![Soft x-ray spectroscopy](/sites/default/files/styles/thumbnail/public/hero-images/2018-06-28_Synchrotron_0044.jpg?itok=htxAFErz)
Soft x-ray spectroscopy
Soft x-rays are generally understood to be x-rays in the energy range 100-3,000 eV. They have insufficient energy to penetrate the beryllium window of a hard x-ray beamline but have energies higher than that of extreme ultraviolet light.