Radiometry with Synchrotron Radiation

Department 7.1

Tasks

Application of synchrotron radiation in the THz, IR, UV, EUV, VUV, and soft X-ray spectral range at the electron storage rings Metrology Light Source (MLS) and BESSY II for basic and applied metrological tasks:

Realisation of spectral responsivity scales in the UV, VUV, EUV, and soft X-ray ranges by means of cryogenic radiometers as primary detector standards
Calibration of radiation sources and detectors from the UV to soft X-rays
Photon diagnostics and materials research at X-ray lasers
Characterisation of space instrumentation
Reflectometry on optical components and materials from the UV to X-rays, in particular for EUV lithography
Investigation of nanolayers and nanostructure applying scattering techniques, soft X-ray reflectometry and IR-nearfield microscopy
Quantitative characterization of surfaces and thin layers applying VUV ellipsometry, electron spectroscopy and IR-spectrometry

News

Investigations at the PTB four-crystal monochromator beamline at BESSY II enable the direct observation of adsorption processes

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High-energy density batteries play a crucial role for renewables, both as stationary storage system as well as for electric automotive applications. Every battery suffers under degradation effects leading to capacity and lifetime reduction. The understanding of the aging mechanism is mandatory for further cell improvement.

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In scanning probe microscopy (SPM) images of surfaces are created by moving a tip across the surface. Research in SPM aims to find suitable tips and physical interaction mechanisms which uncover specific surface properties. An important and proven method for mapping the magnetic order of ferromagnetic surfaces is magnetic force microscopy based on the magnetic dipole interaction ...

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