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  • 25.70.B  (1)
  • 25.70.Cd  (1)
  • 1
    Digitale Medien
    Digitale Medien
    Pairing effects in nucleon transfer reactions in the system144Sm+88Sr at 4.7 MeV/u (1990)
    Springer
    The European physical journal 336 (1990), S. 71-89 
    Details
    ISSN: 1434-601X
    Schlagwort(e): 24.10-i ; 25.70.Cd
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Proton and neutron transfer populating low-lying states have been studied in the system144Sm+88Sr at an energy below the Coulomb barrier. The experimental cross sections for the single proton transfer are well reproduced by DWBA-calculations using spectroscopic information from light ion reactions. The two-proton transfer appears enhanced relative to the uncorrelated sequential transfer of single protons. The same holds for the transfer of proton pairs, the enhancement is kept for the second pair. This is interpreted as a supercurrent between two superfluid nuclear proton-pair wave functions: more mass and charge is transported per time unit in pairs than by single nucleons. Neutron transfer is observed with large cross sections and is found to contribute to the energy loss observed in the transfer reactions. For mixed proton-neutron transfers the sequential nature of the transfer reactions is established in a similar way as for the two-proton and two-neutron transfer; in the latter case no enhancement is observed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01904165
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  • 2
    Digitale Medien
    Digitale Medien
    Inelastic excitation and nucleon transfer in quasielastic reactions between86Kr and208Pb at 18.2 MeV/u beam energy (1987)
    Springer
    The European physical journal 328 (1987), S. 205-217 
    Details
    ISSN: 1434-601X
    Schlagwort(e): 25.70.B ; 25.70.D
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Angular distributions for inelastic scattering, for 1 and 2-nucleon transfer reactions were studied at 18.2 MeV/u beam energy. Owing to sequential decay of excited reaction products the nuclide yield measured at various angles and in different regions of total kinetic energy loss (TKEL) does not represent the yield of primordial nuclides A Z. Monte Carlo calculations were applied in order to reconstruct the primary double-differential cross-sections d2σ/dΩdTKEL for values of TKEL up to 80 MeV. By comparing the probability of inelastic scattering and that of transfer reactions it is found that the former dominates for TKEL〈 10 MeV, whereas the situation is reversed above 20 MeV. No evidence is found for the excitation of giant resonances with significant cross section.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01290663
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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