TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

AMERICIO [1 record]

Record 1 2010-06-07

English

Subject field(s)
  • Chemical Elements and Compounds
  • Nuclear Physics
Universal entry(ies)
DEF

A radioactive metallic element produced by bombardment of plutonium with high-energy neutrons.

DEF

A synthetic radioactive element of atomic number 95, a member of the actinide series.

OBS

Atomic weight 241; 14 isotopes of widely varying half-life. ... Derivation: Multiple neutron capture in plutonium in nuclear reactor, plutonium isotopes yield Am 241 and Am 243 on beta decay. ... Hazard: A radioactive poison. Use: Gamma radiography, radiochemical research, diagnostic aid, electronic devices.

French

Domaine(s)
  • Éléments et composés chimiques
  • Physique nucléaire
Entrée(s) universelle(s)
DEF

Nom donné à l'élément chimique de numéro atomique 95, qui suit le plutonium dans la série des corps transuraniens.

CONT

L'américium, qui n'existe pas dans la nature, a été obtenu en 1945 par G. T. Seaborg et ses collaborateurs par bombardement de l'uranium au moyen de particules alpha. [...] L'américium est l'un des principaux déchets nucléaires.

Spanish

Campo(s) temático(s)
  • Elementos y compuestos químicos
  • Física nuclear
Entrada(s) universal(es)
DEF

Elemento químico artificial, radiactivo, de símbolo Am, número atómico 95, masa atómica del isótopo menos inestable 243 y configuración electrónica (Rn) 5f76s2, con 13 nucleidos, ninguno estable. Forma cristales metálicos de estructura compacta compleja, cúbica centrada en las caras y compacta mixta. Pertenece a la serie de los actínidos.

OBS

[El americio] es un transuránico, inexistente en la naturaleza, que se obtiene artificialmente bombardeando el uranio con partículas alfa para transmutarlo en plutonio 241. Éste, que es inestable, emite espontáneamente una partícula beta y se convierte en americio.

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