Purpose
The main advantage of combining Brillouin spectroscopy (BS) with high-resolution x-ray diffraction (XRD) techniques is the ability to perform simultaneous measurements of velocities and elastic moduli (by Brillouin spectroscopy) and the volume/density (by XRD), independent of any pressure standard. With this unique system, located in the 13BM-D station (GSECARS, APS), it is now possible to study materials with BS and XRD in situ at high pressure-temperature conditions that provide information essential for interpreting seismic observations and constraining models of the composition and evolution of the Earth. Although the system is designed to be very user-friendly, successful BS measurements at high pressure using diamond anvils requires special preparation and a thorough understanding of the peculiarities of the on-line high pressure BS technique. To help our users make the best use of this exceptional technique, we are organizing this COMPRES/GSECARS-supported workshop focusing on the major topics relevant to high pressure research using Brillouin spectroscopy combined with high-resolution x-ray diffraction techniques. The workshop will cover the following topics:

• fundamental aspects of Brillouin scattering
• experimental challenges of BS and XRD at high pressures and temperatures
• plenary lectures
• contributed presentations
• hands-on demonstrations
• software for data collection and analysis
• suggestions for future proposals
  

Note:
Argonne National Laboratory is a restricted-access site. ALL visitors who do not have an up-to-date APS badge must register with the APS. NON-U.S. CITIZENS must register AS SOON AS POSSIBLE; please see the "Notice to Non-U.S. Citizens" on the registration page.

• Vitali Prakapenka (DAC Program, GSECARS, University of Chicago, prakapenka@cars.uchicago.edu)
• Jay Bass (University of Illinois at Urbana-Champaign, jaybass@uiuc.edu)
• Stanislav Sinogeikin (HP-CAT, Carnegie Institution of Washington, ssinog@hpcat.aps.anl.gov)