JRP CALL information
Supported By

European Commission

PSI, Paul Scherrer Institut, Villigen, Switzerland

The Paul Scherrer Institute is with 1400 employees the largest research centre for the natural and engineering sciences in Switzerland and a leading user laboratory. Its research activities are concentrated on the main topics structure of matter, energy and environmental research as well as human health.

Based on the initiative and under the direction of the Laboratory for Waste Management (Department of Nuclear Energy and Safety, Paul Scherrer Institute), a high resolution hard X-ray microprobe station was built at the Swiss Light Source: the microXAS beamline. This analytical facility allows for the investigation of materials and matter by means of high intensity X-ray beams with a spatial resolution of approximately 1µm2. Without doubt, the capability to determine element-specific chemical properties such as local coordination environments or oxidation states by means of X-ray absorption spectroscopy is of fundamental importance. Using micro-focused X-ray beams, chemical speciation can be determined within single micro-domains simultaneously with local structural analysis. In particular the licence to investigation of radioactive materials makes the microXAS beamline into an exclusive x-ray microprobe facility.

The microXAS beamline at the Swiss Light Source (SLS) is a microprobe facility optimized for X-ray absorption spectroscopy (XAS), X-ray fluorescence (XRF) and X-ray diffraction (XRD) experiments requiring high spatial resolution. It is designed for monochromatic and pink X-ray beams (~4-23 keV) with high flux and energy resolution combined with dynamic (sub-)micron focusing capabilities. The focal spot size can be adjusted to the problem investigated ranging from a few mm2 down to 1µm2. A minigap in-vacuum undulator (U19) provides high-brightness X-rays in the energy range of ~4 - ~23 keV. This energy range covers most K- respectively L-edges of transition metals, lanthanides and actinides. Regarding beamline optics, a two-step focusing strategy is employed. By doing so, the following advantages result: maximized energy resolution, dynamic focusing, and optimized acceptance.

 

For information about access requirements, please click here.

 

Aerial view of the SLS

The SIMS

Radioactive x-ray microprobe endstation

Inside the SLS

 

Accommodation

The PSI Guesthouse provides on-site accommodation to visitors.

 

More information

http://sls.web.psi.ch/view.php/beamlines/mxas/

 

Contact person

Daniel GROLIMUND

The Paul Scherrer Institute is with 1400 employees the largest research centre for the natural and engineering sciences in Switzerland and a leading user laboratory. Its research activities are concentrated on the main topics structure of matter, energy and environmental research as well as human health.