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NEUTRON SPECTRUM [14 records]
Record 1 - internal organization data 2016-11-23
Record 1, English
Record 1, Subject field(s)
- Atomic Physics
Record 1, Main entry term, English
- relative conversion ratio
1, record 1, English, relative%20conversion%20ratio
correct, standardized
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
Instantaneous conversion ratio in a reactor, relative to the instantaneous conversion ratio in fuel of the same composition in some specified(usually thermal) neutron spectrum. [Definition standardized by ISO. ] 1, record 1, English, - relative%20conversion%20ratio
Record number: 1, Textual support number: 1 OBS
The relative conversion ratio lends itself more readily to experimental determination than the absolute conversion ratio. 1, record 1, English, - relative%20conversion%20ratio
Record number: 1, Textual support number: 2 OBS
relative conversion ratio: term standardized by ISO. 3, record 1, English, - relative%20conversion%20ratio
Record number: 1, Textual support number: 3 OBS
RCR: abbreviation extracted from the “Glossaire de l’énergie nucléaire” and reproduced with permission of the Organisation for Economic Co-operation and Development. 3, record 1, English, - relative%20conversion%20ratio
Record 1, French
Record 1, Domaine(s)
- Physique atomique
Record 1, Main entry term, French
- rapport de conversion relatif
1, record 1, French, rapport%20de%20conversion%20relatif
masculine noun, standardized
Record 1, Abbreviations, French
Record 1, Synonyms, French
- taux de conversion relatif 2, record 1, French, taux%20de%20conversion%20relatif
masculine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Rapport de conversion instantané dans un réacteur, ramené au rapport de conversion instantané dans du combustible de même composition soumis à un flux de neutrons de spectre spécifié (habituellement thermique). [Définition normalisée par l'ISO.] 3, record 1, French, - rapport%20de%20conversion%20relatif
Record number: 1, Textual support number: 1 OBS
Le rapport de conversion relatif se prête plus aisément à une détermination expérimentale que le rapport de conversion absolu. 3, record 1, French, - rapport%20de%20conversion%20relatif
Record number: 1, Textual support number: 2 OBS
rapport de conversion relatif : terme normalisé par l'ISO. 4, record 1, French, - rapport%20de%20conversion%20relatif
Record number: 1, Textual support number: 3 OBS
taux de conversion relatif : terme extrait du «Glossaire de l’énergie nucléaire» et reproduit avec l’autorisation de l’Organisation de coopération et de développement économiques. 4, record 1, French, - rapport%20de%20conversion%20relatif
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 2015-06-03
Record 2, English
Record 2, Subject field(s)
- System Names
- Astronomy
Record 2, Main entry term, English
- Canadian High Energy Neutron Spectrometry System
1, record 2, English, Canadian%20High%20Energy%20Neutron%20Spectrometry%20System
correct
Record 2, Abbreviations, English
- CHENSS 1, record 2, English, CHENSS
correct
Record 2, Synonyms, English
Record 2, Textual support, English
Record number: 2, Textual support number: 1 OBS
The Canadian High Energy Neutron Spectrometry System(CHENSS) will increase scientific understanding of the high-energy neutron spectrum in space. This will help understand and plan mitigations for radiation risk to astronauts during long term space missions. 1, record 2, English, - Canadian%20High%20Energy%20Neutron%20Spectrometry%20System
Record 2, French
Record 2, Domaine(s)
- Noms de systèmes
- Astronomie
Record 2, Main entry term, French
- Système canadien de spectrométrie de neutrons à haute énergie
1, record 2, French, Syst%C3%A8me%20canadien%20de%20spectrom%C3%A9trie%20de%20neutrons%20%C3%A0%20haute%20%C3%A9nergie
correct, masculine noun
