Note on the comparison of experimental and simulated gamma energy spectra for NaI with 137Cs, 60Co, and 241Am

Experimental and simulated energy spectra of 137Cs, 60Co, and 241Am standard gamma sources were acquired. A spectrometer consisting of a NaI(Tl) scintillation detector was used to obtain experimental spectra. The theoretical energy spectra were acquired by means of FLUKA Monte Carlo (MC) simulations, and the comparison between the experimental and simulated spectra was performed with the ROOT program. Spectral results such as energy resolution, counting efficiency, peak to total, peak to Compton and peak to valley values were compared. Good agreement between the experimental and simulated spectra was performed with the ROOT program. Good agreement between the experimental and simulated results was obtained.