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PRECESSION LARMOR [2 records]

Record 1 1989-01-15

English

Subject field(s)
  • Atomic Physics
DEF

The precessional motion of the orbit of a charged particle which is subjected to a magnetic field.

French

Domaine(s)
  • Physique atomique
DEF

Modification apportée à l'état quantique d'un système atomique ou moléculaire sous l'effet d'un champ magnétique.

OBS

[L']interaction (entre le champ et le moment magnétique des électrons de l'atome] peut être décrite comme une précession du moment magnétique moyen de l'atome autour de la direction du champ magnétique appliqué.

Spanish

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Record 2 1986-12-15

English

Subject field(s)
  • Nuclear Medicine
OBS

According to a theorem of Larmor ... the magnetization M precesses around the field in such a way that [its magnitude] is constant. M describes a cone with a constant angle ...; M and thus its projection on the transverse (x,y) plane precess around the magnetic field with the so-called Larmor frequency. ...

French

Domaine(s)
  • Médecine nucléaire
CONT

Au repos, la toupie et donc l'aiguille aimantée, se trouvent alignées avec le champ B (zéro en indice inférieur). Si nous écartons l'axe de la toupie de celui (de ce champ), la toupie entame autour de l'axe (de ce champ) un mouvement de rotation, appelé précession de Larmor (B).

Spanish

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