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The study of neutron transport by oscillation method; Etude du transport des neutrons par la methode de modulation

Abstract

The oscillation method is of very general use for studying the behavior of thermal neutrons in media. The main experiments are described and a general theory of them is given. This theory, which is presented in the first part, is established using the two-group approximation which has proved its efficiency in the case of thermal neutron piles. The validity of the two-group approximation is recalled. This allows definition of the meaning of the parameters used in the theory and which are measured in these experiments. The experiments carried out by this method are described, especially those performed at the Centre d'Etudes Nucleaires de Saclay where the method has been extensively used. These experiments are interpreted by means of the general theory given previously. In this way, the identity of parameters measured by this method and those given by the theory is proved. This is particularly conclusive is the case of the mean life of neutrons in a pile. (author) [French] La methode de modulation est un procede tres general d'etude des proprietes neutroniques des milieux contenant des neutrons thermiques. Le present rapport a pour but de decrire les principales de ces experiences et d'en donner une theorie generale. Cette theorie,  More>>
Authors:
Publication Date:
Jul 01, 1959
Product Type:
Technical Report
Report Number:
CEA-1095
Resource Relation:
Other Information: 50 refs; PBD: 1959
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; IMPURITIES; LIFETIME; MEAN FREE PATH; MODULATION; NEUTRON DETECTORS; NEUTRON TRANSPORT; NUCLEAR PHYSICS; REACTIVITY; TEMPERATURE DEPENDENCE; VARIATIONS
OSTI ID:
20468444
Research Organizations:
Commissariat a l'Energie Atomique, Centre d'Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France)
Country of Origin:
France
Language:
French
Other Identifying Numbers:
TRN: FR04A1095044154
Availability:
Available from INIS in electronic form
Submitting Site:
FRN
Size:
[102] pages
Announcement Date:
Jun 18, 2004

Citation Formats

Raievski, V. The study of neutron transport by oscillation method; Etude du transport des neutrons par la methode de modulation. France: N. p., 1959. Web.
Raievski, V. The study of neutron transport by oscillation method; Etude du transport des neutrons par la methode de modulation. France.
Raievski, V. 1959. "The study of neutron transport by oscillation method; Etude du transport des neutrons par la methode de modulation." France.
@misc{etde_20468444,
title = {The study of neutron transport by oscillation method; Etude du transport des neutrons par la methode de modulation}
author = {Raievski, V}
abstractNote = {The oscillation method is of very general use for studying the behavior of thermal neutrons in media. The main experiments are described and a general theory of them is given. This theory, which is presented in the first part, is established using the two-group approximation which has proved its efficiency in the case of thermal neutron piles. The validity of the two-group approximation is recalled. This allows definition of the meaning of the parameters used in the theory and which are measured in these experiments. The experiments carried out by this method are described, especially those performed at the Centre d'Etudes Nucleaires de Saclay where the method has been extensively used. These experiments are interpreted by means of the general theory given previously. In this way, the identity of parameters measured by this method and those given by the theory is proved. This is particularly conclusive is the case of the mean life of neutrons in a pile. (author) [French] La methode de modulation est un procede tres general d'etude des proprietes neutroniques des milieux contenant des neutrons thermiques. Le present rapport a pour but de decrire les principales de ces experiences et d'en donner une theorie generale. Cette theorie, exposee dans la premiere partie, est etablie dons le cadre de l'approximation a deux groupes de vitesse qui a prouve son efficacite dons le cas des piles a neutrons thermiques. Le domaine de validite de l'approximation a deux groupes est rappele au debut, ce qui permet de definir avec precision la signification des parametres qui entrent dons la theorie et qui font l'objet de ces mesures. La deuxieme partie decrit les experiences realisees, en particulier celles effectuees au Centre d'Etudes Nucleaires de Saclay ou la methode a ete considerablement developpee. Ces experiences sont interpretees dans le cadre de la theorie generale exposee precedemment. On prouve ainsi l'identite des parametres mesures par cette methode et de ceux figurant dons la theorie. La vie moyenne des neutrons dans une pile en est un exemple significatif. (auteur)}
place = {France}
year = {1959}
month = {Jul}
}