Abstract
Auger electron appearance potential spectroscopy (AEAPS), which is one of the core level spectroscopies, measures the appearance potential of Auger electrons emitted by core level excitations. In the present paper, AEAPS apparatus consisted of a simple electrode is shown. Spectra of graphite, stainless steel 304 and titanium are shown as examples. AEAPS is found to be more sensitive than soft-X-ray appearance potential spectroscopy (SXAPS). Both spectra contain nearly the same information about the solid surfaces.
