materjalide uurimismeetod, mis põhineb valguse (nähtav, ultraviolett) või röntgenkiirguse toimel materjalist väljuvate elektronide energia analüüsil
a technique for determining concentration and distribution of chemical elements over a macroscopic area of a specimen; it is enabled studying the energy of photoelectrons emitted from a material during irradiation by visible or ultraviolet light or X-rays, in order to analyse the properties of surfaces, interfaces and bulk materials
