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  • 1980-1984  (2)
  • 1970-1974
  • 1981  (2)
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  • 1980-1984  (2)
  • 1970-1974
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  • 1
    Digitale Medien
    Digitale Medien
    Comment on fusion cross sections in the40Ar+40Ca and40Ca+40Ca systems (1981)
    Springer
    The European physical journal 302 (1981), S. 365-366 
    Details
    ISSN: 1434-601X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Cross sections for the production of evaporation residues in a fusion reaction have been extracted from measurements of cross sections for elastic, quasi-elastic and deep inelastic scattering of40Ar projectiles on40Ca target nuclei at incident energies ELAB=191, 236 and 272 MeV. The extracted data are compared with the predictions of a one-body window-friction model including a neck configuration in the interaction phase between the projectile and target nuclei. Furthermore, the results for the40Ar+40Ca system are compared to those obtained in the similarly mass-symmetric system40Ca+40Ca where directly measured evaporation residue data are available. The fusion reaction in heavy ion collisions has so far been studied mostly at low incident energies and for systems where the fusion cross section is in good approximation given by the cross section for evaporation residues [1]. This approximation has been verified only for heavy interacting systems (A〉 100 for the combined system). In this paper we comment on the problems of fusion cross sections for the lighter projectile-target combination40Ar+40a and give evidence that this approximation may not be generally valid.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01414272
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  • 2
    Digitale Medien
    Digitale Medien
    Measurement of theK-shell fluorescence yield of13Al,20Ca,23V and25Mn for vacancies produced by the relativistic electron impact (1981)
    Springer
    The European physical journal 300 (1981), S. 103-104 
    Details
    ISSN: 1434-601X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract The K-shell fluorescence yield of Al, Ca, V and Mn has been measured by bombarding thin solid targets of 0.5–4.0μg/cm2 on 6–10μg/cm2 carbon backing with relativistic electrons of 30 and 60 MeV and by simultaneous detection of the x-ray and Auger yield by means of a Si(Li) detector and an electrostatic electron spectrometer, respectively. While the values obtained for25Mn (ωK=0.310 −0.020 +0.023 ) and23V(ωK=0.252 −0.018 +0.020 ) agree within their accuracy with known experimental and theoretical data, are the values of20Ca (ωK=0.127 −0.011 +0.013 ) and13Al(ωK=0.027±0.005) lower than experimental or recommended empirical values.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01412621
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