Bonner sphere spectrometer (BSS) based on
gold foils, as thermal neutron detectors, is one of the
common device for neutron spectrometry. In this paper, the
response functions of the Bonner spheres were determined
for neutrons with energies ranging from thermal up to
20 MeV using Monte Carlo code. To verify the simulated
response functions, the spheres of BSS were irradiated with
241Am-Be neutron source at the Ferdowsi University of
Mashhad and the activities of the gold foils were measured.
Then the artificial neural network was applied for neutron
spectrum unfolding. The results showed a good agreement
between unfolded and reference spectrum of ISO 8529-1.
کلید واژگان :
Bonner sphere spectrometer Monte Carlo Response function Artificial neural network
