Quantum Mechanics of XPS   Quantum mechanical treatment When a photoemission event takes place, the following energy conservation rule holds: {\displaystyle h\nu =|E_{b}^{v}|+E_{kin}} where {\displaystyle h\nu } is the photon energy, {\displaystyle |E_{b}^{v}|} is the electron BE (with respect to the vacuum level) prior to ionization, and {\displaystyle E_{kin}} is the kinetic energy of the photoelectron. If reference is taken with […]