Record 2, Abbreviations, French
- CHENSS 1, record 2, French, CHENSS
correct, masculine noun
Record 2, Synonyms, French
Record 2, Textual support, French
Record number: 2, Textual support number: 1 OBS
Le Système canadien de spectrométrie de neutrons à haute énergie [...] vise à accroître la compréhension scientifique du spectre des neutrons à haute énergie dans l'espace. Cela facilitera la planification des mesures d'atténuation des risques attribuables aux rayonnements auxquels sont exposés les astronautes au cours de missions spatiales de longue durée. 1, record 2, French, - Syst%C3%A8me%20canadien%20de%20spectrom%C3%A9trie%20de%20neutrons%20%C3%A0%20haute%20%C3%A9nergie
Record 2, Spanish
Record 2, Textual support, Spanish
Record 3 - internal organization data 2015-05-07
Record 3, English
Record 3, Subject field(s)
- Nuclear Physics
Record 3, Main entry term, English
- rho 28
1, record 3, English, rho%2028
correct, standardized
Record 3, Abbreviations, English
Record 3, Synonyms, English
Record 3, Textual support, English
Record number: 3, Textual support number: 1 DEF
The ratio of the number of neutron captures in238U [uranium] for a given uranium fuel above a specified effective cadmium cut-off to that below it in a given neutron spectrum. 1, record 3, English, - rho%2028
Record number: 3, Textual support number: 1 OBS
The number 28 is formed from the figures of the units of the atomic number (92) and the mass number (238) of the nuclide considered. 1, record 3, English, - rho%2028
Record number: 3, Textual support number: 2 OBS
rho 28: term and definition standardized by ISO. 2, record 3, English, - rho%2028
Record 3, French
Record 3, Domaine(s)
- Physique nucléaire
Record 3, Main entry term, French
- rho 28
1, record 3, French, rho%2028
correct, masculine noun, standardized
Record 3, Abbreviations, French
Record 3, Synonyms, French
Record 3, Textual support, French
Record number: 3, Textual support number: 1 DEF
Pour un spectre neutronique donné dans un combustible nucléaire, rapport du nombre de captures de neutrons dans le238U [uranium], d'énergie supérieure à un seuil cadmium effectif spécifié, au nombre de captures de neutrons d'énergie inférieure à ce seuil. 1, record 3, French, - rho%2028
Record number: 3, Textual support number: 1 OBS
Le nombre 28 est formé avec les chiffres des unités du numéro atomique (92) et du nombre de masse (238) du nucléide considéré. 1, record 3, French, - rho%2028
Record number: 3, Textual support number: 2 OBS
rho 28 : terme et définition normalisés par l'ISO. 2, record 3, French, - rho%2028
Record 3, Spanish
Record 3, Textual support, Spanish
Record 4 - internal organization data 2015-04-29
Record 4, English
Record 4, Subject field(s)
- Nuclear Physics
Record 4, Main entry term, English
- Wigner-Wilkins method
1, record 4, English, Wigner%2DWilkins%20method
correct, standardized
Record 4, Abbreviations, English
Record 4, Synonyms, English
Record 4, Textual support, English
Record number: 4, Textual support number: 1 DEF
A method for calculating the thermal neutron spectrum in a hydrogenous medium using the free-gas model. 1, record 4, English, - Wigner%2DWilkins%20method
Record number: 4, Textual support number: 1 OBS
Wigner-Wilkins method: term and definition standardized by ISO. 2, record 4, English, - Wigner%2DWilkins%20method
Record 4, French
Record 4, Domaine(s)
- Physique nucléaire
Record 4, Main entry term, French
- méthode de Wigner-Wilkins
1, record 4, French, m%C3%A9thode%20de%20Wigner%2DWilkins
correct, feminine noun, standardized
Record 4, Abbreviations, French
Record 4, Synonyms, French
Record 4, Textual support, French
Record number: 4, Textual support number: 1 DEF
Méthode de calcul du spectre des neutrons thermiques dans un milieu hydrogéné, utilisant le mode de gaz libre. 1, record 4, French, - m%C3%A9thode%20de%20Wigner%2DWilkins
Record number: 4, Textual support number: 1 OBS
