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.

Techniques

Available forTechnique description
General UsersHigh-resolution photoelectron and Auger electron spectroscopy of gaseous samples. (GPES)
General UsersIon time-of-flight mass spectrometry of gaseous samples. (GPES)
General UsersX-Ray Absorption of gaseous samples, measured in the Total Ion Yield mode. (GPES)
General UsersPhotoluminescence spectroscopy of solid samples in the wavelength range 1.4um-200 nm. (PLES)
General UsersMeasurement of Photoluminescence excitation functions at fixed emission wavelengths as well as reflection spectra from polished surfaces of solid samples. (PLES)
General UsersTemperature dependencies of luminescence properties of solid materials in the temperature range from 10 K up to 350 K. (PLES)
General UsersPhotoelectron-Photoion Coincidence (PEPICO) spectroscopy of gaseous samples. (GPES)
Commissioning expertsX-ray photoelectron spectroscopy of surfaces and interfaces in the UHV. (SSES)
Commissioning expertsAngle-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

2020-06-15

First three studies from the photoluminescence endstation at FinEstBeAMS

With its three endstations, FinEstBeAMS is becoming one of MAX IV most prolific beamlines. Recently, three new articles on scintillators are the first studies to be produced using FinEstBeAMS’s photoluminescence endstation. FinEstBeAMS, the Finnish-Estonian beamline at MAX IV’s 1.5 GeV storage ring, offers research opportunities in the fields of atmospheric and material science. Recently no