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NEUTRON LIFETIME [5 records]
Record 1 - internal organization data 2017-02-15
Record 1, English
Record 1, Subject field(s)
- Calculating Procedures (Mathematics)
- Nuclear Physics
Record 1, Main entry term, English
- first-collision probability method
1, record 1, English, first%2Dcollision%20probability%20method
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- first collision probability method 2, record 1, English, first%20collision%20probability%20method
correct
- first-collisions probability method 2, record 1, English, first%2Dcollisions%20probability%20method
Record 1, Textual support, English
Record number: 1, Textual support number: 1 CONT
The calculation of the neutron lifetime by the first-collisions probability method for nuclear power facilities … are described by a universal geometry … Algorithms for calculating the matrix elements using a universal geometric module, which … is used in programs for performing Monte Carlo calculations of particle transfer … 2, record 1, English, - first%2Dcollision%20probability%20method
Record 1, French
Record 1, Domaine(s)
- Procédés de calcul (Mathématiques)
- Physique nucléaire
Record 1, Main entry term, French
- méthode des probabilités de première collision
1, record 1, French, m%C3%A9thode%20des%20probabilit%C3%A9s%20de%20premi%C3%A8re%20collision
correct, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
Méthode des probabilités de première collision. Cette approche intégrale de l’équation de Boltzmann avec correction de transport est celle mise en œuvre dans les calculs d’assemblage de réacteurs. En pratique, l’opérateur intégral de Peierls est traité par une technique de volumes finis Vi (pour les réacteurs à eau, un à dix pour chaque pastille de combustible, un à trois pour chaque élément de modérateur associé, etc., tout cela dans une modélisation à deux dimensions de l’assemblage, supposé donc infiniment haut). 1, record 1, French, - m%C3%A9thode%20des%20probabilit%C3%A9s%20de%20premi%C3%A8re%20collision
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 - 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 - internal organization data 2000-04-26
Record 4, English
Record 4, Subject field(s)
- Geophysics
- Geological Prospecting
Record 4, Main entry term, English
- pulsed neutron log
1, record 4, English, pulsed%20neutron%20log
correct
Record 4, Abbreviations, English
Record 4, Synonyms, English
- pulsed-neutron-capture log 2, record 4, English, pulsed%2Dneutron%2Dcapture%20log
correct
- pulsed-neutron survey 3, record 4, English, pulsed%2Dneutron%20survey
correct
- Neutron Lifetime Log 4, record 4, English, Neutron%20Lifetime%20Log
correct, trademark
- NLL 5, record 4, English, NLL
correct, trademark
- NLL 5, record 4, English, NLL
- Thermal Decay Time log 4, record 4, English, Thermal%20Decay%20Time%20log
correct, trademark
- TDT log 5, record 4, English, TDT%20log
correct, trademark
- TDT log 5, record 4, English, TDT%20log
Record 4, Textual support, English
Record number: 4, Textual support number: 1 DEF
A specialized radioactivity log of neutron-gamma log type. A neutron generator produces short bursts of high-energy neutrons (about 14 MeV), which are slowed in the borehole and nearby rocks to thermal energy level (about 0.025 eV); capture by nuclei (especially chlorine) results in gamma-ray emissions. The log is used in cased oil wells to determine changes in fluid saturation during oil production. 2, record 4, English, - pulsed%20neutron%20log
Record number: 4, Textual support number: 1 OBS
[This log] is marketed under several names, e. g. Neutron Lifetime Log, Thermal Decay Time Log. 2, record 4, English, - pulsed%20neutron%20log
Record 4, French
Record 4, Domaine(s)
- Géophysique
- Prospection géologique
Record 4, Main entry term, French
- diagraphie de relaxation neutronique
1, record 4, French, diagraphie%20de%20relaxation%20neutronique
correct, feminine noun
Record 4, Abbreviations, French
Record 4, Synonyms, French
- diagraphie de neutrons pulsés 1, record 4, French, diagraphie%20de%20neutrons%20puls%C3%A9s
correct, feminine noun
- Neutron Lifetime Log 1, record 4, French, Neutron%20Lifetime%20Log
correct, trademark
- Thermal Decaytime Log 1, record 4, French, Thermal%20Decaytime%20Log
correct, trademark
Record 4, Textual support, French
Record number: 4, Textual support number: 1 CONT
[La] diagraphie de neutrons pulsés [...] est appelée «Neutron Lifetime Log» (NLL) par Dresser-Atlas et «Thermal Decaytime Log» (TDT) par Schlumberger. Des neutrons très rapides (14 MeV) sont émis par impulsions de 20 à 30 microsecondes avec une récurrence de 1 000 impulsions par seconde. Les sondes sont de type cylindrique et leur position dans le sondage est indifférente. 1, record 4, French, - diagraphie%20de%20relaxation%20neutronique
Record number: 4, Textual support number: 2 CONT
Les diagraphies de relaxation neutroniques TDT ou NLL sont employées pour [...] suivre l'évolution des réservoirs durant la production; évaluer la porosité à travers le tubage; identifier les fluides, eau, gaz, huile. 1, record 4, French, - diagraphie%20de%20relaxation%20neutronique
Record number: 4, Textual support number: 1 OBS
Neutron Lifetime Log : Dénomination d'une diagraphie de neutrons pulsés. 2, record 4, French, - diagraphie%20de%20relaxation%20neutronique
Record 4, Spanish
Record 4, Textual support, Spanish
Record 5 - internal organization data 1977-11-14
Record 5, English
Record 5, Subject field(s)
- Geophysics
Record 5, Main entry term, English
- pulsed-neutron logging
1, record 5, English, pulsed%2Dneutron%20logging
correct
Record 5, Abbreviations, English
Record 5, Synonyms, English
Record 5, Textual support, English
Record number: 5, Textual support number: 1 OBS
Pulsed-neutron logs, which include the thermal-decay-time and neutron lifetime logs, record the rate of decay of thermal neutrons. Chlorine, which is the most common element with high-capture cross-section(...), is found in most formations, and is the principal absorber of thermal neutrons. Consequently, this log determines mainly the amount of chlorine, i. e., the amount of saline water present.(...) 1, record 5, English, - pulsed%2Dneutron%20logging
Record 5, French
Record 5, Domaine(s)
- Géophysique
Record 5, Main entry term, French
- carottage du taux de résorption des neutrons thermiques
1, record 5, French, carottage%20du%20taux%20de%20r%C3%A9sorption%20des%20neutrons%20thermiques
correct
Record 5, Abbreviations, French
Record 5, Synonyms, French
Record 5, Textual support, French
Record number: 5, Textual support number: 1 OBS
Le carottage du taux de résorption des neutrons thermiques [est une méthode de carottage par radioactivité provoquée.] Un générateur de neutrons installé dans une sonde émet des impulsions répétées de particules ayant une énergie moyenne de 14 M.é.V. (...). Après chaque impulsion, les neutrons sont rapidement décélérés jusqu'à vitesse thermique grâce à une série de collisions avec les noyaux des éléments dans les formations géologiques et le trou de forage. (...) cette technique de carottage est utile en prospection pétrolifère pour distinguer les formations riches en hydrocarbures de celles contenant surtout de l'eau salée (...) 2, record 5, French, - carottage%20du%20taux%20de%20r%C3%A9sorption%20des%20neutrons%20thermiques
Record 5, Spanish
Record 5, Textual support, Spanish
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