 (7) b andQ 101=0.44 (4) b (uncorrected for Sternheimer shielding or antishielding).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01434343
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Magnetic-dipole hyperfine structure in 4d- and 5d-shell atoms (1977)
    Springer
    The European physical journal 283 (1977), S. 303-308 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The magnetic-dipole hyperfine interaction constantsA of low-lying metastable atomic levels in91Zr,181Ta,183W, and191Ir determined from atomic-beam magnetic-resonance investigations are analyzed with respect to the effective-operator formalism. Similar results for other 4d- and 5d-shell atoms are also tabulated. The experimental results for the effective 〈r −3〉 values are compared with relativistic predictions for the 4d N 5s and 5d N 6s 2 series.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01409506
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Hyperfine structure of six low-lying fine structure levels of191Ir and193Ir and the191Δ s 193 hyperfine anomaly (1978)
    Springer
    The European physical journal 286 (1978), S. 333-340 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The hyperfine interaction constantsA andB of six low-lying metastable fine structure states of the two iridium isotopes191Ir and193Ir and the electronicg-factors of these levels have been measured using the atomic-beam magnetic-resonance method. From the values of the magnetic-dipole interaction constantsA, corrected for off-diagonal perturbations, we extracted the hyperfine anomaly of a pure 6s-electron state:191 Δ s 193 =0.64(7)%. Using nonrelativistic approximations for the effective radial parameters the nuclear electric-quadrupole moments were obtained:Q(191Ir) = 0.81(21)b,Q(193Ir)=0.73(19)b
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01408893
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  • 6
    Electronic Resource
    Electronic Resource
    Hyperfine structure of seven atomic levels of91Zr and the91Zr nuclear electric quadrupole moment (1978)
    Springer
    The European physical journal 286 (1978), S. 125-131 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The hyperfine structure of the low-lying atomic levels 4d 2 5s 2 3 F 2, 3, 4 and 4d 3 5s 5 F 2, 3, 4, 5 of91Zr has been studied using the atomic-beam magnetic-resonance method. Using intermediate coupling wave functions derived for the configurations (4d+5s)4 the experimental data are analysed with respect to the effective operator formalism. The effective radial parameters of the magnetic dipole and electric quadrupole interaction are determined for the two configurations 4d 2 5s 2 and 4d 3 5s and are compared with relativistic calculations. The value obtained for the electric quadrupole moment of the91Zr nuclear ground state isQ=− 0.21(2) barn (uncorrected for core polarization effects).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01408965
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    Paper (German National Licenses)
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