Traceability in gamma-ray spectrometry.
The new edition of the International vocabulary of metrology-basic and general concepts and associated terms (VIM) defines metrological traceability in a different way than was defined in the previous edition. The reference to an "unbroken chain of comparisons" is replaced by a "chain of calibrations." Calibrations, unlike comparisons, render possible an interpolation of the quantity values between indicated parameters where the calibration was performed. Calibrations of software may be performed using software-measurement standards as well. Furthermore, the traceability of quantities having a minor influence on the measurement result is not mandatory. As a consequence of these modifications, the traceability of gamma-ray spectrometric results can also be attained when gamma-ray spectrometry is implemented other than as a relative method.
Glavic-Cindro
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Jozef Stefan Institute, Ljubljana, Slovenia.
Korun
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D002138:Calibration; D012984:Software; D013051:Spectrometry, Gamma / Q000592:standards* / Q000706:statistics & numerical data; D014894:Weights and Measures