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  • 25.70.Cd  (2)
  • 21.10.F  (1)
  • 24.50.+g  (1)
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Schlagwörter
  • 1
    Digitale Medien
    Digitale Medien
    Inclusive measurements of the break-up of 156 MeV6Li-ions at extreme forward angles (1989)
    Springer
    The European physical journal 332 (1989), S. 317-330 
    Details
    ISSN: 1434-601X
    Schlagwort(e): 24.50.+g ; 25.70. Np ; 27.20.+n
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Inclusive alpha particle and deuteron spectra from collisions of 156 MeV6Li-ions with12C and208Pb were measured at extreme forward emission angles including zero degree. The measurements were performed with the Karlsruhe magnetic spectrograph ‘Little John’ and required an efficient reduction of the background from small-angle scattering. The observed double differential cross sections and angular distributions have been analysed on the basis of Serber's spectator break-up model. When going to angles smaller than grazing, where Coulomb effects are expected to be dominating, transitional features may appear. Corresponding effects probably associated with Coulomb break-up are observed with the208Pb-target and require a slight extension of the Serber approach. In the case of the12C-target the break-up cross sections in forward direction seem to reflect the shape of the internal momentum distribution of the alpha particle and deuteron cluster in the6Li-projectile and are in agreement with a 2S-type wave function. However, at larger angles the shape appears to be distorted, possibly by final state interactions.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01295462
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Proton decay of spin isospin modes excited by the12C(6Li,6He)12N reaction (1992)
    Springer
    The European physical journal 344 (1992), S. 269-275 
    Details
    ISSN: 1434-601X
    Schlagwort(e): 25.70.Cd ; 27.20.+ n
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract First investigations of the reaction12C(6Li,6He)-12N(p)11C were used to study spin-isospin strength in the nucleus12N at ELi=156 MeV. While the6He ejectiles were detected at θHe=0° using a magnetic spectrograph, the decay protons were analysed in a wide range of backward angles (100°〈θp〈170°) with an arrangement of semiconductor strip detectors. Singles spectra were extracted as well as coincident excitation strength for the decay to low lying levels in11C. For the decay to the11C ground state angular correlations were evaluated for six different energy regions in12N*.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01303020
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    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
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  • 4
    Digitale Medien
    Digitale Medien
    Single nucleon transfer reactions in6Li+6Li collisions at 156 MeV (1987)
    Springer
    The European physical journal 328 (1987), S. 467-473 
    Details
    ISSN: 1434-601X
    Schlagwort(e): 25.70.Cd ; 25.10.+s
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Single nucleon transfer reactions in collisions of 156 MeV6Li ions with6Li nuclei, leading to unstable final nuclei (5Li,5He) have been experimentally studied. The measured6Li(6Li,7Li)5Ligr and6Li(6Li,7Be)5Hegr differential cross sections have been analysed on the basis of a FR-DWBA procedure, looking to which extent the entrance channel optical potentials may account for the unknown exit channel potentials.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01289633
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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