Obtaining Soft X-ray Emission and Absorption Spectra Using SR from the VEPP-4 Storage Ring on the Metrology Station “Cosmos”

Abstract The experimental equipment of the metrology station “Cosmos” was adjusted for obtaining soft X-ray emission (XES) and absorption (XANES) spectra of reference samples. In the present work were used two different optical schemes: flat (Bragg-scheme) and cylindrically bent crystals (Johann scheme). Experimental XES and XANES spectra were compared with the spectra obtained on a laboratory X-ray spectrometer and the results of the quantum-chemical calculations.