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  • 23.90.+w Other topics in radioactive decay and in-beam spectroscopy  (1)
  • PACS. 25.70.-z Low and intermediate energy heavy-ion reactions – 25.60.Je Transfer reactions – 25.10.+s Nuclear involving few-nucleon systems  (1)
  • PACS: 25.70.Hi Transfer reactions  (1)
  • PACS:21.10.-k Properties of nuclei; nuclear energy levels – 21.10.Dr Binding energies and masses – 25.70.Hi Transfer reactions – 27.20.+n 6 ≤ A ≤ 19  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Spectroscopy of 13B, 14B, 15B and 16B using multi-nucleon transfer reactions (2000)
    Springer
    The European physical journal 7 (2000), S. 451-461 
    Details
    ISSN: 1434-601X
    Keywords: PACS:21.10.-k Properties of nuclei; nuclear energy levels – 21.10.Dr Binding energies and masses – 25.70.Hi Transfer reactions – 27.20.+n 6 ≤ A ≤ 19
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: New information has been obtained on excited states of the neutron-rich boron isotopes 14B, 15B and 16B, using the reactions 12C(14C,12N)14B, 13C(14C,12N)15B and 14C(14C,12N)16B at about 24 MeV/A. The mass excess of 16B has been measured for the first time, it is 37.08(6) MeV. This means that 16B is unbound by only 0.04(6) MeV. Furthermore, the nucleus 13B has been investigated with the four reactions 16O(14C,17F), 12C(14C,13N), 12C(13C,12N) and 12C(15N,14O). Choosing different target-projectile combinations, it was possible to populate states with different selectivity. New states are observed in 13B at excitation energies above the threshold for two-neutron decay.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/PL00013641
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Strong enhancement of two-neutron transfer in the system 206Pb+118Sn (1999)
    Springer
    The European physical journal 4 (1999), S. 313-317 
    Details
    ISSN: 1434-601X
    Keywords: PACS: 25.70.Hi Transfer reactions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: One and two neutron transfer has been measured in the heaviest asymmetric nuclear system with semi magic nuclei showing superfluid properties, in 206Pb+118Sn collisions at an energy well below the Coulomb barrier with scattering orbits covering the largest angles. Particle-γ coincidence techniques using 5 Euroball-Cluster detectors (EB) combined in a set-up with the Heidelberg-Darmstadt NaI-Crystal Ball (CB) have been used. Transfer channels are identified with EB via their known γ-decays of the lowest excited states. Using the unique feature of the set-up with the CB, transfer to well defined final states with known quantum numbers (without feeding) are selected using the high efficiency multiplicity filter of the CB (no second γ-ray). The data are analysed using the semiclassical approach and transfer probabilities are obtained. The enhancement for the two-neutron transfer populating the low lying superfluid 2+ state in 120Sn (and 116Sn), while the Pb-branch is in the groundstate is deduced by comparison with the strongest single neutron transfer transition. Large enhancements (EF ≃ 103) are observed. This is the first direct measurement of enhancement for a heavy nuclear binary system with experimentally separated levels suggesting a strong contribution from superfluid pair transfer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100500050236
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  • 3
    Electronic Resource
    Electronic Resource
    One- and two-neutron transfer reactions on 12C with the weakly bound 6He projectile (2000)
    Springer
    The European physical journal 8 (2000), S. 501-510 
    Details
    ISSN: 1434-601X
    Keywords: PACS. 25.70.-z Low and intermediate energy heavy-ion reactions – 25.60.Je Transfer reactions – 25.10.+s Nuclear involving few-nucleon systems
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: Using the framework of the coupled reaction channels (CRC) the one- and two-neutron transfer process initiated by the weakly bound nucleus 6He on 12C at an energy of E L = 5.9 MeV is studied. The absolute cross-sections for a few states in 14C are well reproduced within a factor 2 in second order, using microscopic wave functions of 6He and 12C. Only a small dependence of the cross-section on details of the 6He wave function is observed. Good fits to the data are obtained in a calculation with full coupling (25 iterations) with renormalised optical potential parameters and spectroscopic amplitudes of 6He.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100500070073
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  • 4
    Electronic Resource
    Electronic Resource
    Emission of unbound 8Be and 12C * (0+2) clusters in compound nucleus reactions (2005)
    Springer
    The European physical journal 23 (2005), S. 19-31 
    Details
    ISSN: 1434-601X
    Keywords: 21.60.Gx Cluster models ; 23.90.+w Other topics in radioactive decay and in-beam spectroscopy ; 25.70.Gh Compound nucleus ; 25.70.Pq Multifragment emission and correlations
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract. We have studied the emission of light unbound clusters, 8Be and 12C * (0+2), in the reactions 18O + 13C →{31} Si →{23} Ne + 8Be and 28Si + 24Mg →{52} Fe →{40} Ca + 12C * (0+2). The γ-ray spectra obtained in coincidence with 8Be and 12C * (0+2) emission have been studied relative to the statistical emission of two or three α-particles. The angular-momentum-to-energy balance of the cluster emission is compared with that of multiple-α emission. The properties of the energy spectra of the binary process and the population of the residual nuclei by cluster emission are discussed. It is observed that cluster emission carries away less excitation energy on average than the sequential emission of the individual components.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1140/epja/i2004-10071-3
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    Paper (German National Licenses)
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