TERMIUM Plus®
The Government of Canada’s terminology and linguistic data bank.
FUITE NEUTRONS [10 records]
Record 1 - internal organization data 2015-04-28
Record 1, English
Record 1, Subject field(s)
- Nuclear Physics
- Nuclear Fission Reactors
Record 1, Main entry term, English
- neutron cycle
1, record 1, English, neutron%20cycle
correct, standardized
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
The average energy, interaction and migration history of neutrons in a reactor, beginning with fission and continuing until they have leaked out or have been absorbed. 1, record 1, English, - neutron%20cycle
Record number: 1, Textual support number: 1 OBS
neutron cycle: term and definition standardized by ISO. 2, record 1, English, - neutron%20cycle
Record 1, French
Record 1, Domaine(s)
- Physique nucléaire
- Réacteurs nucléaires de fission
Record 1, Main entry term, French
- cycle des neutrons
1, record 1, French, cycle%20des%20neutrons
correct, masculine noun, standardized
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Dans un milieu multiplicateur, suite des événements par lesquels passent les neutrons depuis la fission jusqu'à leur fuite ou à leur absorption. 1, record 1, French, - cycle%20des%20neutrons
Record number: 1, Textual support number: 1 OBS
cycle des neutrons : terme et définition normalisés par l’ISO. 2, record 1, French, - cycle%20des%20neutrons
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 2015-04-28
Record 2, English
Record 2, Subject field(s)
- Nuclear Physics
Record 2, Main entry term, English
- neutron lifetime
1, record 2, English, neutron%20lifetime
correct, standardized
Record 2, Abbreviations, English
Record 2, Synonyms, English
Record 2, Textual support, English
Record number: 2, Textual support number: 1 DEF
The mean lifetime between production and disappearance by absorption of leakage in a given medium. 1, record 2, English, - neutron%20lifetime
Record number: 2, Textual support number: 1 OBS
neutron lifetime: term and definition standardized by ISO. 2, record 2, English, - neutron%20lifetime
Record 2, French
Record 2, Domaine(s)
- Physique nucléaire
Record 2, Main entry term, French
- durée de vie des neutrons
1, record 2, French, dur%C3%A9e%20de%20vie%20des%20neutrons
correct, feminine noun, standardized
Record 2, Abbreviations, French
Record 2, Synonyms, French
Record 2, Textual support, French
Record number: 2, Textual support number: 1 DEF
Temps moyen de vie des neutrons entre leur production et leur disparition par absorption ou fuite, dans un milieu donné. 1, record 2, French, - dur%C3%A9e%20de%20vie%20des%20neutrons
Record number: 2, Textual support number: 1 OBS
durée de vie des neutrons : terme et définition normalisés par l’ISO. 2, record 2, French, - dur%C3%A9e%20de%20vie%20des%20neutrons
Record 2, Spanish
Record 2, Textual support, Spanish
Record 3 - external organization data 2011-05-16
Record 3, English
Record 3, Subject field(s)
- Atomic Physics
- Nuclear Physics
- Radiation Protection
- Compartment - Canadian Nuclear Safety Commission
Record 3, Main entry term, English
- leakage
1, record 3, English, leakage
correct, standardized
Record 3, Abbreviations, English
Record 3, Synonyms, English
- neutron leakage 2, record 3, English, neutron%20leakage
correct
Record 3, Textual support, English
Record number: 3, Textual support number: 1 DEF
The net loss of neutrons from a region of a reactor by escape across the boundary. [Definition standardized by ISO.] 1, record 3, English, - leakage
Record number: 3, Textual support number: 1 OBS
leakage: term standardized by ISO. 3, record 3, English, - leakage
Record 3, French
Record 3, Domaine(s)
- Physique atomique
- Physique nucléaire
- Radioprotection
- Tiroir - Commission canadienne de sûreté nucléaire
Record 3, Main entry term, French
- fuite de neutrons
1, record 3, French, fuite%20de%20neutrons
correct, feminine noun, standardized
Record 3, Abbreviations, French
Record 3, Synonyms, French
Record 3, Textual support, French
Record number: 3, Textual support number: 1 DEF
Perte nette de neutrons à partir d’une région d’un réacteur par évasion à travers ses limites. [Définition normalisée par l’ISO.] 1, record 3, French, - fuite%20de%20neutrons
Record number: 3, Textual support number: 1 OBS
fuite de neutrons : terme normalisé par l'ISO. 2, record 3, French, - fuite%20de%20neutrons
Record 3, Spanish
Record 3, Textual support, Spanish
Record 4 - internal organization data 2010-12-15
Record 4, English
Record 4, Subject field(s)
- Nuclear Fission Reactors
Record 4, Main entry term, English
