Published April 1975 | Version v1
Report Metadata-only

Thermodiffusion in nuclear fuel oxides

Creators

  • 1. Kernforschungszentrum Karlsruhe (F.R. Germany). Inst. fuer Neutronenphysik und Reaktortechnik

Description

The significance of thermodiffusion in the changing of fuel during irradiation in the reactor is discussed. The high temperatures, to which the fuel in the centre of an oxide fuel rod is subjected to and the steep radial temperature gradient, which arises through the heat transport to the fuel rod cladding, allow thermodiffusion processes to become effective whereby a considerable displacement of the oxygen, fission products and even actinides is possible. A report is given on the present state of investigation of such processes. (orig./LH)

Abstract (German)

Die Bedeutung der Thermodiffusion fuer die Veraenderung des Brennstoffes waehrend der Bestrahlung im Reaktor wird diskutiert. Die hohen Temperaturen, denen der Brennstoff im Inneren eines oxidischen Brennstabes ausgesetzt ist und der steile radiale Temperaturgradient, der durch den Waermetransport der Brennstabhuelle entsteht, lassen Thermodiffusionsprozesse wirksam werden, wodurch eine wesentliche Verlagerung des Sauerstoffs, der Spaltprodukte und sogar der Aktiniden moeglich wird. Ueber den aktuellen Stand der Untersuchung solcher Prozesse wird berichtet. (orig./RW)

Additional details

Additional titles

Original title (German)
Thermodiffusion in oxidischen Kernbrennstoffen

Publishing Information

Imprint Title
Contributions to nuclear engineering
Imprint Pagination
p. 149-191.
Report number
KFK--2200

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
6206333
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
FISSION PRODUCTS; FUEL ELEMENTS; HEAT TRANSFER; IRRADIATION; MASS TRANSFER; OXYGEN; PHYSICAL RADIATION EFFECTS; PLUTONIUM OXIDES; THERMAL DIFFUSION; URANIUM OXIDES
Descriptors DEC
ACTINIDE COMPOUNDS; CHALCOGENIDES; ELEMENTS; ENERGY TRANSFER; ISOTOPES; NONMETALS; OXIDES; OXYGEN COMPOUNDS; PLUTONIUM COMPOUNDS; RADIATION EFFECTS; RADIOACTIVE MATERIALS; REACTOR COMPONENTS; TRANSURANIUM COMPOUNDS; URANIUM COMPOUNDS

Optional Information

Notes
9 figs.; 36 refs. Imprint:Beitraege zur Kerntechnik.;Karl Wirtz gewidmet zum 65. Geburtstag.
Secondary number(s)
Juel--1178.