TERMIUM Plus®

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FACTEUR MULTIPLICATION NEUTRONS [1 record]

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Record 1 - external organization data 2005-11-10

English

Subject field(s)
  • Calculating Procedures (Mathematics)
  • Atomic Physics
  • Nuclear Fission Reactors
  • Compartment - Canadian Nuclear Safety Commission
CONT

Reactivity mechanisms change the value of the neutron multiplication factor in the reactor core. Most affect the parasitic absorption of thermal neutrons in the core. When a device increases the parasitic absorption in a core it is said to be adding negative reactivity. If a device is decreasing the parasitic absorption it is adding reactivity.

French

Domaine(s)
  • Procédés de calcul (Mathématiques)
  • Physique atomique
  • Réacteurs nucléaires de fission
  • Tiroir - Commission canadienne de sûreté nucléaire
CONT

Les mécanismes de contrôle de la réactivité changent la valeur du facteur de multiplication des neutrons dans le coeur du réacteur. La plupart d'entre eux ont une incidence sur l'absorption parasite des neutrons thermiques dans le coeur. Lorsqu'un dispositif augmente l'absorption parasite dans un coeur, on dit qu'il ajoute de la réactivité négative. On dit des dispositifs qui diminuent l'absorption parasite qu'ils ajoutent de la réactivité.

Spanish

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