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  • 1985-1989  (1)
  • 1975-1979  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Some (γ, 1p × n) reactions in118Sn at intermediate energies (1975)
    Springer
    The European physical journal 275 (1975), S. 261-267 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Yield curves for the production of117g In,117m In,116m1In,115m In,113m In,111In,110h In,110l In,109In,108hIn and108lIn from enriches118Sn have been measured by the activation method in the energy region 75–800 MeV. The cross sections have been deduced and for117In,110In and108In isomeric cross section ratios have been determined. The experimental cross sections are compared to calculations with a cascade-evaporation model and to cross sections calculated with a semi-empirical formula. The isomeric ratios are compared to calculations based on the statistical formalism by Huizenga and Vandenbosch together with cascade-evaporation theory. The (γ, p) cross section and isomeric ratio are also compared to calculations based on a direct knock-out formalism.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01409294
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Medium energy proton induced fission in Tb, La and Ag (1979)
    Springer
    The European physical journal 293 (1979), S. 241-251 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Coincidence studies with silicon surface barrier detectors have been used to determine fragment kinetic energies, angular correlations and fission cross sections in the fission of Ag,139La,159Tb and U nuclei induced by 600 MeV protons. Symmetric mass distributions are deduced for Ag and Tb, whereas La shows an indication of a stable asymmetric mass distribution. We find no indication of the Businaro-Gallone point. Fission-spallation competition calculations are used to deduce values of macroscopic fission barrier heights and nuclear level density parameter values at deformations corresponding to the saddle point shapes. We find macroscopic fission barriers lower than those predicted by macroscopic theories. The total kinetic energies at symmetric mass divisions follow closely the Viola prediction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01435593
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    New neutron-rich isotopes of astatine and bismuth (1989)
    Springer
    The European physical journal 333 (1989), S. 131-135 
    Details
    ISSN: 1434-601X
    Keywords: 23.90.+w ; 27.90.+b
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Neutron-rich isotopes of astatine have been produced through spallation reactions with 600 MeV protons on a232Th target and identified by spectroscopic techniques combined with one-line mass separation at the ISOLDE facility. The half-lives of218At and219At have been remeasured to be 1.5(3) s and 57(4) s, respectively. Four new isotopes of astatine,220−223At, have been observed for the first time, and their half-lives were found to be 3.73(13) min, 2.3(2) min, 54(10) s, and 50(7) s, respectively. Another nuclide,216Bi, has been observed for the first time as the daughter product of the220At alpha decay, and its half-life has been measured to be 6.6(21) min.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01565142
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    Paper (German National Licenses)
    Fulltext
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