∶Ce crystal scintillation detectors have been widely used in γ-ray logging due to their high energy resolution and excellent energy response. In this paper
the energy spectra of LaBr
3
∶Ce and Na I(Tl) crystals in γ-ray wells containing uranium-containing natural radionuclides were simulated by MCNP5 program
so as to compare the energy of both. The effects of three different sizes of LaBr
3
∶Ce crystals on γ-ray detection efficiency were investigated. The results show that the energy response of LaBr
3
∶Ce crystal is better than that of Na I(Tl) crystal
and the detection efficiency increases with the increase of crystal length.
E.R. Siciliano,J.H. Ely,R.T. Kouzes,B.D. Milbrath,J.E. Schweppe,D.C. Stromswold.Comparison of PVT and NaI(Tl) scintillators for vehicle portal monitor applications[J].Nuclear Inst. and Methods in Physics Research, A,2005(3).