NF ISO 11929-8

NF ISO 11929-8

November 2005
Standard Cancelled

Determination of the detection limit and decision threshold for ionizing radiation measurements - Part 8 : fundamentals and application to unfolding of spectrometric measurements without the influence of sample treatment

ISO 11929-8:2005 specifies a method for determination of suitable statistical values which allow an assessment of the detection capabilities in spectrometric nuclear radiation measurements, and of the physical effect quantified by a measurand (for example, a net area of a spectrometric line in an alpha- or gamma-spectrum) which is determined by evaluation of a multi-channel spectrum by unfolding methods, without the influence of sample treatment. For this purpose, Bayesian statistical methods are used to specify characteristic limits.

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National standards and national normative documents

Publication date

November 2005

Number of pages

29 p.

Reference

NF ISO 11929-8

ICS Codes

17.240   Radiation measurements

Classification index

M60-200-8

Print number

1 - 20/01/2010

International kinship

ISO 11929-8:2005
Sumary
Determination of the detection limit and decision threshold for ionizing radiation measurements - Part 8 : fundamentals and application to unfolding of spectrometric measurements without the influence of sample treatment

ISO 11929-8:2005 specifies a method for determination of suitable statistical values which allow an assessment of the detection capabilities in spectrometric nuclear radiation measurements, and of the physical effect quantified by a measurand (for example, a net area of a spectrometric line in an alpha- or gamma-spectrum) which is determined by evaluation of a multi-channel spectrum by unfolding methods, without the influence of sample treatment. For this purpose, Bayesian statistical methods are used to specify characteristic limits.

Standard replaced by (1)
NF ISO 11929
May 2010
Standard Cancelled
Determination of the characteristic limits (decision threshold, detection limit and limits of the confidence interval) for measurements of ionizing radiation - Fundamentals and application

ISO 11929:2010 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.

Table of contents
  • Avant-propos
    iv
  • Introduction
    v
  • 1 Domaine d'application
    1
  • 2 Références normatives
    1
  • 3 Termes et définitions
    1
  • 4 Quantités et symboles
    3
  • 5 Valeurs statistiques et intervalle de confiance
    5
  • 5.1 Principes
    5
  • 5.2 Seuil de décision
    7
  • 5.3 Limite de détection
    8
  • 5.4 Limites de confiance
    8
  • 6 Application de la présente partie de l'ISO 11929
    9
  • 6.1 Valeurs spécifiques
    9
  • 6.2 Évaluation d'une méthode de mesure
    9
  • 6.3 Évaluation des résultats de mesure
    9
  • 6.4 Documentation
    9
  • 7 Valeurs de la fonction de distribution de la distribution normale standard
    10
  • Annexe A (informative) Exemple d'application de la présente partie de l'ISO 11929
    12
  • Bibliographie
    21
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