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  • 31.30.Gs  (2)
  • 27.60.+j  (1)
  • 31.30.G  (1)
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Schlagwörter
  • 1
    Digitale Medien
    Digitale Medien
    Nuclear radii of thorium isotopes from laser spectroscopy of stored ions (1989)
    Springer
    The European physical journal 334 (1989), S. 103-108 
    Details
    ISSN: 1434-601X
    Schlagwort(e): 21.10.F ; 21.60 ; 27.90 ; 29.90 ; 31.30.G ; 32.50.F ; 32.80.K ; 35.10.F ; 35.80 ; 42.60.K
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Isotope shifts and hyperfine splittings in optical transitions for atomic ions of the thorium isotopes227Th to230Th and232Th have been measured by laser spectroscopy on stored ions. From the isotope shift data, changes of the mean square charge radii are determined. A continuous increase of the charge radius with mass numberA is observed, in agreement with droplet model calculations. The results indicate that the odd-even staggering for Th is different from that one of the neighbouring isotones of Fr and Ra. There is some empirical evidence from systematics for an inversion of the staggering and the appearance of an octupole deformation atN ≦137. The hyperfine splitting for229Th for 3 electronic levels is given.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01294392
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Determination of the242m Am nuclear moments (1988)
    Springer
    The European physical journal 330 (1988), S. 235-239 
    Details
    ISSN: 1434-601X
    Schlagwort(e): 21.10.Ky ; 27.90.+b ; 35.10.Fk ; 35.80.+s ; 31.30.Gs ; 29.90.+r
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract The hyperfine structure of Am atoms was investigated in an atomic beam by laser spectroscopy. The observed splittings were evaluated with respect to the magnetic dipole and electric quadrupole moments of242m Am. The results are: μ I (242m Am)=+0.97(5)nm,Q(242m Am)=+6.5(2.0)b.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01294866
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Charge radii and moments of strontium nuclei by laser spectroscopy (1987)
    Springer
    The European physical journal 326 (1987), S. 493-500 
    Details
    ISSN: 1434-601X
    Schlagwort(e): 21.10.Ft ; 21.10.Ky ; 27.50. +e ; 27.60.+j ; 35.10.Fk ; 35.80. +s ; 25.55.−e
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract The isotope shifts and hyperfine splittings for 11 strontium isotopes (A=80–90) and two isomers for the optical transition λ=293.2 nm were measured. The magnetic dipole and electric quadrupole moments and the changes of the mean square charge radii are derived. The results are discussed with respect to the increasing nuclear deformation and the anomalous coupling scheme of light Sr nuclei.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01289554
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 4
    Digitale Medien
    Digitale Medien
    The 3d states of23Na and7Li: determination of unresolved hyperfine splittings and radiative lifetimes (1988)
    Springer
    The European physical journal 8 (1988), S. 109-118 
    Details
    ISSN: 1434-6079
    Schlagwort(e): 07.65.Eh ; 31.30.Gs ; 31.50.+w ; 32.70.Cs ; 32.70.Fw ; 32.70.Jz ; 32.30.Jc ; 35.10.Fk ; 42.65.Ft
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract The electronic transitions from the ground state to the 3d states have been studied for23Na and7Li atoms by two-photon Doppler-free laser spectroscopy. The positions of the resonances are used to determine the unresolved hyperfine structure of the 3d states from which the magnetic-dipole hyperfine interaction constantsA are derived. The results for theA factors are:A(3d 2 D 3/2;23Na)=+527(25) kHz;A(3d 2 D 5/2;23Na)=+108.5(2.4) kHz;A(3d 2 D 3/2;7Li)=+843(41) kHz;A(3d 2 D 5/2;7Li)=+343.6(1.0) kHz. For the fine structure intervals fs of the 3d doublets we obtain: fs(3d Na)=-1 494 444(44) kHz and fs(3d Li)=+1 083 936(60) kHz. The linewidths of the resonances are evaluated with respect to the natural lifetimes of the 3d states. For Na the result is τ(3d Na)=19.27(23) ns.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01384502
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