4-8 July 2016
Kramer Law building
Paper Review: Initial screening in progress
Measurement of 238U fission cross sections using quasi-monoenergetic neutrons with energies from 35 MeV to 100 MeV.
Presented by Mr. Dieter GEDULD on 6 Jul 2016 from 11:50 to 12:10
Type: Oral Presentation
Session: Applied Physics (2)
Track: Track F - Applied Physics
The fast neutron beamline at iThemba LABS is presently proposed to be developed into an accredited facility for fast neutron metrology. Cross sections of neutron-induced reactions on <sup>238</sup>U are very important as reference standards for fast neutron metrology. The cross section of the <sup>238</sup>U(n,f) reaction has been measured for quasi-monoenergetic neutron energies in the range from 35 MeV to 100 MeV using a fission chamber of natural uranium composition. Proton recoil telescopes, composed of thin silicon detectors coupled to a sodium iodide scintillation detectors were utilised for the determination of the incident neutron fluence using the well-known cross sections for n-p elastic scattering. Emphasis during the analyses was placed on data reduction and background subtraction to reduce measurement uncertainty. Presented are the measurements and the calculation method to determine the cross section values.
Prof. A Buffler (University of Cape town)
Location: Kramer Law building
Address: UCT Middle Campus Cape Town
- Prof. Andy BUFFLER University of Cape Town
- Dr. Frederick David SMIT iThemba LABS
- Dr. Rudolph NCHODU University of Cape Town
- Mr. Ralf NOLTE Physiklisch-Technische Bundesanstalt (National Metrology Institute), Germany