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europium oxide [1 record]

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Record 1 2010-10-19

English

Subject field(s)
  • Chemical Elements and Compounds
  • Geochemistry
  • Nuclear Fission Reactors
Universal entry(ies)
Eu2O3
formula, see observation
DEF

Pale rose powder ... insoluble in water, but soluble in acid to give the corresponding salt, [used for] nuclear reactor control rods, especially in red- and infrared-sensitive phosphors.

OBS

Chemical formula: Eu2O3

French

Domaine(s)
  • Éléments et composés chimiques
  • Géochimie
  • Réacteurs nucléaires de fission
Entrée(s) universelle(s)
Eu2O3
formula, see observation
CONT

À partir de la solution de chlorures de terres rares, après extraction par solvant, à l'aide d'acide di(2-éthylhexyl) phosphorique (HDEHP ou D2 EHPA ou DEPA), l'oxyde d'europium très pur est obtenu.

CONT

Le noyau actif d'une source de rayons gamma est constitué par une douille de cobalt et un oxyde d'europium logé à l'intérieur de la douille, la teneur en europium étant de 10 à 90 % en masse [...]

OBS

Formule chimique : Eu2O3

Spanish

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