méthode de Wigner-Wilkins : terme et définition normalisés par l'ISO. 2, record 4, French, - m%C3%A9thode%20de%20Wigner%2DWilkins
Record 4, Spanish
Record 4, Textual support, Spanish
Record 5 - internal organization data 2015-04-29
Record 5, English
Record 5, Subject field(s)
- Nuclear Fission Reactors
Record 5, Main entry term, English
- spectral shift reactor
1, record 5, English, spectral%20shift%20reactor
correct, standardized
Record 5, Abbreviations, English
Record 5, Synonyms, English
Record 5, Textual support, English
Record number: 5, Textual support number: 1 DEF
A reactor in which the neutron spectrum may be adjusted for control or other purposes by varying the properties or amount of moderator. 1, record 5, English, - spectral%20shift%20reactor
Record number: 5, Textual support number: 1 OBS
spectral shift reactor: term and definition standardized by ISO. 2, record 5, English, - spectral%20shift%20reactor
Record 5, French
Record 5, Domaine(s)
- Réacteurs nucléaires de fission
Record 5, Main entry term, French
- réacteur à dérive spectrale
1, record 5, French, r%C3%A9acteur%20%C3%A0%20d%C3%A9rive%20spectrale
correct, masculine noun, standardized
Record 5, Abbreviations, French
Record 5, Synonyms, French
Record 5, Textual support, French
Record number: 5, Textual support number: 1 DEF
Réacteur dans lequel le spectre des neutrons peut être ajusté pour la commande ou dans un autre but, en modifiant les propriétés ou la quantité de modérateur. 1, record 5, French, - r%C3%A9acteur%20%C3%A0%20d%C3%A9rive%20spectrale
Record number: 5, Textual support number: 1 OBS
réacteur à dérive spectrale : terme et définition normalisés par l'ISO. 2, record 5, French, - r%C3%A9acteur%20%C3%A0%20d%C3%A9rive%20spectrale
Record 5, Spanish
Record 5, Textual support, Spanish
Record 6 - internal organization data 2015-04-29
Record 6, English
Record 6, Subject field(s)
- Nuclear Fission Reactors
Record 6, Main entry term, English
- well-moderated
1, record 6, English, well%2Dmoderated
correct, standardized
Record 6, Abbreviations, English
Record 6, Synonyms, English
Record 6, Textual support, English
Record number: 6, Textual support number: 1 DEF
Having a moderator-to-fuel volume ratio such that the lower-energy part of the neutron spectrum can be approximated by a Maxwell distribution and such that the greater part of the neutron population falls within this distribution. 1, record 6, English, - well%2Dmoderated
Record number: 6, Textual support number: 1 OBS
well-moderated: term and definition standardized by ISO. 2, record 6, English, - well%2Dmoderated
Record 6, French
Record 6, Domaine(s)
- Réacteurs nucléaires de fission
Record 6, Main entry term, French
- bien modéré
1, record 6, French, bien%20mod%C3%A9r%C3%A9
correct, masculine noun, standardized
Record 6, Abbreviations, French
Record 6, Synonyms, French
Record 6, Textual support, French
Record number: 6, Textual support number: 1 DEF
Présentant un rapport de modérateur-combustible tel que la partie des énergies inférieures du spectre de neutrons peut être approximativement décrite par une distribution maxwellienne et tel que la plus grande partie de la population des neutrons est comprise dans cette distribution. 1, record 6, French, - bien%20mod%C3%A9r%C3%A9
Record number: 6, Textual support number: 1 OBS
bien modéré : terme et définition normalisés par l'ISO. 2, record 6, French, - bien%20mod%C3%A9r%C3%A9
Record 6, Spanish
Record 6, Textual support, Spanish
Record 7 - internal organization data 2012-01-09
Record 7, English
Record 7, Subject field(s)
- Nuclear Physics
Record 7, Main entry term, English
- neutron energy spectrum effect
1, record 7, English, neutron%20energy%20spectrum%20effect
correct
Record 7, Abbreviations, English
Record 7, Synonyms, English
- neutron spectrum effect 2, record 7, English, neutron%20spectrum%20effect
