DIFFUSION THEORY OF FINITE HETEROGENEOUS REACTOR LAYOUTS

Journal Article · Mon Dec 01 04:00:00 EST 1958 · Nukleonika (Poland)

OSTI ID:4274542

Sturm, B

The eigenvalue and the eigenfunction of a twodimensional rectsrgular layout of fuel elements in a finite moderating medium were calculated, in which, in contrast to previously suggested methods, the resonance absorption was considered by the addition of suitable depressions to the source term of thermal neutrons. The consideration of the resonance absorption is of significance for the calculation of the eigenvalue of a perturbed lattice structure since in this case not only the thermal source, but also the resonance transition probability of the layout is altered. The correct reactivity change can be found only with incorporation of the resonance absorption. It was also shown that by a suitable generalization the experimentally determined source density distributlon could be used for the calculation of the eigenvalues and eigenfunctions. (tr-auth)

• Research Organization: Siemens-Schuckertwerke AG, Erlangen, Ger.
• NSA Number: NSA-13-008260
• OSTI ID: 4274542
• Journal Information: Nukleonika (Poland), Journal Name: Nukleonika (Poland) Vol. Vol: 1; ISSN NUKLA
• Country of Publication: Country unknown/Code not available
• Language: German

Related Subjects

ABSORPTION
BUCKLING
CONFIGURATION
CRITICALITY
EIGENFUNCTIONS
EIGENVALUES
EQUATIONS
FUEL ELEMENTS
MATHEMATICS
MEASURED VALUES
MODERATORS
MULTIPLICATION FACTORS
NEUTRON FLUX
NEUTRON SOURCES
PLATES
REACTIVITY
REACTOR CORE
REACTORS
RESONANCE ESCAPE PROBABILITY
SLOWDOWN
THERMAL NEUTRONS
TRANSPORT THEORY
VARIATIONS
ZONES