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  • 21.60  (1)
  • 24.50.+ g  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 335 (1990), S. 417-420 
    ISSN: 1434-601X
    Keywords: 24.50.+ g ; 25.70.Np ; 27.20.+ n
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Inclusive break-up cross sections of the reactions12C (6Li,a)X and208Pb (6Li,a)X at 26 MeV/amu, observed for the emission of break-up fragment into the forward hemisphere, are analysed in view of the information about the internal momentum distribution of the projectile. The longitudinal momentum distribution of the fragments in the projectile rest-frame is found to reflect the internal momentum distribution of the clusters whereas the transverse distribution is affected by the projectile-target interaction.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1434-601X
    Keywords: 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
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: 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.
    Type of Medium: Electronic Resource
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