Computer Science – Sound
Scientific paper
Dec 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003agufm.t11c0410o&link_type=abstract
American Geophysical Union, Fall Meeting 2003, abstract #T11C-0410
Computer Science
Sound
3909 Elasticity And Anelasticity, 3924 High-Pressure Behavior, 3954 X Ray, Neutron, And Electron Spectroscopy And Diffraction, 3994 Instruments And Techniques
Scientific paper
To address the structure and composition of planetary interiors, and to confront mineralogical models with geophysical (i.e. seismological) observations, it is essential to measure the effects of pressure on the elastic properties of geo-materials. To date, many techniques have been employed for that purpose, such as ultrasonic techniques, inelastic neutron scattering, high-pressure Brillouin scattering, nuclear resonant inelastic scattering, radial x-ray diffraction, inelastic x-ray scattering (IXS), or more recently, impulse stimulated light scattering. Among all these techniques, only IXS in conjunction with the diamond anvil cell provides a direct measurement of acoustic (collective) excitations across the Brillouin zone to pressures in excess of 100 GPa [Fiquet et al., 2001] and with accuracies better than a few percent on any material (transparent, opaque, powder, single-crystal, etc\ldots). Such measurements allow a simple and direct derivation of sound velocities and elastic moduli that are model independent. We will present an overview of several IXS experiments on Fe and FeO at high pressure and on FeS at high pressure and temperature. These experiments were performed on poly-crystalline samples at the IXS-dedicated beamline ID28 of the European Synchrotron Radiation Facility. We will conclude by presenting results of IXS experiments performed on oriented single crystals that provide direct determinations of the phonon dispersion curves of molybdenum along its high symmetry crystallographic direction up to 37 GPa.
G. Fiquet, J. Badro, F. Guyot, H. Requardt, and M. Krisch, Science \textbf{291}, 468 (2001).
Badro James
d'Astuto Matteo
Farber Daniel L.
Fiquet Guillaume
Gregoryanz Eugene
No associations
LandOfFree
Inelastic x-ray scattering in extreme conditions: a tool for investigating deep planetary interiors. does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Inelastic x-ray scattering in extreme conditions: a tool for investigating deep planetary interiors., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Inelastic x-ray scattering in extreme conditions: a tool for investigating deep planetary interiors. will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1426364