TERMIUM Plus®

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ELECTRON IMPACT IONISATION [1 record]

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Record 1 2025-05-12

English

Subject field(s)
  • Physics
  • Analytical Chemistry
CONT

The basic form of ionization in mass spectrometry is electron ionization (EI), where an electron beam ... collides with the molecules of the sample to transform them into positively charged ions.

French

Domaine(s)
  • Physique
  • Chimie analytique
CONT

Le principe de l'ionisation électronique consiste à accélérer des électrons émis par un filament chauffé. Ceux-ci rentrent en collision avec les molécules. Si l'énergie cinétique fournie aux électrons est importante, quelques dizaines d'eV [électronvolts], alors un électron est arraché à la molécule au cours de la collision et un ion positif est formé.

Spanish

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© Public Services and Procurement Canada, 2025
TERMIUM Plus®, the Government of Canada's terminology and linguistic data bank
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