correct
Record 7, Textual support, English
Record number: 7, Textual support number: 1 CONT
Neutron energy spectrum effect. Changes in the temperatures of the various materials in the core with which the neutrons interact, will alter the energy distribution of the thermal neutrons(also called the “neutron temperature”). 1, record 7, English, - neutron%20energy%20spectrum%20effect
Record 7, French
Record 7, Domaine(s)
- Physique nucléaire
Record 7, Main entry term, French
- effet de spectre
1, record 7, French, effet%20de%20spectre
correct, masculine noun
Record 7, Abbreviations, French
Record 7, Synonyms, French
Record 7, Textual support, French
Record number: 7, Textual support number: 1 CONT
L’effet de spectre est lié à la modification de la répartition énergétique des neutrons : c’est principalement le spectre des neutrons thermiques, lié au spectre de Maxwell et donc à kT, qui est concerné; T n’est plus maintenant la température du combustible mais celle du modérateur. Si toutes les sections efficaces variaient proportionnellement avec la vitesse des neutrons, par exemple selon une loi en 1/v [où v représente la vélocité des neutrons], cette modification de spectre ne modifierait pas la réactivité. 1, record 7, French, - effet%20de%20spectre
Record 7, Spanish
Record 7, Textual support, Spanish
Record 8 - internal organization data 2010-12-21
Record 8, English
Record 8, Subject field(s)
- Atomic Physics
- Nuclear Fission Reactors
Record 8, Main entry term, English
- epithermal neutron spectrum
1, record 8, English, epithermal%20neutron%20spectrum
correct
Record 8, Abbreviations, English
Record 8, Synonyms, English
Record 8, Textual support, English
Record number: 8, Textual support number: 1 CONT
Molten salt reactors. While not strictly a fast neutron reactor, the uranium fuel is dissolved in the sodium fluoride salt coolant which circulates through graphite core channels to achieve some moderation and an epithermal neutron spectrum. 1, record 8, English, - epithermal%20neutron%20spectrum
Record 8, French
Record 8, Domaine(s)
- Physique atomique
- Réacteurs nucléaires de fission
Record 8, Main entry term, French
- spectre neutronique épithermique
1, record 8, French, spectre%20neutronique%20%C3%A9pithermique
correct, masculine noun
Record 8, Abbreviations, French
Record 8, Synonyms, French
Record 8, Textual support, French
Record number: 8, Textual support number: 1 CONT
Réacteur à sels fondus (RSF ou MSR) […] Le spectre neutronique épithermique est obtenu par le passage du sel dans les canaux d’un bloc de graphite qui délimite la géométrie du cœur […] 1, record 8, French, - spectre%20neutronique%20%C3%A9pithermique
Record 8, Spanish
Record 8, Textual support, Spanish
Record 9 - internal organization data 2009-11-09
Record 9, English
Record 9, Subject field(s)
- Atomic Physics
Record 9, Main entry term, English
- fission neutron spectrum
1, record 9, English, fission%20neutron%20spectrum
correct
Record 9, Abbreviations, English
Record 9, Synonyms, English
Record 9, Textual support, English
Record number: 9, Textual support number: 1 CONT
The distribution of neutron energies in a reactor differs from the fission neutron spectrum due to the slowing down of neutrons in elastic and inelastic collisions with fuel, coolant and construction material. 1, record 9, English, - fission%20neutron%20spectrum
Record 9, French
Record 9, Domaine(s)
- Physique atomique
Record 9, Main entry term, French
- spectre neutrons de fission
1, record 9, French, spectre%20neutrons%20de%20fission
correct, masculine noun
Record 9, Abbreviations, French
Record 9, Synonyms, French
Record 9, Textual support, French
Record number: 9, Textual support number: 1 CONT
Spectres neutrons de fission (fission induite par un neutron thermique). 1, record 9, French, - spectre%20neutrons%20de%20fission
Record 9, Spanish
Record 9, Textual support, Spanish
