TERMIUM Plus^®

Fiche 1,  Justifications,  Français

Fiche 1,  Justifications,  Espagnol

Fiche 2,  Justifications,  Anglais

Record number: 2, Textual support number: 1 DEF

A phenomenon observed in the scattering of light as it passes through a transparent medium; the light undergoes a change in frequency and a random alteration in phase due to a change in rotational or vibrational energy of the scattering molecules.  3, fiche 2, Anglais, - Raman%20scattering

Record number: 2, Textual support number: 1 OBS

Raman scattering: term officially approved by the Radarsat-2 Terminology Approval Group (RTAG).  4, fiche 2, Anglais, - Raman%20scattering

Fiche 2,  Justifications,  Français

Record number: 2, Textual support number: 1 DEF

Changement de longueur d'onde d'un rayonnement par diffusion dans un solide, un liquide ou un gaz.  3, fiche 2, Français, - diffusion%20Raman

Record number: 2, Textual support number: 1 OBS

La diffusion répartit l'énergie de l'onde incidente dans toutes les directions sans relation de phase bien définie entre les ondes diffusées dans les différentes directions.  4, fiche 2, Français, - diffusion%20Raman

Record number: 2, Textual support number: 2 OBS

diffusion Raman : terme uniformisé par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).  5, fiche 2, Français, - diffusion%20Raman

Fiche 2,  Justifications,  Espagnol

Fiche 3,  Justifications,  Anglais

Record number: 3, Textual support number: 1 CONT

Stimulated Raman effect. The mechanism of the stimulated Raman effect depends on the coherent pumping of the molecules of the sample into an excited vibrational plate by the powerful electric field of the laser beam. ... In addition to its high intensity and its coherence, there are other new features of stimulated Raman scattering. ... the stimulated Raman effect usually contains only one frequency. ... which is the laser frequency minus exactly twice the frequency of vibrational mode that is being scattered. ... Another striking and unusual effect in stimulated Raman scattering is the excitation of intense anti-Stokes radiation.  1, fiche 3, Anglais, - stimulated%20Raman%20effect

Fiche 3,  Justifications,  Français

Record number: 3, Textual support number: 1 CONT

Effets raman non linéaires. (...) Effet hyper Raman, effet Raman stimulé, effet Raman inverse.  1, fiche 3, Français, - effet%20Raman%20stimul%C3%A9

Fiche 3,  Justifications,  Espagnol

Fiche 4,  Justifications,  Anglais

Record number: 4, Textual support number: 1 CONT

When the exciting radiation falls within the frequency range of a molecule's absorption band in the visible or ultra-violet spectrum the radiation may be scattered by two different processes, resonance fluorescence or the resonance Raman effect. Both these processes give much more intense scattering than the normal nonresonant Raman effect. ...The absolute frequencies of the resonance Raman effect ... shift by exactly the amount of any shift in the exciting frequency, just as do those of the normal Raman effect. Thus the main characteristic of the resonance as compared to the normal Raman effect is its intensity, which may be greater by two or three orders of magnitude.  1, fiche 4, Anglais, - resonance%20Raman%20effect

Fiche 4,  Justifications,  Français

Record number: 4, Textual support number: 1 CONT

Effet Raman de résonance. La diffusion Raman de résonance est un cas particulier de l'effet Raman qui intervient lorsque la longueur d'onde de la radiation excitatrice est voisine de celle d'une transition électronique de la molécule étudiée. [...] La diffusion Raman de résonance est principalement caractérisée par l'exaltation très importante des intensités jusqu'à un facteur 10⁶ de certains pics correspondant aux vibrations du chromophose, c'est-à-dire la partie de la molécule qui est impliquée dans la transition électronique.  1, fiche 4, Français, - effet%20Raman%20de%20r%C3%A9sonance

Fiche 4,  Justifications,  Espagnol