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, Anomalous Scattering, Coherent Scattering, Elastic Scattering, Magnetic Scattering, Reflectivity, REXS, SAXS, WAXS, NEXAFS, XMCD, XMLD, Reflectometry
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.