Electron ionization
From Mass Spec Terms
| DRAFT DEFINITION |
| Electron ionization |
|---|
|
The ionization of an atom or molecule by electrons that are typically accelerated to energies between 50 and 150 eV. Usually 70 eV electrons are used to produce positive ions. The term 'electron impact' is not recommended. |
| Considered between 2004 and 2006 but not included in the 2006 PAC submission |
| This is an unofficial draft definition presented for information and comment. |
Gold Book Entry
This is the term used to describe ionization of any species by electrons. The process may, for example, be written:
for atoms or molecules:
M + e --> M+. + 2e
for radicals:
M. + e --> M+ + 2e
The term 'electron impact' should not be used.
