Patent ID: 7312457

Claim:
A gamma-ray spectrometer having an improved energy resolution by reducing charge-carrier-trapping effects in a detector, said gamma-ray spectrometer comprising: a detector responsive to gamma-ray radiation emitted from a gamma-ray radiation source, said detector for producing a detector output corresponding to absorbed gamma-ray radiation, said detector output having a pulse shape; an analog-to-digital converter in communication with said detector, said analog-to-digital converter for producing a digital output representing said detector output; a pulse shape analyzer circuit in communication with said analog-to-digital converter, said pulse shape analyzer circuit for analyzing said digital output and for producing an analyzer output characteristic of said pulse shape of said detector output; and a digital filter in communication with said analog-to-digital converter and said pulse shape analyzer circuit, said digital filter for applying a charge-carrier-trapping correction function to said digital output, said charge-carrier-trapping correction function being dependent upon said analyzer output, said digital filter for producing a filter output proportional to said detector output and modified by said analyzer output.