Statistical Uncertainty in Quantitative Neutron Radiography
Florian M. Piegsa, Anders P. Kaestner, Aldo Antognini and, Andreas Eggenberger, Klaus Kirch, Gunther Wichmann
TL;DR
This paper introduces a new calibration method for neutron radiography systems that accurately estimates pixel-wise statistical uncertainties, enabling more precise quantitative analysis of neutron images.
Contribution
The paper presents a novel, efficient calibration procedure to determine Poisson-based uncertainties in neutron radiography, enhancing quantitative analysis accuracy.
Findings
Calibration method successfully estimates pixel-wise uncertainties.
Effective neutron flux at the beam line determined.
Method applied to data from ICON facility.
Abstract
We demonstrate a novel procedure to calibrate neutron detection systems commonly used in standard neutron radiography. This calibration allows determining the uncertainties due to Poisson-like neutron counting statistics for each individual pixel of a radiographic image. The obtained statistical errors are necessary in order to perform a correct quantitative analysis. This fast and convenient method is applied to data measured at the cold neutron radiography facility ICON at the Paul Scherrer Institute. Moreover, from the results the effective neutron flux at the beam line is determined.
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