Abstract: A method for generating a response function of a scintillator to incident gamma rays of energy within a range of energies of interest, the method including: obtaining the responses {Si} of the scintillator to a plurality of known radionuclides i (i=1, . . . N), each radionuclide i emitting gamma rays with known energetic properties (Eij, Yij), decomposing, for each radionuclide i, response Si into primary responses of the scintillator Sij=ƒ(?ij, Yij, Xij), each primary response corresponding to the response of the scintillator to a received gamma ray of a known energy Eij for this radionuclide i, deriving from the primary responses {Sij} the response function ƒ(?, X) of the scintillator to an incident gamma ray of any energy E within the range of energies of interest.

Abstract: A method for generating a response function of a scintillator to incident gamma rays of energy within a range of energies of interest, the method including: obtaining the responses {Si} of the scintillator to a plurality of known radionuclides i (i=1, . . . N), each radionuclide i emitting gamma rays with known energetic properties (Eij, Yij), decomposing, for each radionuclide i, response Si into primary responses of the scintillator Sij=ƒ(?ij, Yij, Xij), each primary response corresponding to the response of the scintillator to a received gamma ray of a known energy Eij for this radionuclide i, deriving from the primary responses {Sij} the response function ƒ(?, X) of the scintillator to an incident gamma ray of any energy E within the range of energies of interest.