Is loss-free counting under statistical control?
A new formula for the statistical uncertainty of "loss-free counting" (LFC) is presented. Its validity is demonstrated by comparing with experimental data obtained with a HPGe gamma-ray spectrometer. Also, computer simulation data of nuclear counting with different types of count loss (pileup rejection, extending and nonextending dead time) are in agreement with the predicted counting uncertainty. The proposed formula for LFC uncertainty is applicable to spectrometers with a classical semi-Gaussian pulse-shaping amplifier as well as with a gated-integrator amplifier. Hence, achieving statistical control seems to be a feasible goal.
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SCK-CEN, Belgian Nuclear Research Centre, Mol, Belgium.
D003198:Computer Simulation; D003627:Data Interpretation, Statistical; D015203:Reproducibility of Results