Studies of neutron cross-sections important for spallation experiments using the activation method

20th International School on Nuclear Physics, Neutron Physics and Applications

Vrzalová, J.^1,2 ; Chudoba, P.^1 ; Krása, A.^1 ; Majerle, M.^1 ; Suchopár, M.^1,3 ; Svoboda, O.^1 ; Wagner, V.^1,3

Nuclear Physics Institute of the ASCR, Enear Prague

250 68, Czech Republic^1

Joint Institute for Nuclear Research, Joliot-Curie 6, Dubna

141 980, Russia^2

Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Brehova 7, Prague

115 19, Czech Republic^3

关键词: Accelerator driven system;    Activation method;    Evaluated data;    Fast neutrons;    Measurements of;    Neutron cross sections;    Quasi-monoenergetic;    Threshold reactions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/533/1/012051/pdf
DOI  :  10.1088/1742-6596/533/1/012051

来源: IOP

【 摘 要 】

A series of experiments devoted to studies of neutron cross-sections by activation method was carried out. The cross-sections of various threshold reactions were studied by means of different quasi-monoenergetic neutron sources with energies from 14 MeV up to 100 MeV. Threshold reactions in various materials are among other used to measure fast neutron fields produced during accelerator driven system studies. For this reason our measurements of neutron cross-sections are crucial. At present, neither experimental nor evaluated data above 30 MeV are available for neutron threshold reactions in Au, I and In published in this proceedings. We studied materials in the form of thin foils and compared our data with the calculations preformed using the deterministic code TALYS 1.4.