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  • 1995-1999  (3)
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Material
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Recoil properties of radionuclides formed in the photonuclear reactions onnatCu at intermediate energies (1999)
    Springer
    Journal of radioanalytical and nuclear chemistry 239 (1999), S. 133-138 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The recoil properties of 26 radionuclides produced in the photonuclear reactions on Cu at bremsstrahlung end-point energies (E 0) of 250 to 1000 MeV have been investigated using the thick-target thick-catcher method. Kinematic properties of the product nuclei were calculated by the two-step vector velocity model. The calculated mean kinetic energies,T, of product nuclei increase with increase of the mass difference between products and target, reflecting the resonance natures and absorption mechanisms. TheT atE 0≥600 MeV were well reproduced by a calculation performed by PICA code byGabriel andAlsmiller atE 0=400 MeV, except for (γ,xn) products by giant-resonance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02349544
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Inteferences in neutron and photon activation analysis (1999)
    Springer
    Journal of radioanalytical and nuclear chemistry 240 (1999), S. 165-175 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The effect of following interferences was quantitatively assessed in terms of interference factor by irradiating samples together with highly pure reagents at two reactor sites of diferent neutron spectra and fluxes for neutron activation analysis (NAA) and an electron LINAC for photon activation analysis (PAA). The interfering reactions studied are 91) fast neutron-induced reactions, (2) uranium fission (3) (n,γ) reactions of other target elements in NAA, and (4) reactions induced by secondary neutrons in PAA. Corrections for these interferences were successfully applied to the activation analysis of some geological reference rock samples and biological samples.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02349150
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Photon activation analysis of iodine, thallium and uranium in environmental materials (1999)
    Springer
    Journal of radioanalytical and nuclear chemistry 239 (1999), S. 495-500 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Iodine, thallium and uranium were determined by photon activation analysis. Two electron linear accelerators were used for the analysis of several kinds of environmental, biological and geochemical reference materials under different irradiation conditions. Both analytical results for iodine were in good agreement with each other but not with literature values in the case of environmental samples. The results of thallium and uranium agreed well with their reference values. The detectable concentration levels of iodine, thallium and uranium were almost 0.3μg/g.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02349057
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    Paper (German National Licenses)
    Fulltext
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