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  • Articles: DFG German National Licenses  (2)
  • 1995-1999  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 2 (1998), S. 41-53 
    ISSN: 1434-601X
    Keywords: PACS:25.60.Je Transfer reactions – 21.60.Jz Hartree-Fock and random-phase approximations – 21.10.Gv Mass and neutron distributions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: Low energy single nucleon transfer reactions are proposed as a tool to investigate the structure of nuclei far off stability. Experimental concepts and conditions are discussed, in particular high resolution γ-ray spectroscopy after single nucleon pickup reactions. Nuclear structure is described by Skyrme Hartree-Fock calculations including pairing. As representative examples, binding energies, radii and wave functions for Mg and Sn isotopes are calculated. In the neutron deficient Mg isotopes a proton skin is found. At the neutron driplines the Mg and Sn isotopes develop extended neutron skins. The nuclear structure results are used in DWBA and EFR-DWBA transfer calculations. Single nucleon transfer reactions of 32,36Mg and exotic Sn beams on targets ranging from 2H to 24Mg in inverse kinematics are explored. The one-nucleon transfer cross sections decrease strongly for high-Z targets. An impact parameter analysis shows that the transfer process is selective on the tails of the wave functions. The largest cross sections are obtained for 2H and 9Be targets at incident energies of E lab = 2-5 MeV/u. The energy-momentum dependence is closely related to the special properties of wave functions of weakly bound states. Two-neutron (p,t) stripping reactions are studied for a 6He projectile. A strong competition of sequential and direct processes is found at low energies.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1434-601X
    Keywords: 27.20+n ; 21.10.Ft ; 29.30−h ; 21.60−n
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The longitudinal momentum distribution of7Be was measured after the break-up reaction of8B in C, Al, and Pb targets at 1471 A·MeV. We observed a narrow distribution with a FWHM of (81±6) MeV/c in all targets. The experimental results indicate an extended spatial distribution of the loosely bound proton in8B, and agree with QRPA calculations.
    Type of Medium: Electronic Resource
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