excitation energy

in in situ microanalysis
symbol: $E_{0}$; units: $\pu{keV}$, $\pu{eV}$
synonyms: initial energy, acceleration energy
https://doi.org/10.1351/goldbook.E02251
Kinetic energy of bombarding particles at the surface of the solid.
Source:
PAC, 1983, 55, 2023. (Nomenclature, symbols and units recommended for in situ microanalysis (Provisional)) on page 2027 [Terms] [Paper]