EVISA Contact EVISA | Sitemap | Home   
 Advanced search
The establishment of EVISA is funded by the EU through the Fifth Framework Programme (G7RT- CT- 2002- 05112).

Supporters of EVISA includes:


appearance energy

The appearance energy (or appearance potential) is the lowest energy which must be imparted to the parent molecule to cause it to produce a particular specified ion. This energy, usually stated in electron volts, may be imparted by electron impact, by photon impact, or in other ways.
(Note: It is recommended that the term 'appearance energy' should replace the term 'appearance potential' and that the energy should be stated in SI units.)

Source: IUPAC


Imprint     Disclaimer

© 2003 - 2024 by European Virtual Institute for Speciation Analysis ( EVISA )