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  • 1980-1984  (3)
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Material
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Formation and decay of the compound nucleus studied in the reaction20Ne+27Al (1983)
    Springer
    The European physical journal 313 (1983), S. 39-49 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Energy and velocity spectra, angular and mass distributions have been measured for evaporation residue products of the20, 22Ne+27Al system in the energy range ofE L (20Ne)=51 to 395 MeV and in the angular rangeθ=2° and 30°. Calculations with simple assumptions of the velocity and angular distributions of the evaporation residues are presented and compared to the data. The structure seen in the mass distributions, a competition between α-particle and nucleon evaporation in the deexcitation of the compound nucleus, is described well by calculations with the computer code CASCADE. The evaporation residues exhibit mass distributions varying systematically as a function of the excitation energy. The excitation function of the evaporation residue cross section is compared with theoretical models. At higher incident energies contributions of incomplete momentum transfer (incomplete fusion) are observed. A limitation for complete compound nucleus formation with following light particle evaporation is found.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02115841
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Analysis of the evaporation-corrected mass and charge distributions in the Ar+Mo reactions (1983)
    Springer
    The European physical journal 313 (1983), S. 19-29 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Partly and strongly damped fragments from the reactions36Ar+92Mo and40Ar+100Mo are measured atE Lab=270 MeV. The extracted mass and charge distributions are carefully corrected forγ, n, p andα particle evaporation. The resulting primary distributions are analysed with theoretical models which assume statistical neutron and proton exchange on the potential energy surface of the projectile-target system. Dynamical-deformation effects in the framework of the surface friction model are included.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02115839
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    On the fusion dynamics of40Ar+40Ca — Fusion-fission and fusion-evaporation (1983)
    Springer
    The European physical journal 313 (1983), S. 57-67 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Evaporation residue measurements have been made for the40Ar+40Ca system at high incident energies,E Lab=161, 190, 236 and 273 MeV. A dynamical description of the fusion process is presented, where in a trajectory model both rotational and neck degrees-of-freedom are included. Using this model maximuml-values for fusion are determined and at high incident energies are found to be significantly lower than those found when using the more usual one-dimensional effective nucleus-nucleus potential. The fusion cross sections minus the fission component yields evaporation residue cross sections that are in good agreement with the data. Also, mass distributions of the evaporation residues compare well with statistical-decay model predictions. A comparison is made with the similarly mass-symmetric40Ca+40Ca system.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02115843
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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