Abstract
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 γ-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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References
J. Harms, Automatic dead-time correction for multichannel pulse-height analysers at variable counting rates,Nucl. lustrum. Methods 53, 192–196 (1967).
G. P. Westphal, On the performance of loss-free counting—a method for real-time compensation of dead-time and pile-up losses in nuclear pulse spectroscopy,Nucl. Instrum. and Methods 163, 189–196 (1979).
G. P. Westphal, Real-time correction of counting losses in nuclear pulse spectroscopy,J. Radioanal. Chem. 70, 387–410 (1982).
G. P. Westphal, Instrumental correction of counting losses in nuclear pulse spectroscopy,Nucl. Instrum. Methods B10/11, 1047–1050 (1985).
S. Pommé, J-P. Alzetta, J. Uyttenhove, B. Denecke, G. Arana, and P. Robouch, Accuracy and precision of loss-free counting in gamma-spectrometry,Nucl. Instrum. Methods A422, 388–394 (1999).
K. Heydorn and E. Damsgaard, Validation of a loss-free counting system for neutron activation analysis with short-lived indicators,J. Radioanal. Nucl. Chem. 215, 157–160 (1997).
S. Pommé, Pulse pileup and system dead time: Fundamental aspects of experimental uncertainty, in Proceedings of the 2nd Internationalk0 Users Workshop, Ljubljana, Slovenia, (1996) Ljubljana, Slovenia, pp. 11–14.
S. Pommé, F. Hardeman, P. Robouch, N. Etxebarria, and G. Arana, Neutron activation analysis with k0-standardisation: general formalism and procedure, Internal report SCK·CEN, BLG-700, 1987.
S. Pommé, Time distortion of a Poisson process and its effect on experimental uncertainty,Appl. Radiat. Isotopes 49, 1213–1218 (1998).
Particle counting in radioactivity measurements, International Commission on Radiation Units and Measurements, Report 52 (1994).
S. Pommé, B. Denecke, and J-P. Alzetta, Influence of pileup rejection on nuclear counting, viewed from the time domain perspective,Nucl. Instrum. Methods A 426, 564–582 (1999).
S. Pommé, How pileup rejection affects the precision of loss-free counting,Nucl. Instrum. Methods A432, 456–470 (1999).
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Pommé, S. Is loss-free counting under statistical control?. Biol Trace Elem Res 71, 415–422 (1999). https://doi.org/10.1007/BF02784229
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DOI: https://doi.org/10.1007/BF02784229