NaI(Tl plus Li) scintillator as multirange energies neutron detector

Novel NaIL detector (5 x 6 inch) was investigated for its neutron detection in wide energy range. It has been found that the detector together with its known ability to detect the gamma-radiation it also allows to distinguish neutron signals in three quasi-independent ways. It is sensitive to neutron fluxes on a level down to 10(-3) cm(-2) s(-1). In this work intrinsic alpha-background and neutron detection sensitivity for the NaIL detector were obtained. Experimental data was compared with results of Geant4 Monte Carlo (MC).