Measurement Uncertainty in Open Geometry
The evaluation of measurements in open geometry according to Filß is based on the model description
\[ A = M \cdot \left[ \frac{1}{\epsilon} \cdot \frac{1}{\eta} \cdot \left( \frac{\mu }{\rho} \right) \cdot \frac{1}{F_0} \cdot \frac{K_2}{K_1} \right] \cdot Z \]
for large distances S and dense matrices. It takes into account DIN ISO 11929 in its version of November 2021.
Information on how to use the tool can be found at the end of the page.
Messung in offener Geometrie
Usage
The tool is used to evaluate a measurement in open geometry for one characteristic gamma line. Information on the individual data can be obtained via tooltips that pop up when hovering over the respective parameters.
Section 1: Measurement Data
Enter the information (background area and net peak area) for the characteristic gamma line you want to evaluate as well as the measurement time (Live Time)
Section 2: Measurement Parameters
Enter all further parameters of the measurement here.
Section 3: Correction Factors
The evaluation model for the activity calculation of a measurement in open geometry according to Filß uses two correction factors. You can determine these with the corresponding tools (K1, K2) or estimate their uncertainties by varying the parameters there.
Section 4: Quantiles
Here you can specify the probabilities to be used for determining the detection, limit of detection, and confidence limits.
Section 5: Results
The calculated values for the characteristic gamma line are displayed here.
Section 6: Reference Value
By specifying a reference value (yr > 0 Bq), it can be checked whether the activity indicated by the reference value can be determined with the specified parameters.
Section 7: Summary
A textual evaluation based on your inputs will be provided here.
