What Does PESIS Stand For?

PESIS stands for Photoelectron Spectroscopy Of The Inner Shell

PESIS, or Photoelectron Spectroscopy Of The Inner Shell, is an advanced analytical technique used to investigate the electronic structure of atoms and molecules. By measuring the kinetic energy of electrons ejected from the inner electron shells upon exposure to high-energy photons, PESIS provides detailed information about the binding energies and chemical environments of core electrons. This method is essential in materials science, chemistry, and surface analysis for understanding fundamental properties at the atomic level.