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  • 1
    Electronic Resource
    Electronic Resource
    Selection of cold transfer and enhanced neutron-pair transfer in the 206 Pb + 118 Sn reaction (2003)
    Springer
    The European physical journal 20 (2003), S. 153-156 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract. The neutron transfer in a very heavy asymmetric nuclear system, in 206 Pb + 118 Sn has been measured using particle- $\gamma$ coincidence techniques with position-sensitive detectors, 5 EUROBALL-Cluster detectors (EB) and the Heidelberg-Darmstadt NaI-CRYSTAL BALL (CB). The fragments are identified via the known $\gamma$ -decays of the lowest excited states using the high resolution of EB. Using the unique feature of the set-up with the CB, transfer to well-defined final channels with known quantum numbers is selected using the high-efficiency multiplicity filter of the CB with no second $\gamma$ -ray, i.e. without feeding. The enhancement in the two-neutron transfer is deduced, for population of the low-lying super-fluid 2 + states in 120 Sn and 116 Sn, while the 2n-transition remains in the ground state for the recoiling 20X Pb-nuclei. Large enhancements up to EF $\simeq 10^3$ are observed. This is the first observation of neutron pair-transfer enhancement for a heavy nuclear binary system with superfluid properties with experimentally separated levels.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1140/epja/i2002-10342-y
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  • 2
    Electronic Resource
    Electronic Resource
    Enhanced excitation of giant pairing vibrations in heavy-ion reactions induced by weakly bound projectiles (2002)
    Springer
    The European physical journal 14 (2002), S. 37-42 
    Details
    ISSN: 1434-601X
    Keywords: PACS. 21.60.Ev Collective models – 25.60.Je Transfer reactions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: The use of radioactive ion beams is shown to offer the possibility to study collective pairing states at high excitation energy, which are not usually accessible with stable projectiles because of large energy mismatch. In the case of two-neutron stripping reactions induced by 6He, we predict a population of the giant pairing vibration in 208Pb or 116Sn with cross-sections of the order of a millibarn, dominating over the mismatched transition to the ground state.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1140/epja/iepja1348
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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
    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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