Photoelectron Spectroscopy

**Definition:** The study of the energy of electrons ejected from matter by the photoelectric effect, i.e., as a direct result of absorption of energy from electromagnetic radiation. As the energies of the electrons are characteristic of a specific element, the measurement of the energy of these electrons is a technique used to determine the chemical composition of surfaces.

**Tree numbers:** - E05.196.867.618

**Synonyms:** - Photoelectron Emission Spectroscopy - Photoemission Spectroscopy