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  • Digitale Medien  (3)
  • 1980-1984  (1)
  • 1975-1979  (2)
Datenquelle
Materialart
  • Digitale Medien  (3)
Erscheinungszeitraum
Jahr
  • 1
    Digitale Medien
    Digitale Medien
    Elastic scattering of35Cl from27Al,58, 62Ni,116, 120, 124Sn and141Pr (1978)
    Springer
    The European physical journal 284 (1978), S. 343-350 
    Details
    ISSN: 1434-601X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Elastic scattering angular distributions for35Cl from27Al,58, 62Ni,116, 120, 124Sn and141Pr have been measured at energies between 100 and 170 MeV. Optical model analyses have been performed to determine reaction cross sections, strong absorption radii and grazing angular momenta. The results are compared with the corresponding quantities extracted by means of the Fresnel scattering model. Near the interaction barrier the quarter point method yields reaction cross sections systematically smaller than the optical model results. The interaction radii, however, do not show significant differences or energy dependencies. These radii are compared with trend formulae for interaction radii, and comparisons with fusion radii are made.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01406807
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  • 2
    Digitale Medien
    Digitale Medien
    Investigation of α-induced reactions on niobium and tantalum (1982)
    Springer
    The European physical journal 308 (1982), S. 301-313 
    Details
    ISSN: 1434-601X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Excitation functions of (α,xn yp) reactions on93Nb withy≦6 andx≦10 have been measured in four different irradiations from 16 to 171 MeV bombarding energy by Ge(Li) spectroscopy of the residual activity of stacked foils. Similarly, previous measurements of181Ta(α,x n y p) reactions from 15 to 103 MeV were extended up to 170 MeVα-energy for residual nuclei withy≦4 andx≦12. Including isomeric states a total number of 37 residual activities could be identified in93Nb+α. From the rather complexγ-decay spectra altogether 28 different excitation functions of sizable length could be established. For181Ta+α 10 different residual activities were analyzed so that together with the former data a set of 15 excitation functions is available. The whole set of excitation functions provides a large data basis for probing the validity of combined equilibrium and preequilibrium reaction models in a wide energy range.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01415879
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  • 3
    Digitale Medien
    Digitale Medien
    An upper limit for the (α, π −) reaction on181Ta (1975)
    Springer
    The European physical journal 273 (1975), S. 381-384 
    Details
    ISSN: 1434-601X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract In order to search for traces of the181Ta(α, π −)185Os reaction a foil stack of very pure tantalum was bombarded with anα-beam of 173 MeV. A radiochemical separation method was applied to four parts of the stack. So two sources corresponding to energies above and below the (α, π −) threshold were obtained and searched for contents of185Os. Using a well shielded Ge(Li) detector weak 646 keV transitions belonging to185Os were observed for all samples. Since the origin of this activity is uncertain for the samples below threshold only an upper limit of 100 nb can be set for the (α, π −) reaction on181Ta above threshold.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01435580
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