The minimum energy that must be imparted to an atom or molecule to produce a specified ion. The term appearance potential 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.|
Orange Book Entry
The minimum energy that must be imparted to an atom, molecule, radical or other molecular entities to produce a specified ion. The term 'appearance potential' is not recommended.