ALICE

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

XMCD, NEXAFS, EXAFS, XPS

Remote access

depends on experiment - please discuss with Instrument Scientist

Station data
Temperature range 10 K-475K
Pressure range --
Detector IRD diode, CCD, APD
Manipulators --
Sample holder compatibility --
Additional equipment
Magnetic Field Electromagnet: 7 KOe (for transmission), 3 KOe (for reflectivity), 1.1KOe (for fluorescence)
Assigned to beamline(s)
UE112_PGM-1 8 - 690 eV; for extreme values (<50 eV or >400 eV) contact the beamline crew
UE52_SGM 100 - 1500 eV
U49-2_PGM-1 85 - 1600 eV
PM3 20 - 1900 eV

"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 contact the station manager.