Extreme ultraviolet radiation (EUV or XUV) is high-energy ultraviolet radiation, generally defined to be electromagnetic radiation in the part of the electromagnetic spectrum spanning wavelengths from 124 nm down to 10 nm, and therefore (by the Planck–Einstein equation) having photons with energies from 10 eV up to 124 eV (corresponding to 124 nm to 10 nm respectively). EUV is naturally generated by the solar corona and artificially by plasma and synchrotron light sources.
Its main uses are photoelectron spectroscopy, solar imaging, and lithography.
In air, EUV is the most highly absorbed component of the electromagnetic spectrum, requiring high vacuum for transmission.
Read more about Extreme Ultraviolet: EUV Generation, EUV Absorption in Matter, EUV Damage
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