The instrument was built as a diffractometer/reflectometer for XRMS applications and is in operation since December 2002, now in its second iteration - ALICE II. 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. Although the intrument designed for the analysis of magnetic hetero- and nanostructures via resonant magnetic x-ray scattering, it 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 0362 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 ALCIE II chamber is hosted at the PM3 dipole beamline, which merges the developments of the former BESSY I SX700 III monochromator for elliptically polarized VUV radiation and of BESSY II collimated plane grating monochromators. This way it is possible to achieve circular polarization from a BESSY II dipole in the range 20 – 2000 eV with high photon flux, high energy resolution and high stability.
X-ray Holography, Anomalous Scattering, Coherent Scattering, Elastic Scattering, Magnetic Scattering, Reflectivity, REXS, SAXS, WAXS, XMCD, XMLD, NEXAFS, Reflectometry, XEOL
depends on experiment - please discuss with Instrument Scientist