CALIBRATION AND USE OF GERMANIUM SPECTROMETERS FOR THE MEASUREMENT OF GAMMA-RAY EMISSION RATES OF RADIONUCLIDES
Institute of Electrical & Electronics Engineers
1 Overview
1.1 Scope
1.2 Purpose
2 References
3 Definitions
4 Installation of instrumentation
5 Calibration procedures
5.1 Energy calibration
5.2 Efficiency calibration
6 Gamma-ray measurements with Ge spectrometers
6.1 Peak-finding algorithm
6.2 Peak position and area measurement
6.3 Measurement of gamma-ray energies
6.4 Subtraction of background peaks
6.5 Measurement of gamma-ray emission rates
6.6 Calculation of nuclide activities
7 Performance tests of the spectrometry system
7.1 MCA clocks
7.2 DC offset and pole-zero settings
7.3 Energy calibration
7.4 System efficiency
7.5 System resolution
8 Verification of the analysis process
8.1 Test of automatic peak-finding algorithm
8.2 Test of independence of peak-area from the
gross peak-height-to-baseline-height ratio
8.3 Test of the double-peak finding and fitting
algorithms
8.4 Pulse pileup (random summing)
8.5 Assessment of the magnitude of coincidence
summing
8.6 Bias in the relative full-energy peak efficiency
8.7 Accuracy of the full-energy peak efficiency
8.8 Radionuclide identification
8.9 Identification through multipeak analysis and
correction for interference from other
radionuclides
9 Uncertainties and propagation of uncertainty
Annex A (informative) Bibliography
Annex B (informative) Procedures for characterization
of a Ge gamma-ray spectrometer
Annex C (informative) Measurement of peak position,
net area, and their uncertainties
Annex D (informative) Equations for the correction of
coincidence gamma-ray summing
Annex E (informative) Construction of shields for Ge
spectrometers
Outlines procedures for the calibration and use of germanium (Ge) spectrometers used in the measurement of gamma-ray energies and emission rates over the energy range from 59 keV to approximately 3000 keV, and the calculation of source activities from these measurements. Defines the minimum requirements for automated peak finding and methods for measuring the full-energy peak efficiency with calibrated sources.
| Document Type | Standard |
| Status | Current |
| Publisher | Institute of Electrical & Electronics Engineers |
| Committee | IEEE |
