BS ISO 11929:2010 PDF

Determination of the characteristic limits (decision threshold, detection limit and limits of the confidence interval) for measurements of ionizing radiation. Fundamentals and application

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BS ISO 11929:2010

Determination of the characteristic limits (decision threshold, detection limit and limits of the confidence interval) for measurements of ionizing radiation. Fundamentals and application

Статус документа:: Отменён
Формат:: Электронный (PDF)
Дата публикации:: 31 марта 2010 г.
ICS:: 17.240
SKU:: BS ISO 11929:2010

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Abstract

1 Scope This International Standard specifies a procedure, in the field of ionizing radiation metrology, for the calculation of the “ decision threshold ”, the “ detection limit ” and the “ limits of the confidence interval ” for a non-negative ionizing radiation measurand , when counting measurements with preselection of time or counts are carried out, and the measurand results from a gross count rate and a background count rate as well as from further quantities on the basis of a model of the evaluation. In particular, the measurand can be the net count rate as the difference of the gross count rate and the background count rate, or the net activity of a sample. It can also be influenced by calibration of the measuring system, by sample treatment and by other factors. This International Standard also applies, in the same way to:

— counting measurements on moving objects (see B.2);

— measurements with linear-scale analogue count rate measuring instruments (hereinafter called ratemeters, see B.3);

— repeated counting measurements with random influences (see B.4);

— counting measurements on filters during accumulation of radioactive material (see B.5);

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BS ISO 11929:2010 PDF

Abstract

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