In electron spectroscopy, depending on the technique, irradiating the sample with high-energy particles such as X-ray photons, electron beam electrons, or ultraviolet radiation photons, causes Auger electrons and photoelectrons to be emitted. Figure 1 illustrates this on the basis of a single particle in which, for example, the incoming X-ray photon from a particular energy range (E=hν) transfers its energy to an electron in the inner shell of an atom.
In electron spectroscopy, when exposed to high-energy particles like X-rays or electrons, atoms emit Auger electrons and photoelectrons. Figure 1 illustrates this process using a single particle as an example, where an incoming X-ray photon transfers its energy to an inner shell electron.