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HOT NEUTRON EFFECT [1 record]

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Record 1 - external organization data 2005-08-25

English

Subject field(s)
  • Atomic Physics
  • Compartment - Canadian Nuclear Safety Commission
CONT

A non-technical summary of this "hot neutron effect" may help you remember it. U-235 prefers cold neutrons; Pu-239 strongly prefers hot neutrons. Thus, for fresh fuel, increasing thermal neutron temperature decreases reactivity. For equilibrium fuel, reactivity increases with increasing thermal neutron temperature.

French

Domaine(s)
  • Physique atomique
  • Tiroir - Commission canadienne de sûreté nucléaire
CONT

Un résumé non technique de ce «phénomène des neutrons chauds» peut vous aider à mémoriser ce phénomène. L'uranium 235 préfère les neutrons froids; le plutonium 239 a une préférence marquée pour les neutrons chauds. Ainsi, pour le combustible neuf, l'augmentation de la température des neutrons thermiques diminue la réactivité. Pour le combustible à l'équilibre, la réactivité augmente en fonction de l'augmentation de la température des neutrons thermiques. L'effet d'absorption par résonance est toujours plus important que «l'effet des neutrons chauds».

Spanish

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