![X-ray absorption spectroscopy](/sites/default/files/styles/thumbnail/public/hero-images/2018-06-28_Synchrotron_0192.jpg?itok=12oFisCa)
X-ray absorption spectroscopy
X-ray absorption spectroscopy (XAS) is a versatile tool for chemistry, biology, and materials science. By probing how x rays are absorbed from core electrons of atoms in a sample, the technique can reveal the local structure around selected atoms.