TERMIUM Plus^®

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A measure of the time taken for spinning protons to lose phase coherence among the nuclei spinning perpendicular to the main field due to interaction between spins, resulting in a reduction in the transverse magnetization.  4, fiche 1, Anglais, - T2%20relaxation%20time

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[T2 is a] tissue-specific time constant ...  5, fiche 1, Anglais, - T2%20relaxation%20time

Fiche 1,  Justifications,  Français

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[...] constante de temps propre à chaque tissu, caractérisant la relaxation transversale des protons de ce tissu, placés dans un champ magnétique uniforme [...] après qu'ils aient été excités par une impulsion électromagnétique de fréquence appropriée (fréquence de Larmor).  1, fiche 1, Français, - temps%20de%20relaxation%20T2

Fiche 1,  Justifications,  Espagnol

Fiche 2,  Justifications,  Anglais

Record number: 2, Textual support number: 1 CONT

Magneto-optics is the study of effects arising from the interaction of light with magnetized media. Initially linearly polarized light, after interaction with such materials, can exhibit both ellipticity and a rotation of the polarization state. These effects are generally categorized into two phenomena, the Faraday Effect which occurs when electro-magnetic radiation is transmitted through a magnetized media, and the Kerr Effect which deals with reflections from the magnetized media. The Magneto-Optical Kerr Effect(MOKE) is further categorized by the direction of the magnetization vector with respect to the reflection surface and the plane of incidence... If the magnetization vector is perpendicular to the reflection surface and parallel to the plane of incidence, the effect is called the polar Kerr effect. As a matter of simplification, near normal incidence is usually employed when doing experiments in the polar geometry. In the longitudinal effect the magnetization vector is parallel to both the reflection surface and the plane of incidence. When the magnetization is perpendicular to the plane of incidence and parallel to the surface it is said to be in the transverse configuration.  2, fiche 2, Anglais, - Magneto%2DOptical%20Kerr%20Effect

Fiche 2,  Justifications,  Français

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L'effet Kerr magnéto-optique (MOKE) : selon la configuration géométrique, l'effet Kerr est dit polaire, longitudinal ou transverse (figure 1). M est le vecteur aimantation et le plan d'incidence est déterminé par les faisceaux incident et réfléchi (et comprend aussi la normale à la surface étudiée).  1, fiche 2, Français, - effet%20Kerr%20magn%C3%A9to%2Doptique

Fiche 2,  Justifications,  Espagnol

Fiche 3,  Justifications,  Anglais

Record number: 3, Textual support number: 1 CONT

Magneto-optic Kerr effect(MOKE) is one of the magneto-optic effects. It describes changes of the reflections from the magnetized media. It is similar to the Faraday effect that describes the light passing through the media. The light that is reflected from a magnetized surface, changes in polarization. MOKE can be further categorized by the direction of the magnetization vector with respect to the reflection surface and the plane of incidence. When the magnetization vector is perpendicular to the reflection surface and parallel to the plane of incidence, the effect is called the polar Kerr effect.  2, fiche 3, Anglais, - polar%20Kerr%20effect

Fiche 3,  Justifications,  Français

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L'effet KERR résulte de l'interaction entre une onde électromagnétique polarisée linéairement et un milieu aimanté. L'onde réfléchie est alors polarisée elliptiquement [...] Dans notre expérience, nous pouvons effectuer les expériences dans deux géométries :effet kerr longitudinal et effet Kerr polaire [...]  2, fiche 3, Français, - effet%20Kerr%20polaire

Fiche 3,  Justifications,  Espagnol