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IEEE/ANSI N42.14-1978

Historical Revision

American National Standard for Calibration and Use of Germanium Spectrometers for the Measurement of Gamma-Ray Emission Rates of Radionuclides

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New IEEE Standard - Superseded. 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 for the calculation of source activities from these measurements, are established. Minimum requirements for automated peak finding are stated. Methods for measuring the full energy peak efficiency with calibrated sources are given. Performance tests that ascertain the proper functioning of the Ge spectrometer and evaluate the limitations of the algorithms used for locating and fitting single and multiple peaks are described. Methods for the measurement of, and the correction for pulse pileup are suggested. Techniques are recommended for the inspection of spectral-analysis results for large errors resulting from summing of cascade gamma rays in the detector. Suggestions are provided for the establishment of data libraries for radionuclide identification, decay corrections, and the conversion of gamma-ray rates to decay rates.
This standard establishes methods for calibration and usage of germanium detectors for the measurement of gamma-ray emission rates of radionuclides. It covers the energy and full energy peak efficiency calibration as well as the determination of gamma-ray energies in the 0.06 to 2 MeV energy region and is designed to yield gamma-ray emission rates with an uncertainty of f 3 percent.1 This standard applies primarily to measurements which do not involve overlapping peaks, and in which peak to continuum considerations are not important.
The purpose of this standard is to provide a standardized basis for the calibration and usage of germanium detectors for measurement of gamma-ray emission rates of radionuclides. This standard is intended for use by knowledgeable persons who are responsible for the development of correct procedures for the calibration and usage of germanium detectors.

SDO IEEE: Institute of Electrical and Electronics Engineers
Document Number N42.14
Publication Date Sept. 14, 1978
Language en - English
Page Count 9
Revision Level
Supercedes
Committee
Publish Date Document Id Type View
June 1, 1999 N42.14-1999 Revision
Sept. 14, 1978 N42.14-1978 Revision