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

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

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 c...

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Veröffentlicht in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2003-06, Vol.505 (1-2), p.381-384
Hauptverfasser: Karamanis, D., Andriamonje, S., Assimakopoulos, P.A., Doukellis, G., Karademos, D.A., Karydas, A., Kokkoris, M., Kossionides, S., Nicolis, N.G., Papachristodoulou, C., Papadopoulos, C.T., Patronis, N., Pavlopoulos, P., Perdikakis, G., Vlastou, R.
Format: Artikel
Sprache:eng
Schlagworte:
Activation
Física
Física nuclear
Mesurament
Neutron cross sections
Neutrons
Thorium neutron interaction
Th–U cycle
Àrees temàtiques de la UPC
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Zusammenfassung: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.
ISSN:0168-9002
1872-9576
DOI:10.1016/S0168-9002(03)01102-1