Electron capture ionization

Electron capture ionization is the ionization of a gas phase atom or molecule by attachment of an electron to create an ion of the form . The reaction is

where the M over the arrow denotes that to conserve energy and momentum a third body is required (the molecularity of the reaction is three).

Electron capture can be used in conjunction with chemical ionization.[1]

  1. ^ Donald F. Hunt; Frank W. Crow (1978), "Electron capture negative ion chemical ionization mass spectrometry", Analytical Chemistry, 50 (13): 1781, doi:10.1021/ac50035a017
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