1.
Appl Radiat Isot
; 129: 28-34, 2017 Nov.
Artigo
em Inglês
| MEDLINE
| ID: mdl-28802155
RESUMO
We present a methodology to obtain the energy distribution of the neutron flux of an experimental nuclear reactor, using multi-foil activation measurements and the Expectation Maximization unfolding algorithm, which is presented as an alternative to well known unfolding methods such as GRAVEL. Self-shielding flux corrections for energy bin groups were obtained using MCNP6 Monte Carlo simulations. We have made studies at the at the Dry Tube of RECH-1 obtaining fluxes of 1.5(4)×1013cm-2s-1 for the thermal neutron energy region, 1.9(5)×1012cm-2s-1 for the epithermal neutron energy region, and 4.3(11)×1011cm-2s-1 for the fast neutron energy region.