IEC 61452 : 1.0

Table of Contents

FOREWORD<br>INTRODUCTION<br>Clause<br>1 Scope and object<br>2 Normative references<br>3 Definitions and symbols<br>&nbsp;&nbsp;&nbsp;3.1 Special word usage<br>&nbsp;&nbsp;&nbsp;3.2 Definitions<br>&nbsp;&nbsp;&nbsp;3.3 Symbols<br>4 Installation of instrumentation<br>5 Peak analysis and calibration procedures<br>&nbsp;&nbsp;&nbsp;5.1 Peak-finding algorithm<br>&nbsp;&nbsp;&nbsp;5.2 Peak position and area measurement<br>&nbsp;&nbsp;&nbsp;5.3 Energy calibration<br>&nbsp;&nbsp;&nbsp;5.4 Efficiency calibration measurement<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.4.1 Standardization for specific radionuclides<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.4.2 Detector efficiency as a function of <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;energy<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.4.3 Efficiency function or look-up table<br>6 Gamma-ray measurements with Ge spectrometers<br>&nbsp;&nbsp;&nbsp;6.1 Measurement of gamma-ray energies<br>&nbsp;&nbsp;&nbsp;6.2 Measurement of gamma-ray emission rates and <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;radionuclides activities<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.2.1 Subtraction of interference peaks in the<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;background<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.2.2 Radioactive decay<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.2.3 Pulse pile-up (random summing)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.2.4 Cascade (coincidence summing)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.2.5 Attenuation corrections<br>7 Performance tests of the spectrometry system<br>&nbsp;&nbsp;&nbsp;7.1 Multichannel-analyzer clocks<br>&nbsp;&nbsp;&nbsp;7.2 D.C. offset and pole-zero settings<br>&nbsp;&nbsp;&nbsp;7.3 Energy calibration<br>&nbsp;&nbsp;&nbsp;7.4 System efficiency and resolution<br>&nbsp;&nbsp;&nbsp;7.5 Pulse pile-up (random summing)<br>8 Performance tests of the analysis software<br>&nbsp;&nbsp;&nbsp;8.1 Test of automatic peak-finding algorithm<br>&nbsp;&nbsp;&nbsp;8.2 Test of independence of peak-area from the gross<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;peak-height to continuum-height ratio<br>&nbsp;&nbsp;&nbsp;8.3 Test of the doublet-peak finding and fitting <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;algorithms<br>9 Verification of the entire analysis process<br>&nbsp;&nbsp;&nbsp;9.1 Assessment of the magnitude of cascade summing<br>&nbsp;&nbsp;&nbsp;9.2 Absolute error in the relative full-energy-peak<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;efficiency<br>&nbsp;&nbsp;&nbsp;9.3 Accuracy of the full-energy-peak efficiency<br>10 Radionuclide identification<br>11 Uncertainties and uncertainty propagation<br>Annexes<br>A Procedures for characterization of a Ge gamma-ray <br>&nbsp;&nbsp;&nbsp;spectrometer<br>B Measurement of peak position, net area and their<br>&nbsp;&nbsp;&nbsp;uncertainties<br>C Equations for the correction of cascade gamma-ray <br>&nbsp;&nbsp;&nbsp;summing<br>D Construction of shields for Ge spectrometers<br>E Bibliography<br>Tables<br>Figures

Abstract

Establishes methods for the calibration and use of germanium spectrometers for the measurement of gamma-ray energies and emission rates over the energy range from 59 keV to approximately 3000 keV and the calculation of sources activities.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	International Electrotechnical Committee
Pages
ISBN
Committee	TC 45