Record 10 - internal organization data 2009-10-16
Record 10, English
Record 10, Subject field(s)
- Nuclear Physics
Record 10, Main entry term, English
- fast neutron spectrum
1, record 10, English, fast%20neutron%20spectrum
correct
Record 10, Abbreviations, English
Record 10, Synonyms, English
Record 10, Textual support, English
Record number: 10, Textual support number: 1 CONT
A fast neutron spectrum enables maximum fission with minimum build-up of new actinides due to neutron capture. This process of converting fertile isotopes to fissile ones is called breeding. 1, record 10, English, - fast%20neutron%20spectrum
Record 10, French
Record 10, Domaine(s)
- Physique nucléaire
Record 10, Main entry term, French
- spectre à neutrons rapides
1, record 10, French, spectre%20%C3%A0%20neutrons%20rapides
correct, masculine noun
Record 10, Abbreviations, French
Record 10, Synonyms, French
Record 10, Textual support, French
Record number: 10, Textual support number: 1 CONT
À plus long terme, ces concepts de réacteurs pourraient évoluer vers les très hautes températures (de l'ordre de 1 000 °C) nécessaires pour la production thermochimique de l'hydrogène et la synthèse de carburants liquides, et (ou) vers des spectres à neutrons rapides. 1, record 10, French, - spectre%20%C3%A0%20neutrons%20rapides
Record 10, Spanish
Record 10, Textual support, Spanish
Record 11 - internal organization data 2009-10-09
Record 11, English
Record 11, Subject field(s)
- Atomic Physics
Record 11, Main entry term, English
- hardened neutron spectrum
1, record 11, English, hardened%20neutron%20spectrum
correct
Record 11, Abbreviations, English
Record 11, Synonyms, English
Record 11, Textual support, English
Record number: 11, Textual support number: 1 CONT
... at least partially compensating for said measure of excess reactivity at the beginning of core life by fully inserting said neutron-spectral-shift displacer rods into said core and separately controlling reactor operation by using neutron absorption, with the displacement of said water coolant moderator by said neutron-spectral-shift displacer rods resulting in a hardened neutron spectrum which functions to convert fertile material constituents of said fuel to fissionable material... 1, record 11, English, - hardened%20neutron%20spectrum
Record 11, French
Record 11, Domaine(s)
- Physique atomique
Record 11, Main entry term, French
- spectre neutronique durci
1, record 11, French, spectre%20neutronique%20durci
correct, masculine noun
Record 11, Abbreviations, French
Record 11, Synonyms, French
Record 11, Textual support, French
Record number: 11, Textual support number: 1 CONT
Par ailleurs, du matériau combustible mixte UO2-PuO2(MOX) est actuellement introduit dans certains réacteurs d'EDF [Électricité de France], afin de consommer une partie du plutonium formé lors des cycles précédents. Ces éléments combustibles nécessitent un contrôle de leur réactivité en début de vie plus efficace que celui des éléments UO2 classiques. En effet, ils génèrent un spectre neutronique «durci», c'est-à-dire déporté vers des énergies de neutrons plus élevées, d'où une perte d'efficacité des éléments absorbants classiques ce qui nécessite une augmentation du nombre de barres de commande dans le cas du MOX. 1, record 11, French, - spectre%20neutronique%20durci
Record 11, Spanish
Record 11, Textual support, Spanish
Record 12 - internal organization data 2008-11-05
Record 12, English
Record 12, Subject field(s)
- Radiological Physics (Theory and Application)
- Electromagnetic Radiation
Record 12, Main entry term, English
- spectral shift control
1, record 12, English, spectral%20shift%20control
correct
Record 12, Abbreviations, English
Record 12, Synonyms, English
Record 12, Textual support, English
Record number: 12, Textual support number: 1 DEF
