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  • 24.10.Eq  (1)
  • 24.60.+ m  (1)
  • 25.70.B  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Simultaneous and sequential transfer of proton and alpha-particle in elastic11B+16O scattering (1992)
    Springer
    The European physical journal 342 (1992), S. 149-159 
    Details
    ISSN: 1434-601X
    Keywords: 24.10.Eq ; 24.50.+g ; 25.70.Bc
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We have developed a method to treat multi-nucleon transfer as the transfer of two — possibly different — subclusters, as e.g. with “5Li”=(αp). As a consequence we take into account two reaction mechanisms, the one-step simultaneous and the two-step sequential transfer of the two clusters. We formulate the method of calculation of the simultaneous transfer form factor for two non-identical particles and also of the two-cluster spectroscopic amplitudes from shell model wave functions. We apply the method to the elastic transfer reaction11B(16O,11B)11O together with the single α andp transfer reaction11B(16O,15N)12C forE lab between 30 and 60 MeV. We obtain a consistently good description of all the data by reasonable adjustment of the spectroscopic amplitudes. In particular we find that the simultaneous (αp) transfer is considerably more important than the sequential transfer indicating strong five-nucleon correlations in these light nuclei.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01288463
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    7Li-7Li elastic and inelastic scattering at Elab=8–17 MeV (1993)
    Springer
    The European physical journal 346 (1993), S. 47-61 
    Details
    ISSN: 1434-601X
    Keywords: 25.70.B ; 25.70.H
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Elastic and inelastic scattering in the system7Li+7Li was investigated experimentally in the energy range of Elab=8–17 MeV applying the method of kinematic coincidence. Sizeable cross sections were observed in the whole energy range for inelastic excitation of a single7Li nucleus to its first excited state atE *=0.47761 MeV as well as for mutual excitation of both nuclei. Systematic optical model and both one-step and two-step DWBA calculations were performed with the aim of describing in a consistent manner all three channels studied. This was achieved with optical model potentials fitted simultaneously to all elastic scattering data. They were then used to generate form factors for both single and mutual inelastic scattering as well as distorted waves for DWBA description of inelastic scattering considering the same deformation length for all form factors. Potential parameters derived show, despite these constraints, a continuous ambiguity in case of volume absorption while those with surface absorption can be grouped in six distinct families each of them featuring continuous ambiguities. The impact of real and imaginary form factors on single inelastic excitation is reversed for potentials with volume and surface absorption, while mutual excitation is dominated by imaginary form factors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01290781
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Mechanism of reactions induced by 7 MeV deuterons on9Be [(d, p), (d, d), (d, t), (d,4He)] (1989)
    Springer
    The European physical journal 333 (1989), S. 271-279 
    Details
    ISSN: 1434-601X
    Keywords: 24.50.+g ; 24.60.+ m ; 25.50.−n
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Angular distributions of protons, deuterons, tritons and alpha-particles emitted from the reactions in thed+9Be-system atE d =7 MeV as well as excitation functions at selected angles in the energy rangeE d =6.5–7.5 MeV (LAB) were measured. The potential part of the elastic scattering is described by the phenomenological optical model. The compound nucleus contribution to all exit channels is determined using the Hauser-Feshbach model. The collective excitation of the 2.43 MeV excited state of9Be and transfer processes are analysed within the DWBA formalism. The analyses suggest a significant contribution of five-nucleon transfer to the (d,4He) channel.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01294515
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    Paper (German National Licenses)
    Fulltext
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