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Study of certain random variations in the measurement of low level radioactivities by means of electric circuits (1963); Etude, au moyen de circuits electroniques, de certaines fluctuations aleatoires dans les mesures de radioactivite a bas niveau (1963)

Abstract

The aim of this work is to find a control method which ensures that there is really a statistical distribution of pulses during the measurement of very low activities. The use of a method based on the distribution of time intervals is examined first, as well as the graphical representation to which it leads. The second method is a study of the distribution of the number of pulses in a given time interval. It makes it possible to use two tests for verifying Gauss's law: Henry's graphical test and the {chi}{sup 2} mathematical test. The electronic devices necessary for these tests have been built; they have made it possible to study the fluctuations in on installation for measuring the natural activity of carbon. (author) [French] Le but de ce travail est de rechercher des methodes de controle qui permettent de s'assurer qu'au cours de mesures de tres faibles activites, on a bien une distribution statistique des impulsions. L'utilisation d'une premiere methode basee sur la distribution des intervalles de temps est d'abord examinee, ainsi que la representation graphique a laquelle elle conduit. La deuxieme methode est une etude de la repartition du nombre d'impulsions pendant un temps determine. Elle permet l'utilisation  More>>
Authors:
Moghimi, D [1] 
  1. Commissariat a l'Energie Atomique, Saclay (France). Centre d'Etudes Nucleaires
Publication Date:
Mar 15, 1963
Product Type:
Thesis/Dissertation
Report Number:
CEA-R-2299
Resource Relation:
Other Information: TH: These sciences; 14 refs
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; CARBON 14; DATA ANALYSIS; DISTRIBUTION; DISTURBANCES; ELECTRONIC CIRCUITS; FLUCTUATIONS; GAUSS FUNCTION; LEAST SQUARE FIT; NATURAL RADIOACTIVITY; STATISTICS
OSTI ID:
20808553
Research Organizations:
CEA Saclay, 91 - Gif-sur-Yvette (France); Faculte des Sciences de l'Universite de Paris, Centre d'Orsay, 91 (France)
Country of Origin:
France
Language:
French
Other Identifying Numbers:
TRN: FR06R2299110058
Availability:
Available from INIS in electronic form
Submitting Site:
FRN
Size:
63 pages
Announcement Date:
Dec 23, 2006

Citation Formats

Moghimi, D. Study of certain random variations in the measurement of low level radioactivities by means of electric circuits (1963); Etude, au moyen de circuits electroniques, de certaines fluctuations aleatoires dans les mesures de radioactivite a bas niveau (1963). France: N. p., 1963. Web.
Moghimi, D. Study of certain random variations in the measurement of low level radioactivities by means of electric circuits (1963); Etude, au moyen de circuits electroniques, de certaines fluctuations aleatoires dans les mesures de radioactivite a bas niveau (1963). France.
Moghimi, D. 1963. "Study of certain random variations in the measurement of low level radioactivities by means of electric circuits (1963); Etude, au moyen de circuits electroniques, de certaines fluctuations aleatoires dans les mesures de radioactivite a bas niveau (1963)." France.
@misc{etde_20808553,
title = {Study of certain random variations in the measurement of low level radioactivities by means of electric circuits (1963); Etude, au moyen de circuits electroniques, de certaines fluctuations aleatoires dans les mesures de radioactivite a bas niveau (1963)}
author = {Moghimi, D}
abstractNote = {The aim of this work is to find a control method which ensures that there is really a statistical distribution of pulses during the measurement of very low activities. The use of a method based on the distribution of time intervals is examined first, as well as the graphical representation to which it leads. The second method is a study of the distribution of the number of pulses in a given time interval. It makes it possible to use two tests for verifying Gauss's law: Henry's graphical test and the {chi}{sup 2} mathematical test. The electronic devices necessary for these tests have been built; they have made it possible to study the fluctuations in on installation for measuring the natural activity of carbon. (author) [French] Le but de ce travail est de rechercher des methodes de controle qui permettent de s'assurer qu'au cours de mesures de tres faibles activites, on a bien une distribution statistique des impulsions. L'utilisation d'une premiere methode basee sur la distribution des intervalles de temps est d'abord examinee, ainsi que la representation graphique a laquelle elle conduit. La deuxieme methode est une etude de la repartition du nombre d'impulsions pendant un temps determine. Elle permet l'utilisation de 2 tests de verification de la loi de Gauss: le test graphique de Henry et le test mathematique de {chi}{sup 2}. Les dispositifs electroniques necessaires pour l'utilisation de ces tests ont ete realises.; ils ont ensuite permis l'etude des fluctuations dans une installation de mesure d'activite naturelle du carbone. (auteur)}
place = {France}
year = {1963}
month = {Mar}
}