Sökning: "Andreas Oberstedt"

Hittade 3 avhandlingar innehållade orden Andreas Oberstedt.

  1. 1. Determination of binary fission-fragment yields in the reaction 251Cf(nth, f) and Verification of nuclear reaction theory predictions of fission-fragment distributions in the reaction 238U(n, f)

    Författare :Evert Birgersson; Andreas Oberstedt; Stephan Oberstedt; Nicolae Carjan; Örebro universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; nuclear reactions; mass energy distributions; fission modes; fission-fragment spectroscopy; 251Cf nth; f ; 238U n; f ; Physics; Fysik; Fysik; Physics;

    Sammanfattning : Neutron-induced fission has been studied at different excitation energies of the compound nucleus by measurements on the two fissioning systems, 252Cf* and 239U*.For the first time, the light fission fragment yields from the reaction 251Cf(nth, f) have been measured with high resolution. LÄS MER

  3. 2. Optimisation of radiographic imaging by means of factorial experiments

    Författare :Eva Norrman; Jan Persliden; Andreas Oberstedt; Bertil Axelsson; Örebro universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; Fysik; Fysik; Physics;

    Sammanfattning : In the optimisation process of radiographic imaging, factorial designed experiments can be applied. The parameters (factors) are varied together instead of one at a time, making it possible to discover interactions between the factors as well as main influences of them on the result variable. LÄS MER

  4. 3. The neutron-induced fission cross section of 233Pa : and the quest for clean and safe nuclear energy

    Författare :Fredrik Tovesson; Andreas Oberstedt; Dietrich Hilscher; Örebro universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Fysik; fission; cross section; Pa-233; U-233; fysik; Physics; Fysik; Fysik; Physics;

    Sammanfattning : Neutron-induced fission of 233Pa has been investigated between 1.0 and 8.5 MeV, and the reaction cross section was determined. Due to the short half-life of 233Pa for β-decay, fission events from the daughter product 233U affect the analysis of the protactinium experiment. LÄS MER