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  • 21.60.−n  (1)
  • aluminum clusters  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Pair Correlations and Magnetic Susceptibility of Small Al-Grains (1999)
    Springer
    Journal of cluster science 10 (1999), S. 195-220 
    Details
    ISSN: 1572-8862
    Keywords: Magnetic susceptibility ; pair correlations ; aluminum clusters
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Pair correlations and the magnetic susceptibility of electrons in a spherical cavity are studied both for grand canonical and the canonical ensemble. The coupling constant of the BCS Hamiltonian is adjusted to experimental values of the gap parameter. The gap parameter is found to increase for small grains as a consequence of the pronounced shell structure in the spectrum of the spherical cavity. The sharp phase transition at Tc is smeared out for the canonical ensemble. The strong paramagnetic susceptibility of the normal electrons in the cavity is reduced by the superconductivity, but it remains positive.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1022617104452
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Interaction strength and shape difference for the h9/2 and h11/2 configurations in163Tm (1991)
    Springer
    The European physical journal 340 (1991), S. 351-362 
    Details
    ISSN: 1434-601X
    Keywords: 21.10.−K ; 21.60.−n ; 25.70.−z ; 27.70.+q
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The strongly shape driving πh9/2[541]l/2− configuration with α=+1/2 exhibits some anomalous, and so far unexplained, features concerning the crossing frequency, ħωc, the aligned angular momentum, ix, and interaction strength, at the alignment of the first pair of i13/2 quasineutrons in several odd-Z rare earth-nuclei. The h9/2[541]1/2− and h11/2[523]7/2− bands have been studied in the stably deformed rare-earth nucleus163Tm to investigate these features. A difference in band crossing frequency of ∼ 80 keV between the two bands is found. Rotational bands built on these two configurations have been found to cross in the spin range I=25/2–29/2 ħ. Theγ-decay pattern between the two bands is established in the crossing region and analysed in terms of a moderate shape difference between them. A theoretical estimate of the size of the interaction strength between the two bands is presented and compared to the experimental value. The observed band structure in163Tm is very similar to that of167Lu which has 2 protons and 2 neutrons in addition. This observation is discussed in relation to the similarity of the yrast bands of the two even-even “core” nuclei162Er and166Yb, for which theγ-transition energies are identical within ∼0.2 keV below the vi13/2 crossing.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01290322
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    Paper (German National Licenses)
    Fulltext
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