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.
depends on experiment - please discuss with Instrument Scientist
|Temperature range||10 K-475K|
|Pressure range||10-8 mbar|
|Detector||IRD diode, CCD, APD|
|Sample holder compatibility||--|
|Magnetic Field||Electromagnet: 7 KOe (for transmission), 3 KOe (for reflectivity), 1.1KOe (for fluorescence)|
|Applicable at beamline(s)|
|PM3||20 - 1900 eV|
|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|
"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.