Patent ID: 9535177
Date: 2017-01-03
CPC Classifications: G01T

Claim:
1. A calibration source for a gamma-ray spectrometer, the calibration source comprising: a scintillator body having a cavity in which a radioactive material is received, the radioactive material comprising a radioactive isotope having a decay transition associated with emission of a radiation particle and a gamma-ray having a known energy; a photodetector optically coupled to the scintillator body and arranged to detect scintillation photons associated with radiation particles emitted from the radioactive material within the cavity of the scintillator body interacting with the scintillator body and to output corresponding detection signals; and a gating circuit arranged to receive the detection signals from the photodetector and to generate a corresponding gating signal and to output the gating signal for receipt by a data acquisition circuit of a gamma-ray spectrometer to indicate that gamma-ray detection in the gamma-ray spectrometer occurring within a time window defined by the gating signal is associated with a decay transition in the radioactive isotope.