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NEUTRON MULTIPLICATION [6 records]
Record 1 - internal organization data 2015-04-28
Record 1, English
Record 1, Subject field(s)
- Nuclear Physics
Record 1, Main entry term, English
- neutron multiplication
1, record 1, English, neutron%20multiplication
correct, standardized
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
The production by a neutron of other neutrons in a medium containing fissionable material. 1, record 1, English, - neutron%20multiplication
Record number: 1, Textual support number: 1 OBS
neutron multiplication : term and definition standardized by ISO. 2, record 1, English, - neutron%20multiplication
Record 1, French
Record 1, Domaine(s)
- Physique nucléaire
Record 1, Main entry term, French
- multiplication des neutrons
1, record 1, French, multiplication%20des%20neutrons
correct, feminine noun, standardized
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Production par un neutron d'autres neutrons dans un milieu contenant une substance fissile. 1, record 1, French, - multiplication%20des%20neutrons
Record number: 1, Textual support number: 1 OBS
multiplication des neutrons : terme et définition normalisés par l'ISO. 2, record 1, French, - multiplication%20des%20neutrons
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 2010-03-01
Record 2, English
Record 2, Subject field(s)
- Analytical Chemistry
- Nuclear Physics
Record 2, Main entry term, English
- neutron coincidence counting
1, record 2, English, neutron%20coincidence%20counting
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
- coincidence counting 2, record 2, English, coincidence%20counting
correct
Record 2, Textual support, English
Record number: 2, Textual support number: 1 CONT
Neutron coincidence counting. There is an important difference between the distribution in time of neutrons from an([alpha], n) source and from a spontaneous fission source. The neutrons from an([alpha], n) source are emitted at random times, unrelated to each other, whereas neutrons from spontaneous fission sources are emitted in small, time correlated groups. The size of these groups is determined by the neutron leakage multiplication. The technique of neutron coincidence counting can detect the existence, or absence, of these groups and thus establish the presence, or absence, of a spontaneous fission source. 1, record 2, English, - neutron%20coincidence%20counting
Record 2, French
Record 2, Domaine(s)
- Chimie analytique
- Physique nucléaire
Record 2, Main entry term, French
- comptage neutronique en coïncidence
1, record 2, French, comptage%20neutronique%20en%20co%C3%AFncidence
correct, masculine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
- comptage des coïncidences neutroniques 1, record 2, French, comptage%20des%20co%C3%AFncidences%20neutroniques
correct, masculine noun
Record 2, Textual support, French
Record number: 2, Textual support number: 1 CONT
Le comptage neutronique en coïncidence est la méthode non destructive de référence dans le cadre du contrôle des matières nucléaires, pour ce qui concerne la mesure de masse de plutonium dans les échantillons. De nos jours, la plupart des systèmes de comptage neutronique en coïncidence sont basés sur une technologie de type analogique-logique. Le signal analogique provenant des tubes à He-3 est traité par des amplificateurs qui produisent un train d'impulsions logiques TTL [transistor-transistor logic] qui alimente un analyseur d'impulsions et permet une analyse des corrélations temporelles. 1, record 2, French, - comptage%20neutronique%20en%20co%C3%AFncidence
Record 2, Spanish
Record 2, Textual support, Spanish
Record 3 - internal organization data 2009-10-07
Record 3, English
Record 3, Subject field(s)
- Nuclear Plant Safety
Record 3, Main entry term, English
- rod drop
1, record 3, English, rod%20drop
correct
Record 3, Abbreviations, English
Record 3, Synonyms, English
- rod-drop 2, record 3, English, rod%2Ddrop
correct
Record 3, Textual support, English
Record number: 3, Textual support number: 1 CONT