- steam superheater
1, record 4, English, steam%20superheater
correct
Record 4, Abbreviations, English
Record 4, Synonyms, English
Record 4, Textual support, English
Record number: 4, Textual support number: 1 CONT
The steam superheater in the land prototype … for Seawolf broke down after 1667 hours of operation. The initial suggestion was to install fast neutron reactors with a helium coolant in Skate-class submarines. 1, record 4, English, - steam%20superheater
Record 4, French
Record 4, Domaine(s)
- Réacteurs nucléaires de fission
Record 4, Main entry term, French
- surchauffeur de vapeur
1, record 4, French, surchauffeur%20de%20vapeur
correct, masculine noun
Record 4, Abbreviations, French
Record 4, Synonyms, French
Record 4, Textual support, French
Record number: 4, Textual support number: 1 CONT
Le Seawolf(États-Unis) était équipé d’un réacteur à neutrons épithermiques refroidi au sodium liquide qui n’ a que peu navigué en raison d’une fuite à un surchauffeur de vapeur. Très contesté par la marine américaine qui voyait mal le sodium liquide dans un environnement marin, il fut vite abandonné au bénéfice du Nautilus équipé d’un REP [réacteur à eau sous pression]. 1, record 4, French, - surchauffeur%20de%20vapeur
Record 4, Spanish
Record 4, Textual support, Spanish
Record 5 - internal organization data 2009-10-07
Record 5, English
Record 5, Subject field(s)
- Atomic Physics
Record 5, Main entry term, English
- neutron multiplication factor
1, record 5, English, neutron%20multiplication%20factor
correct
Record 5, Abbreviations, English
- keff 2, record 5, English, keff
correct
Record 5, Synonyms, English
- neutron multiplication coefficient 3, record 5, English, neutron%20multiplication%20coefficient
correct
- neutron multiplying factor 4, record 5, English, neutron%20multiplying%20factor
- constant k 5, record 5, English, constant%20k
Record 5, Textual support, English
Record number: 5, Textual support number: 1 DEF
The average number of neutrons that go on to cause another fission reaction. 4, record 5, English, - neutron%20multiplication%20factor
Record number: 5, Textual support number: 1 OBS
The remaining neutrons either fail to induce fission, or are never absorbed and exit the system. The value of k for a combination of two masses is always greater than of its components. In some cases its value is equal to the sum of the component k values. The magnitude of the difference depends on velocity and distance, as well as physical orientation. 6, record 5, English, - neutron%20multiplication%20factor
Record 5, French
Record 5, Domaine(s)
- Physique atomique
Record 5, Main entry term, French
- coefficient de multiplication des neutrons
1, record 5, French, coefficient%20de%20multiplication%20des%20neutrons
correct, masculine noun
Record 5, Abbreviations, French
Record 5, Synonyms, French
Record 5, Textual support, French
Record number: 5, Textual support number: 1 CONT
Un accident de criticité survient lorsque le coefficient de multiplication des neutrons(k eff, rapport entre le nombre de neutrons produits par fission et le nombre de neutrons disparaissant par capture ou par fuite hors du système considéré) dans un milieu fissile devient supérieur à 1. 1, record 5, French, - coefficient%20de%20multiplication%20des%20neutrons
Record 5, Spanish
Record 5, Textual support, Spanish
Record 6 - internal organization data 2008-02-13
Record 6, English
Record 6, Subject field(s)
- Atomic Physics
- Nuclear Science and Technology
- Nuclear Power Stations
Record 6, Main entry term, English
- effective multiplication factor
1, record 6, English, effective%20multiplication%20factor
correct, standardized
Record 6, Abbreviations, English
Record 6, Synonyms, English
- effective multiplication constant 2, record 6, English, effective%20multiplication%20constant
correct
- criticality factor 3, record 6, English, criticality%20factor
correct, less frequent
- keff 4, record 6, English, keff
see observation
- keff 4, record 6, English, keff
Record 6, Textual support, English
Record number: 6, Textual support number: 1 DEF
The multiplication factor evaluated for a finite medium. 5, record 6, English, - effective%20multiplication%20factor
Record number: 6, Textual support number: 1 OBS
Symbol: keff. 6, record 6, English, - effective%20multiplication%20factor
Record number: 6, Textual support number: 2 OBS
effective multiplication factor: term standardized by ISO. 7, record 6, English, - effective%20multiplication%20factor
Record 6, French
Record 6, Domaine(s)
- Physique atomique
- Sciences et techniques nucléaires
