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A perturbation effect in the reflector of a reactor. The case of a radial channel; Effet d'une perturbation dans le reflecteur d'une pile. Cas d'un canal radial

Abstract

The absorption and the transport effect in a channel within the reflector of a reactor has been already studied with the first group theory, this study will discuss its resolution with the second group theory which describes the neutron distribution within a reactor by the value of two functions representing respectively the flux of fast neutrons and thermal neutrons, S{sub f} and S{sub s}. The study of the reactivity variation caused by a disturbance in the critical conditions and its application to the effect of a radial channel located within the reflector of a reactor leads to the evaluation of the reactivity drop caused by the presence of radial channels in the fully charged EL3 reactor. Numerical results are given for the contribution of the fast neutron and thermal neutron flux to the reactivity drop as well as the expression of the reactivity drop caused by the neutrons transport effect. (M.P.)
Authors:
Lerouge, B; Raievski, V [1] 
  1. Commissariat a l'Energie Atomique, Saclay (France). Centre d'Etudes Nucleaires
Publication Date:
Jul 01, 1957
Product Type:
Technical Report
Report Number:
CEA-R-668
Resource Relation:
Other Information: 7 refs
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; BOUNDARY CONDITIONS; CRITICALITY; CYLINDRICAL CONFIGURATION; DISTURBANCES; EL-3 REACTOR; FAST NEUTRONS; ISOTROPY; MULTIGROUP THEORY; NEUTRON FLUX; NEUTRON REFLECTORS; NEUTRON TRANSPORT; REACTIVITY; THERMAL NEUTRONS
OSTI ID:
20868376
Research Organizations:
CEA Saclay, 91 - Gif-sur-Yvette (France)
Country of Origin:
France
Language:
French
Other Identifying Numbers:
TRN: FR07R0668036129
Availability:
Available from INIS in electronic form
Submitting Site:
FRN
Size:
20 pages
Announcement Date:
May 24, 2007

Citation Formats

Lerouge, B, and Raievski, V. A perturbation effect in the reflector of a reactor. The case of a radial channel; Effet d'une perturbation dans le reflecteur d'une pile. Cas d'un canal radial. France: N. p., 1957. Web.
Lerouge, B, & Raievski, V. A perturbation effect in the reflector of a reactor. The case of a radial channel; Effet d'une perturbation dans le reflecteur d'une pile. Cas d'un canal radial. France.
Lerouge, B, and Raievski, V. 1957. "A perturbation effect in the reflector of a reactor. The case of a radial channel; Effet d'une perturbation dans le reflecteur d'une pile. Cas d'un canal radial." France.
@misc{etde_20868376,
title = {A perturbation effect in the reflector of a reactor. The case of a radial channel; Effet d'une perturbation dans le reflecteur d'une pile. Cas d'un canal radial}
author = {Lerouge, B, and Raievski, V}
abstractNote = {The absorption and the transport effect in a channel within the reflector of a reactor has been already studied with the first group theory, this study will discuss its resolution with the second group theory which describes the neutron distribution within a reactor by the value of two functions representing respectively the flux of fast neutrons and thermal neutrons, S{sub f} and S{sub s}. The study of the reactivity variation caused by a disturbance in the critical conditions and its application to the effect of a radial channel located within the reflector of a reactor leads to the evaluation of the reactivity drop caused by the presence of radial channels in the fully charged EL3 reactor. Numerical results are given for the contribution of the fast neutron and thermal neutron flux to the reactivity drop as well as the expression of the reactivity drop caused by the neutrons transport effect. (M.P.)}
place = {France}
year = {1957}
month = {Jul}
}