Appearance energy

Appearance energy (also known as appearance potential) is the minimum energy that must be supplied to a gas phase atom or molecule in order to produce an ion. In mass spectrometry, it is accounted as the voltage to correspond for electron ionization. [1] This is the minimum electron energy that produces an ion.[2] In photoionization it is the minimum photon energy.

See also

References

  1. ↑ IUPAC, Compendium of Chemical Terminology, 2nd ed. (the "Gold Book") (1997). Online corrected version:  (2006–) "Appearance energy".
  2. ↑ Kerwin, Larkin; Marmet, Paul (1960), "Recent Appearance Potential Measurements Using an Electrostatic Electron Selector", Journal of Applied Physics, 31 (12): 2071, Bibcode:1960JAP....31.2071K, doi:10.1063/1.1735504
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