- Centrales nucléaires
Record 6, Main entry term, French
- facteur de multiplication effectif
1, record 6, French, facteur%20de%20multiplication%20effectif
correct, masculine noun, standardized
Record 6, Abbreviations, French
- keff 2, record 6, French, keff
see observation
Record 6, Synonyms, French
Record 6, Textual support, French
Record number: 6, Textual support number: 1 DEF
Facteur de multiplication d’un milieu de composition et de géométrie données. 3, record 6, French, - facteur%20de%20multiplication%20effectif
Record number: 6, Textual support number: 1 CONT
Facteur de multiplication. Rapport du nombre total de neutrons produits au cours d’un intervalle de temps au nombre total de neutrons perdus par absorption et par fuite au cours du même intervalle [...]; quand cette quantité [...] est évaluée pour un milieu fini elle est désignée sous le nom de facteur de multiplication effectif [...] 4, record 6, French, - facteur%20de%20multiplication%20effectif
Record number: 6, Textual support number: 1 OBS
symbole : keff. 4, record 6, French, - facteur%20de%20multiplication%20effectif
Record number: 6, Textual support number: 2 OBS
facteur de multiplication effectif : terme normalisé par l’ISO et adopté en 1999 par la Commission spécialisée de terminologie et de néologie de l’ingénierie nucléaire. 5, record 6, French, - facteur%20de%20multiplication%20effectif
Record 6, Key term(s)
- facteur effectif de multiplication
Record 6, Spanish
Record 6, Campo(s) temático(s)
- Física atómica
- Ciencia y tecnología nucleares
- Centrales nucleares
Record 6, Main entry term, Spanish
- factor de multiplicación efectivo
1, record 6, Spanish, factor%20de%20multiplicaci%C3%B3n%20efectivo
masculine noun
Record 6, Abbreviations, Spanish
Record 6, Synonyms, Spanish
Record 6, Textual support, Spanish
Record 7 - internal organization data 2008-02-13
Record 7, English
Record 7, Subject field(s)
- Atomic Physics
- Nuclear Science and Technology
- Nuclear Power Stations
Record 7, Main entry term, English
- multiplication factor
1, record 7, English, multiplication%20factor
correct, standardized
Record 7, Abbreviations, English
Record 7, Synonyms, English
- multiplication constant 2, record 7, English, multiplication%20constant
correct
- reproduction constant 3, record 7, English, reproduction%20constant
- reproduction factor 4, record 7, English, reproduction%20factor
Record 7, Textual support, English
Record number: 7, Textual support number: 1 DEF
The ratio of the total number of neutrons produced during a time interval (excluding neutrons produced by sources whose strengths are not a function of fission rate) to the total number of neutrons lost by absorption and leakage during the same interval. [Definition standardized by ISO.] 2, record 7, English, - multiplication%20factor
Record number: 7, Textual support number: 1 OBS
When the quantity is evaluated for an infinite medium or for an infinite repeating lattice, it is referred to as the "infinite multiplication factor" ..., and when the quantity is evaluated for a finite medium, it is referred to as the "effective multiplication factor" ... 2, record 7, English, - multiplication%20factor
Record number: 7, Textual support number: 2 OBS
multiplication factor: term standardized by ISO. 4, record 7, English, - multiplication%20factor
Record 7, French
Record 7, Domaine(s)
- Physique atomique
- Sciences et techniques nucléaires
- Centrales nucléaires
Record 7, Main entry term, French
- facteur de multiplication
1, record 7, French, facteur%20de%20multiplication
correct, masculine noun, standardized
Record 7, Abbreviations, French
- k 2, record 7, French, k
see observation
Record 7, Synonyms, French
Record 7, Textual support, French
Record number: 7, Textual support number: 1 DEF
Rapport du nombre total de neutrons produits au cours d’un intervalle de temps au nombre total de neutrons perdus par absorption et par fuite au cours du même intervalle(à l'exclusion des neutrons produits par des sources dont les intensités sont indépendantes du taux de fission) [...] [Définition normalisée par l'ISO. ] 3, record 7, French, - facteur%20de%20multiplication
Record number: 7, Textual support number: 1 OBS
Quand cette quantité est évaluée pour un milieu infini ou pour un réseau se répétant indéfiniment, elle est désignée sous le nom de facteur de multiplication infini [...] et quand elle est évaluée pour un milieu fini elle est désignée sous le nom de facteur de multiplication effectif [...] 3, record 7, French, - facteur%20de%20multiplication
