ALICE II

Upgraded diffractometer/reflectometer for resonant magnetic x-ray scattering applications

The ALICE chamber was built as a diffractometer/reflectometer for XRMS applications and is in operation since December 2002. It combines a two-circle goniometer with an accessible range of 175° in 2θ. A magnetic field of ±7.1 kOe is available with a yoke that can rotate freely within the horizontal scattering plane. The whole chamber is mounted on a support frame and can thus be moved to various places (undulator or dipole beamlines) within the experimental hall, depending on the requirements of the experiment and beamtime allocation.

Methods

X-ray Holography, Coherent Scattering, Magnetic Scattering, Reflectivity, SAXS, Time-resolved scattering, NEXAFS, XMCD, XMLD

Remote access

depends on experiment - please discuss with Instrument Scientist

Beamline data
Energy range 20 - 1900 eV
Energy resolution 32000 at 64 eV
Flux 1e9 - 1e10
Polarisation • horizontal
• circular
Focus size (hor. x vert.) 180 µm hor., vert. depends on exit slit
Phone 0049 30 8062 13429
More details PM3
Station data
Temperature range 10 - 475 K
Pressure range 10-8 mbar
Detector IRD diode, CCD, APD
Manipulators motorized XYZ
Sample holder compatibility
Additional equipment
Magnetic field Electromagnet: 7 KOe (for transmission), 3 KOe (for reflectivity), 1.1KOe (for fluorescence)

"Although the chamber named ALICE was designed for the analysis of magnetic hetero- and nanostructures via resonant magnetic x-ray scattering, the instrument is not limited to this technique. Static measurements involve the possibility to use scattering and spectroscopy synchrotron based techniques (photon-in photon-out, photon-in electron-out, and coherent scattering). Dynamic experiments require either laser or magnetic field pulses to excite the spin system followed by x-ray probe in the time domain from nano- to femtosecond delay times. In this temporal range, the demagnetization/remagnetization dynamics and magnetization precession in a number of magnetic materials (metals, alloys, and magnetic multilayers) can be probed in an element specific manner. The versatility of the instrument was tested by a series of pilot experiments, pointing out ALICE as one of the most demanded instruments at the Helmholtz-Zentrum in Berlin." http://dx.doi.org/10.17815/jlsrf-2-83

For more details and current status of the experimental station please contact the Instrument Scientist.