Pulsed neutron measurements for neutron lifetime and system multiplication and, through delayed neutron fraction and neutron lifetime, source jerk, rod drop, noise analysis, etc. 1, record 3, English, - rod%20drop
Record 3, French
Record 3, Domaine(s)
- Sûreté des centrales nucléaires
Record 3, Main entry term, French
- chute de barre
1, record 3, French, chute%20de%20barre
correct, feminine noun
Record 3, Abbreviations, French
Record 3, Synonyms, French
Record 3, Textual support, French
Record 3, Spanish
Record 3, Textual support, Spanish
Record 4 - external organization data 2005-11-10
Record 4, English
Record 4, Subject field(s)
- Calculating Procedures (Mathematics)
- Atomic Physics
- Nuclear Fission Reactors
- Compartment - Canadian Nuclear Safety Commission
Record 4, Main entry term, English
- neutron multiplication factor 1, record 4, English, neutron%20multiplication%20factor
Record 4, Abbreviations, English
Record 4, Synonyms, English
Record 4, Textual support, English
Record number: 4, Textual support number: 1 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. 1, record 4, English, - neutron%20multiplication%20factor
Record 4, French
Record 4, Domaine(s)
- Procédés de calcul (Mathématiques)
- Physique atomique
- Réacteurs nucléaires de fission
- Tiroir - Commission canadienne de sûreté nucléaire
Record 4, Main entry term, French
- facteur de multiplication des neutrons
1, record 4, French, facteur%20de%20multiplication%20des%20neutrons
masculine noun
Record 4, Abbreviations, French
Record 4, Synonyms, French
Record 4, Textual support, French
Record number: 4, Textual support number: 1 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. 1, record 4, French, - facteur%20de%20multiplication%20des%20neutrons
Record 4, Spanish
Record 4, Textual support, Spanish
Record 5 - external organization data 2005-08-25
Record 5, English
Record 5, Subject field(s)
- Nuclear Fission Reactors
- Compartment - Canadian Nuclear Safety Commission
Record 5, Main entry term, English
- reactivity mechanism 1, record 5, English, reactivity%20mechanism
Record 5, Abbreviations, English
Record 5, Synonyms, English
Record 5, Textual support, English
Record number: 5, Textual support number: 1 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. 1, record 5, English, - reactivity%20mechanism
Record 5, French
Record 5, Domaine(s)
- Réacteurs nucléaires de fission
- Tiroir - Commission canadienne de sûreté nucléaire
Record 5, Main entry term, French
- mécanisme de contrôle de la réactivité
1, record 5, French, m%C3%A9canisme%20de%20contr%C3%B4le%20de%20la%20r%C3%A9activit%C3%A9
masculine noun
Record 5, Abbreviations, French
Record 5, Synonyms, French
Record 5, Textual support, French
Record number: 5, Textual support number: 1 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. 1, record 5, French, - m%C3%A9canisme%20de%20contr%C3%B4le%20de%20la%20r%C3%A9activit%C3%A9
Record 5, Spanish
Record 5, Textual support, Spanish
Record 6 - internal organization data 1980-03-27
Record 6, English
Record 6, Subject field(s)
- Nuclear Power Stations
- Atomic Physics
Record 6, Main entry term, English
- poison out
1, record 6, English, poison%20out
correct, noun
Record 6, Abbreviations, English
Record 6, Synonyms, English
Record 6, Textual support, English
Record number: 6, Textual support number: 1 DEF
The period after reactor shutdown during which Xenon-135 concentration builds up to a peak. Since Xenon-135 has a large neutron absorption cross-section, the multiplication factor(k) is drastically affected. 1, record 6, English, - poison%20out
Record 6, French
Record 6, Domaine(s)
- Centrales nucléaires
- Physique atomique
Record 6, Main entry term, French
- empoisonnement du réacteur 1, record 6, French, empoisonnement%20du%20r%C3%A9acteur
Record 6, Abbreviations, French
Record 6, Synonyms, French
Record 6, Textual support, French
Record number: 6, Textual support number: 1 DEF
(...) Période suivant l'arrêt du réacteur pendant laquelle la concentration en xénon-135 augmente jusqu'à une valeur de pointe. 1, record 6, French, - empoisonnement%20du%20r%C3%A9acteur
Record 6, Spanish
Record 6, Textual support, Spanish
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