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POROUS BARRIER [1 record]

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Record 1 2011-12-22

English

Subject field(s)
  • Analytical Chemistry
  • Electromagnetic Radiation
CONT

gaseous diffusion: A method of isotopic separation based on the fact that gas atoms of molecules with different masses will diffuse through a porous barrier (or membrane) at different rates, according to their weight.

French

Domaine(s)
  • Chimie analytique
  • Rayonnements électromagnétiques
CONT

Le procédé de séparation par diffusion gazeuse à travers une barrière poreuse est fondé sur le phénomène de diffusion moléculaire isotherme […] Les barrières poreuses comportent un grand nombre de pores en parallèle, en pratique de l’ordre de cent milliards de pores par centimètre carré.

OBS

Les matériaux poreux proposés pour les barrières sont peu nombreux : nickel fritté, alumine frittée ou alumine anodique. Les barrières industrielles américaines ont la forme de tubes de nickel fritté assemblés en faisceaux dans des diffuseurs cylindriques.

Spanish

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