SOLVED:A technique called photoelectron spectroscopy is used to measure the ionization energy of atoms. A sample is irradiated with UV light, and electrons are ejected from the valence shell. The kinetic energies of the ejected electrons are measured. Because the energy of the UV photon and the kinetic energy of the ejected electron are known, we can write h v=I E (1)/(2) m u^2 where v is the frequency of the UV light, and m and u are the mass and velocity of the electron, respectively. In one e

Astronomical spectroscopy - Alchetron, the free social encyclopedia

Basic Principles of Spectroscopy

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