A special type of moderator control, in which the neutron spectrum is intentionally changed. 1, record 12, English, - spectral%20shift%20control
Record 12, French
Record 12, Domaine(s)
- Physique radiologique et applications
- Rayonnements électromagnétiques
Record 12, Main entry term, French
- commande par déviation spectrale
1, record 12, French, commande%20par%20d%C3%A9viation%20spectrale
feminine noun
Record 12, Abbreviations, French
Record 12, Synonyms, French
- commande par dérive spectrale 2, record 12, French, commande%20par%20d%C3%A9rive%20spectrale
feminine noun
Record 12, Textual support, French
Record 12, Spanish
Record 12, Textual support, Spanish
Record 13 - internal organization data 2008-06-26
Record 13, English
Record 13, Subject field(s)
- Nuclear Fission Reactors
- Nuclear Power Stations
Record 13, Main entry term, English
- spectral-shift reactor
1, record 13, English, spectral%2Dshift%20reactor
correct
Record 13, Abbreviations, English
Record 13, Synonyms, English
- spectral shift reactor 2, record 13, English, spectral%20shift%20reactor
correct
Record 13, Textual support, English
Record number: 13, Textual support number: 1 DEF
A reactor in which, for control or other purposes, the neutron spectrum may be adjusted by varying the properties or amount of moderator. 1, record 13, English, - spectral%2Dshift%20reactor
Record 13, French
Record 13, Domaine(s)
- Réacteurs nucléaires de fission
- Centrales nucléaires
Record 13, Main entry term, French
- réacteur à déviation spectrale
1, record 13, French, r%C3%A9acteur%20%C3%A0%20d%C3%A9viation%20spectrale
masculine noun
Record 13, Abbreviations, French
Record 13, Synonyms, French
Record 13, Textual support, French
Record 13, Spanish
Record 13, Textual support, Spanish
Record 14 - internal organization data 1992-02-25
Record 14, English
Record 14, Subject field(s)
- Nuclear Physics
Record 14, Main entry term, English
- delta 28
1, record 14, English, delta%2028
correct, standardized
Record 14, Abbreviations, English
Record 14, Synonyms, English
Record 14, Textual support, English
Record number: 14, Textual support number: 1 DEF
For a given uranium fuel in a given neutron spectrum, the ratio of the total number of238U fissions to the number of235U fissions caused by the thermal neutrons. In practice, [delta] 28 is often set equal to the ratio of the total number of238U fissions to the total number of235U fissions. 1, record 14, English, - delta%2028
Record number: 14, Textual support number: 1 OBS
The number 28 is formed from the figures of the units of the atomic number (92) and the mass number (238) of the isotope considered. 1, record 14, English, - delta%2028
Record number: 14, Textual support number: 2 OBS
Term standardized by ISO. 2, record 14, English, - delta%2028
Record 14, French
Record 14, Domaine(s)
- Physique nucléaire
Record 14, Main entry term, French
- delta 28
1, record 14, French, delta%2028
masculine noun, standardized
Record 14, Abbreviations, French
Record 14, Synonyms, French
Record 14, Textual support, French
Record number: 14, Textual support number: 1 DEF
Pour un combustible à l'uranium donné soumis à un flux de neutrons de spectre déterminé, rapport du nombre total des fissions de l'uranium 238 au nombre total des fissions de l'uranium 235 dues aux neutrons thermiques. En pratique, on prend souvent le rapport du nombre total de fissions dans l'uranium 238 au nombre total de fissions dans l'uranium 235. 1, record 14, French, - delta%2028
Record number: 14, Textual support number: 1 OBS
Le nombre 28 est formé avec les chiffres des unités du numéro atomique (92) et du nombre de masse (238) de l'isotope considéré. 1, record 14, French, - delta%2028
Record number: 14, Textual support number: 2 OBS
Terme normalisé par l'ISO. 2, record 14, French, - delta%2028
Record 14, Spanish
Record 14, Textual support, Spanish
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