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Determination of tritium by counting; Dosage du tritium par comptage

Abstract

Ionisation chamber assay of tritium in any gaseous mixture is a simple, fast and accurate method. We used the method of relative determination by comparison to a standard rather than the method of absolute assay in which case the constants are known with too little accuracy. The efficiency of the chamber was studied in connection to the pressure inside the chamber and its total volume. The calibration is linear in the range we are taking into account (1 to 80 millicuries). The reproducibility of the method is good: 13 runs gave a coefficient of variation of 1.6 per cent. The relative accuracy was found equal to {+-} 1.3 per cent. To end the paper, we describe in detail the apparatus and the ways of proceedings. (authors) [French] Le comptage du tritium par chambre d'ionisation est une methode simple, rapide et precise pour determiner la teneur en tritium d'un melange gazeux quelconque. Nous avons prefere utiliser la methode de determination relative par rapport a un etalon car, dans le cas d'une determination absolue, les constantes sont connues avec une trop grande incertitude. L'efficacite de la chambre a ete etudiee en fonction de la variation de la pression d'argon a l'interieur de  More>>
Authors:
Schott, R; Froment, G; Pinson, J; Genty, C [1] 
  1. Commissariat a l'Energie Atomique, Bruyeres-le-Chatel (France). Centre d'Etudes
Publication Date:
Jul 01, 1968
Product Type:
Technical Report
Report Number:
CEA-R-3348
Resource Relation:
Other Information: 18 refs
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ARGON; CALIBRATION; IONIZATION CHAMBERS; PRESSURE DEPENDENCE; QUANTITATIVE CHEMICAL ANALYSIS; RELIABILITY; TRITIUM
OSTI ID:
20726984
Research Organizations:
CEA Bruyeres-le-Chatel, 91 (France)
Country of Origin:
France
Language:
French
Other Identifying Numbers:
TRN: FR06R3348038429
Availability:
Available from INIS in electronic form
Submitting Site:
FRN
Size:
[34] pages
Announcement Date:
May 24, 2006

Citation Formats

Schott, R, Froment, G, Pinson, J, and Genty, C. Determination of tritium by counting; Dosage du tritium par comptage. France: N. p., 1968. Web.
Schott, R, Froment, G, Pinson, J, & Genty, C. Determination of tritium by counting; Dosage du tritium par comptage. France.
Schott, R, Froment, G, Pinson, J, and Genty, C. 1968. "Determination of tritium by counting; Dosage du tritium par comptage." France.
@misc{etde_20726984,
title = {Determination of tritium by counting; Dosage du tritium par comptage}
author = {Schott, R, Froment, G, Pinson, J, and Genty, C}
abstractNote = {Ionisation chamber assay of tritium in any gaseous mixture is a simple, fast and accurate method. We used the method of relative determination by comparison to a standard rather than the method of absolute assay in which case the constants are known with too little accuracy. The efficiency of the chamber was studied in connection to the pressure inside the chamber and its total volume. The calibration is linear in the range we are taking into account (1 to 80 millicuries). The reproducibility of the method is good: 13 runs gave a coefficient of variation of 1.6 per cent. The relative accuracy was found equal to {+-} 1.3 per cent. To end the paper, we describe in detail the apparatus and the ways of proceedings. (authors) [French] Le comptage du tritium par chambre d'ionisation est une methode simple, rapide et precise pour determiner la teneur en tritium d'un melange gazeux quelconque. Nous avons prefere utiliser la methode de determination relative par rapport a un etalon car, dans le cas d'une determination absolue, les constantes sont connues avec une trop grande incertitude. L'efficacite de la chambre a ete etudiee en fonction de la variation de la pression d'argon a l'interieur de la chambre et du volume total, de cette derniere. L'etalonnage s'est revele lineaire dans le domaine de mesures qui nous interessaient (1 a 80 millicuries). La reproductibillte de la methode est tres bonne, le coefficient de variation pour une serie de 13 essais etant de 1,6 pour cent, quant a la precision relative, elle a ete evaluee a {+-} 1,3 pour cent. Pour terminer, nous donnons une description detaillee de l'appareillage utilise et du mode operatoire suivi. (auteurs)}
place = {France}
year = {1968}
month = {Jul}
}