Patent ID: 7547887

Claim:
A gamma ray spectrometer comprising: a gamma ray detector comprising: a plastic scintillation body for receiving gamma rays and creating photons therefrom, the scintillation body having a detection surface arranged to receive gamma rays and a thickness in a direction substantially orthogonal to the detection surface that is not greater than 5 cm; and at least one photodetector arranged to detect the photons and operable to generate an output signal in response to the detected photons that is related to energy deposited in the scintillation body by received gamma rays; and further comprising a processor provided with a response function representing a response of the detector to received gamma rays as a function of gamma ray energy, the processor operable to receive the output signal and use the response function and the output signal in a deconvolution process to determine an improved output signal that better represents the energy spectrum of incident gamma rays.