Record number: 7, Textual support number: 2 OBS
Le facteur de multiplication est désigné généralement par le symbole k 4, record 7, French, - facteur%20de%20multiplication
Record number: 7, Textual support number: 3 OBS
facteur de multiplication : terme normalisé par l’ISO. 5, record 7, French, - facteur%20de%20multiplication
Record 7, Spanish
Record 7, Campo(s) temático(s)
- Física atómica
- Ciencia y tecnología nucleares
- Centrales nucleares
Record 7, Main entry term, Spanish
- factor de multiplicación
1, record 7, Spanish, factor%20de%20multiplicaci%C3%B3n
masculine noun
Record 7, Abbreviations, Spanish
Record 7, Synonyms, Spanish
Record 7, Textual support, Spanish
Record 8 - external organization data 2006-03-24
Record 8, English
Record 8, Subject field(s)
- Control Instrumentation (Mechanical Components)
- Nuclear Fission Reactors
- Compartment - Canadian Nuclear Safety Commission
Record 8, Main entry term, English
- moderator level control 1, record 8, English, moderator%20level%20control
Record 8, Abbreviations, English
Record 8, Synonyms, English
Record 8, Textual support, English
Record number: 8, Textual support number: 1 CONT
Moderator level control is part of the regulation system on dump tank units. ... Neutron leakage from the core increases as the moderator level drops. This reduces reactor power. (Reactivity increases as the calandria refills to its normal operating level.) 1, record 8, English, - moderator%20level%20control
Record 8, French
Record 8, Domaine(s)
- Dispositifs de commande (Composants mécaniques)
- Réacteurs nucléaires de fission
- Tiroir - Commission canadienne de sûreté nucléaire
Record 8, Main entry term, French
- contrôle de niveau du modérateur
1, record 8, French, contr%C3%B4le%20de%20niveau%20du%20mod%C3%A9rateur
masculine noun
Record 8, Abbreviations, French
Record 8, Synonyms, French
Record 8, Textual support, French
Record number: 8, Textual support number: 1 CONT
Le contrôle du niveau du modérateur fait partie du système de régulation dans les réservoirs de drainage. [...] La fuite de neutrons hors du coeur augmente à mesure que le niveau du modérateur baisse. Cela permet de réduire la puissance du réacteur.(La réactivité augmente à mesure que la calandre se remplit jusqu'à son niveau de fonctionnement normal.) 1, record 8, French, - contr%C3%B4le%20de%20niveau%20du%20mod%C3%A9rateur
Record 8, Spanish
Record 8, Textual support, Spanish
Record 9 - internal organization data 2004-07-15
Record 9, English
Record 9, Subject field(s)
- Atomic Physics
Record 9, Main entry term, English
- neutron economy
1, record 9, English, neutron%20economy
correct, standardized
Record 9, Abbreviations, English
Record 9, Synonyms, English
Record 9, Textual support, English
Record number: 9, Textual support number: 1 DEF
The extent to which neutrons are used in desired ways instead of being lost by leakage or useless absorptions. 2, record 9, English, - neutron%20economy
Record number: 9, Textual support number: 1 OBS
neutron economy: term and definition standardized by ISO. 3, record 9, English, - neutron%20economy
Record 9, French
Record 9, Domaine(s)
- Physique atomique
Record 9, Main entry term, French
- économie des neutrons
1, record 9, French, %C3%A9conomie%20des%20neutrons
correct, feminine noun, standardized
Record 9, Abbreviations, French
Record 9, Synonyms, French
Record 9, Textual support, French
Record number: 9, Textual support number: 1 DEF
Qualitatif représentant la mesure dans laquelle les neutrons sont utilisés de la façon souhaitée au lieu d’être perdus par fuite ou absorptions inutiles. 1, record 9, French, - %C3%A9conomie%20des%20neutrons
Record number: 9, Textual support number: 1 OBS
économie des neutrons : terme et définition normalisés par l’ISO. 2, record 9, French, - %C3%A9conomie%20des%20neutrons
Record 9, Spanish
Record 9, Textual support, Spanish
Record 10 - internal organization data 1976-06-19
Record 10, English
Record 10, Subject field(s)
- Physics
Record 10, Main entry term, English
- escape of neutrons 1, record 10, English, escape%20of%20neutrons
Record 10, Abbreviations, English
Record 10, Synonyms, English
Record 10, Textual support, English
Record 10, French
Record 10, Domaine(s)
- Physique
Record 10, Main entry term, French
- fuite des neutrons 1, record 10, French, fuite%20des%20neutrons
Record 10, Abbreviations, French
Record 10, Synonyms, French
Record 10, Textual support, French
Record number: 10, Textual support number: 1 OBS
Record 10, Spanish
Record 10, Textual support, Spanish
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