X-ray Absorption Spectroscopy (XAS) is a powerful analytical technique ... oxide supports, and single-atom catalysts. XAS can identify the active sites, monitor the oxidation state and coordination ...

For the first time since X-rays were discovered in 1895, researchers have successfully performed X-ray spectroscopy to identify the element of a single atom at a time. The achievement takes ...

it is quite evident that for the eventual discovery of any unknown element X-ray spectroscopy, especially as it has been developed by Siegbahn, represents the most effective method.

For the first time, researchers have been able to measure the quantum state of electrons ejected from atoms that have ...

The process begins with the absorption of X-ray photons by atoms in the material, leading to the ejection of photoelectrons. By analyzing the energy spectrum of these photoelectrons, information about ...

The Helsinki Center for X-ray Spectroscopy is a unique research and education infrastructure serving users from both academia and industry in their leading-edge research, development and innovation.

X-ray Photoelectron Spectroscopy (XPS)is a highly sensitive technique for identifying and quantifying the chemical states of elements on the outermost surface of a solid. It is especially useful for ...