Registration/abstract deadline: May 31, 2009
The main goal of the diamond anvil cell (DAC) program at GSECARS is to address key geochemical and geophysical problems across the entire pressure-temperature range of the Earth and other terrestrial planets.
Such questions are addressed by means of (1) multi-Mbar pressure studies of samples with grain sizes covering the entire length scale of crystallinity (single crystal, micro/nano-crystalline, amorphous, and liquid), (2) equations of state and phase relations, (3) accurate structural and electron density determinations, (4) high-pressure elasticity and rheology, (5) properties of melts and glasses, (6) kinetics of phase transformations, (7) chemical reactions at extreme conditions, (8) properties of multi-component systems, and (9) development of high accuracy pressure calibrations at high temperatures.
On-line Brillouin Spectroscopy at GSECARS:
Basic Principles and Application for High Pressure Research
September 23-25, 2009
Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois
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:
Limited financial support will be available for participants on first-come first-served basis, with priority given to domestic students, postdocs, and young scientists. Send requests to Vitali Prakapenka (firstname.lastname@example.org) by May 31, 2009.
The final registration and abstract (one page maximum) deadline is May 31, 2009.
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.
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Posted February 17, 2009
Maintained and updated by Vitali Prakapenka, 02/17/2009