in photoelectron and Auger spectra
The displacement of photoelectron or Auger peak energies originating from changes
in electron binding energies as a consequence of differences in the chemical environment
of the atoms.
PAC, 1979, 51, 2243
(General aspects of trace analytical methods - IV. Recommendations for nomenclature,
standard procedures and reporting of experimental data for surface analysis techniques)
on page 2247