TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 CONT

The floating drift tube klystron has a single cylindrical chamber containing an electrically isolated central tube. Electrically, this is similar to the two cavity oscillator klystron with a lot of feedback between the two cavities.  2, record 1, English, - floating%2Ddrift%2Dtube%20klystron

Record number: 1, Textual support number: 1 OBS

floating-drift-tube klystron: term officially approved by the Electronics and Telecommunications Terminology Committee.  3, record 1, English, - floating%2Ddrift%2Dtube%20klystron

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 OBS

klystron à tube de glissement flottant : terme uniformisé par le Comité d’uniformisation des termes de l’électronique et des télécommunications (CUTEL).  2, record 1, French, - klystron%20%C3%A0%20tube%20de%20glissement%20flottant

Record 1,  Textual support,  Spanish

Record number: 1, Textual support number: 1 OBS

klistrón: adaptación gráfica propuesta para la voz inglesa "klystron". El plural es klistrones.  2, record 1, Spanish, - klistr%C3%B3n%20de%20tubo%20de%20deslizamiento%20flotante

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 CONT

The frequency stability of a free-running oscillator is determined by the Q of the cavity and the temperature characteristics of the materials used in the design.  1, record 2, English, - free%2Drunning%20oscillator

Record 2,  Textual support,  French

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 CONT

The Centre national d’études spatiales(CNES) is developing an atomic clock of unequaled precision, which will be launched in 2003 aboard the International Space Station(ISS). The PHARAO clock(Cooled Atom In-Orbit Atomic Clock Project)... uses cooled cesium atoms in order to reach an accuracy and stability 10 to 100 times higher than any other high-performance existing calibrating clocks. The Cesium atoms are thrown on a free flight in a cavity enabling interaction with a radio-frequency field. They then transfer their intrinsic accuracy and stability qualities to the piezoelectric oscillator. The lack of gravity increases the time in which the atoms interact with the piezoelectric oscillator, which then increases the resolution and accuracy of the clock by a 10 factor. PHARAO will belong to ESA's ACES(Atomic Clock Ensemble in Space) payload within the frame of one of its ISS program. The ACES mission will be divided in two parts. The first one, which should last six months, will mostly focus on the PHARAO clock performance. The second part of the mission will last 12 months and will allow the international scientific community to use the clock for specific experiments(clocks’ synchronization, General Relativity tests, geodesy, etc.).  2, record 3, English, - ACES%20mission

Record number: 3, Textual support number: 1 OBS

ACES mission: term officially approved by the International Space Station official approval Group (ISSOAG).  3, record 3, English, - ACES%20mission

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 CONT

Les études sur les horloges à atomes froids et leurs implications en physique fondamentale et en métrologie temps/fréquences constituent des thèmes majeurs du Département «SYstèmes de Référence Temps Espace» (SYRTE) de l'Observatoire de Paris (actuellement laboratoire Systèmes de Références Spatio-Temporels) et en particulier du Laboratoire primaire du Temps et des Fréquences créé avec le Bureau National de métrologie. La mission ACES (Atomic Clock Ensemble in Space ) de l'Agence Spatiale Européenne apportera une contribution essentielle dans ces domaines. Parmi les objectifs scientifiques de la mission ACES, figurent la comparaison de fréquence de PHARAO, horloge spatiale à atomes froids, avec un ensemble d'horloges à atomes froids au sol, la détermination de l'exactitude de l'horloge spatiale et la recherche d'une éventuelle dérive de la constante de structure fine. Avec ses trois fontaines à atomes froids de césium et de rubidium, le laboratoire temps/fréquence jouera un rôle clé dans les comparaisons de fréquences.  2, record 3, French, - mission%20ACES

Record number: 3, Textual support number: 1 OBS

mission ACES : terme uniformisé par le Groupe de travail de la terminologie de la Station spatiale internationale (GTTSSI).  3, record 3, French, - mission%20ACES

Record 3,  Textual support,  Spanish

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 CONT

The principle of operation for the active hydrogen maser is based upon a 5 MHz quartz crystal oscillator, phase locked to the hyperfine transition of the hydrogen atom. The atomic hydrogen signal generated within the physics package is then picked up by an antenna in the cavity and coupled to the synchronization unit, which synchronizes the 5 MHz crystal oscillator signal phase to the hydrogen signal phase producing the 5 MHz and 100 MHz spectrally pure sine-wave signal output.  2, record 4, English, - active%20hydrogen%20maser

Record 4,  Textual support,  French

Record number: 4, Textual support number: 1 CONT

L'ON est en train de développer un maser à hydrogène actif pour la mission ACES de l'ESA qui devra être embarqué sur la station spatiale internationale en 2005.  2, record 4, French, - maser%20%C3%A0%20hydrog%C3%A8ne%20actif

Record 4,  Textual support,  Spanish

Record 5,  Textual support,  English

Record number: 5, Textual support number: 1 CONT

A klystron which employs a reflector(repeller) electrode in place of a second resonant cavity to redirect the velocity-modulated electrons through the resonant cavity. The repeller causes one resonant circuit to serve as both input and output, which simplifies the tuning operation. This type of klystron is well adapted for use as an oscillator because the frequency is easily controlled by varying the position of the repeller.  1, record 5, English, - repeller

Record 5,  Textual support,  French

Record 5,  Textual support,  Spanish

Record 6,  Textual support,  English

Record number: 6, Textual support number: 1 CONT

Title: The loss difference in out-of-plane cavity laser gyros.  1, record 6, English, - cavity%20laser%20gyro

Record number: 6, Textual support number: 1 OBS

The... analysis... serves to make the basic point that the conventional electronic feedback oscillator and the cavity laser share the same basic features.  2, record 6, English, - cavity%20laser%20gyro

Record 6,  Textual support,  French

Record number: 6, Textual support number: 1 CONT

[...] signalons l'entrée en service, en 1994, sur avion de transport civil, du gyromètre à fibre optique [...] Son principe de fonctionnement est voisin du gyrolaser à cavité. Un rayon laser, émis par une diode super-luminescente, traverse un coupleur optique où il est divisé en deux faisceaux qui parcourent en sens contraire une fibre optique très fine enroulée sur une bobine. Les deux faisceaux sont recombinés en sortie de bobine, pour créer des franges d'interférence. Une vitesse angulaire autour de l'axe de la bobine provoque un déplacement des franges d'interférence. Ce déplacement est détecté au moyen de cellules photosensibles.  1, record 6, French, - gyrolaser%20%C3%A0%20cavit%C3%A9

Record 6,  Textual support,  Spanish