Published June 1990 | Version v1
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Calculation of the critical buckling of a lattice based on the integral form of the transport equation

Creators

Description

The migration area, which relates the buckling to the multiplication factor, can be calculated by means of the Deniz formula. This formula involves the direct and adjoint angular fluxes. It is shown in this note that it is possible, using the integral form of the transport equation, to establish an equivalent formula in which only angle-integrated quantities appear. This formulation is more suitable for the calculation by the collision probably method. (author)

Abstract (French)

L'aire de migration d'un reseau, qui relie le laplacien au facteur de multiplication, peut etre calculee au moyen de la formule de Deniz. Cette formule fait intervenir les flux angulaires direct et adjoint. On montre qu'il est possible d'etablir, en partant de la forme integrale de l'equation de transport, une formule equivalente, dans laquelle n'apparaissent que des quantites integrees sur les directions. Cette formulation est plus adaptee au calcul par la methode des probabilites de collision. (auteur)

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Additional details

Additional titles

Original title (French)
Calcul du laplacien critique d'un reseau a partir de la forme integrale de l'equation de transport

Publishing Information

Imprint Pagination
16 p.
Report number
CEA-N--2647

INIS

Country of Publication
France
Country of Input or Organization
France
INIS RN
55006120
Subject category
S22: GENERAL STUDIES OF NUCLEAR REACTORS;
Descriptors DEI
ADJOINT FLUX; BUCKLING; COLLISION INTEGRALS; MIGRATION LENGTH; MULTIPLICATION FACTORS; NEUTRON TRANSPORT
Descriptors DEC
DIMENSIONLESS NUMBERS; DIMENSIONS; INTEGRALS; LENGTH; NEUTRAL-PARTICLE TRANSPORT; NEUTRON FLUX; RADIATION FLUX; RADIATION TRANSPORT

Optional Information

Notes
Available from the INIS Liaison Officer for France, see the INIS website for current contact and E-mail addresses; This record replaces 22031957