Neutron cross-section measurements in the Th-U cycle by the activation method

D. Karamanis, S. Andriamonje, P. A. Assimakopoulos, G. Doukellis, D. A. Karademos, A. Karydas, M. Kokkoris, S. Kossionides, N. G. Nicolis, C. Papachristodoulou, C. T. Papadopoulos, N. Patronis, P. Pavlopoulos, G. Perdikakis, R. Vlastou

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Abstract

The 232Th(n,2n)231Th reaction cross-section was measured relative to the 56Fe(n,p)56Mn and 27Al(n,α)24Na reaction cross-sections with the activation method for neutron energies up to 11MeV. Neutrons were produced by the 2H(d,n) reaction in the 5.5MV Tandem accelerator of the NCSR "Demokritos". The characteristic γ lines of the product nuclei 231Th (25.646keV) and 56Mn (846.771keV) or 24Na (1368keV) were measured with an 80mm2 Si(Li) and a 20% reverse-electrode coaxial germanium detector, respectively. The results indicate that our values are in agreement with the JEF2 and BROND2 database values up to 9MeV and slightly higher than those from all the libraries for higher energies.

Original languageEnglish
Pages (from-to)381-384
Number of pages4
JournalNuclear Inst. and Methods in Physics Research, A
Volume505
Issue number1-2
DOIs
StatePublished - Jun 1 2003
EventProceedings of the tenth Symposium on Radiation - Ann Arbor, MI, United States
Duration: May 21 2002May 23 2002

Keywords

  • Activation
  • Th-U cycle
  • Thorium neutron interaction

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