All Flashcards
Differentiate between binding energy and kinetic energy in PES.
Binding Energy: Energy required to remove an electron. Kinetic Energy: Energy of the ejected electron after removal.
What are the three main steps of Photoelectron Spectroscopy (PES)?
- Shine light on a sample. 2. Electrons are ejected if the light has enough energy. 3. Measure the kinetic energy of the ejected electrons.
What is a photon?
A tiny packet of energy of light.
Define threshold frequency.
The minimum frequency of light required to eject electrons from a metal surface.
What is binding energy in PES?
The energy required to remove an electron from an atom or molecule.
Define frequency ().
The number of waves passing a point per second; higher frequency equals higher energy.
What is Photoelectron Spectroscopy (PES)?
A technique that uses the photoelectric effect to analyze electron energies in atoms, ions, and molecules.