FinEstBeAMS is a materials and atmospheric science beamline at the MAX IV 1.5 GeV storage ring. It provides ultraviolet and soft X-ray radiation with precisely controlled and widely variable parameters. The beamline has two branches: one branch is dedicated to ultra-high vacuum studies of surfaces and interfaces and the other to gas-phase experiments and photoluminescence in solids. The range of research extends from the electronic structure studies of free particles (atoms, molecules, clusters and atmospheric particles) in gas phase and on surfaces to formation analysis and nanoscale characterisation of surfaces and interfaces. The design of the beamline facilitates sample transfer between the end stations, offering synergy between gas phase and solid-state research.
An Estonian and Finnish consortium, supported by the EU through the European Regional Development Fund and the Academy of Finland, has provided funding for the construction of the beamline, instrumentation and staff.
|Available for||Technique description|
|General Users||High-resolution photoelectron and Auger electron spectroscopy of gaseous samples. (GPES)|
|General Users||Ion time-of-flight mass spectrometry of gaseous samples. (GPES)|
|General Users||X-Ray Absorption of gaseous samples, measured in the Total Ion Yield mode. (GPES)|
|General Users||Photoluminescence spectroscopy of solid samples in the wavelength range 1.4um-200 nm. (PLES)|
|General Users||Measurement of Photoluminescence excitation functions at fixed emission wavelengths as well as reflection spectra from polished surfaces of solid samples. (PLES)|
|General Users||Temperature dependencies of luminescence properties of solid materials in the temperature range from 10 K up to 350 K. (PLES)|
|General Users||Photoelectron-Photoion Coincidence (PEPICO) spectroscopy of gaseous samples. (GPES)|
|Commissioning experts||X-ray photoelectron spectroscopy of surfaces and interfaces in the UHV. (SSES)|
|Commissioning experts||Angle-resolved photoelectron spectroscopy of 2D materials and condensed matter physics. (SSES)|
The available photon energy range is 4.5-1300 eV using horizontally linear polarized radiation and 21-630 eV using vertically linear polarized radiation. However, the upper energy limit depends on the photon flux requirements of a given experiment.
GPES = Gas-phase end station
PLES = Photoluminescence end station
SSES = Solid-state end station
MAX IV helps open the way to new studies on cross-luminescence
Thanks to new technological advancements, materials with cross-luminescence are getting new attention after a long period of reduced research activity. Users at FinEstBeAMS from University of Tartu work at gaining new knowledge on cross-luminescent compounds. Scintillators are compounds capable of emitting light when excited by an ionizing radiation, such as X- and gamma-rays or high