FinEstBeAMS at the MAX IV 1.5 GeV storage ring is a material- and atmospheric science beamline dedicated to provide high quality radiation with precisely controlled and widely variable parameters for a broad range of research. Studies at FinEstBeAMS range from the electronic structure of free atoms, molecules, clusters and atmospheric particles in a gas phase and on surfaces, to formation analysis and nanoscale characterisation of surface interfaces. The design aims to provide a two-branch beamline – one for ultra-high vacuum (UHV) surfaces and interface studies, and the other for high-pressure volatile materials experiments and photoluminescence studies. Furthermore, the design of the beamline facilitates sample transfers between two endstations, thereby providing a degree of synergy between the gas phase and solid state research.

Funding for the basic equipment and instrumentation, materials, and staff during the construction phase was provided by an Estonian and Finnish consortium, supported by the EU through the European Regional Development Fund and the Academy of Finland.

Techniques X-ray Photoelectron Spectroscopy (XPS), X-ray Absorption Spectroscopy (XAS), Photoelectron Photoion Coincidence Spectroscopy (PEPICO), Time-of Flight Mass Spectroscopy (TOF), Photoluminescence Spectroscopy (PS)
Beam Size 0.1 (V) x 0.1 (H) mm, best: 0.02 (V) x 0.1 (H) mm, possible to use defocused beam
Energy Range 4.3 - 1000 eV (288 - 1.24 nm), 1486 eV (0.83 nm) reachable when EPU is used as wiggler
Time Scales nanoseconds to seconds
Samples Atomis, Molecules, Clusters, Gases, Liquids, Atmospheric particles, Nanoparticles, Solids


Acid-base equilibria: not exactly like you remember in chemistry class

Work published in the Royal Society of Chemistry with the support of the Helmholtz Association through the Center for Free-Electron Laser Science at DESY. MAX IV Laboratory, Lund University, Sweden,  European Research Council (ERC) under the European Union’s Horizon 2020 and the Academy of Finland.   Remember doing titrations in chemistry class? Adding acid drop-by-drop