| NSF Org: |
EAR Division Of Earth Sciences |
| Recipient: |
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| Initial Amendment Date: | February 7, 2008 |
| Latest Amendment Date: | February 7, 2008 |
| Award Number: | 0711599 |
| Award Instrument: | Standard Grant |
| Program Manager: |
Robin Reichlin
EAR Division Of Earth Sciences GEO Directorate for Geosciences |
| Start Date: | January 1, 2008 |
| End Date: | December 31, 2011 (Estimated) |
| Total Intended Award Amount: | $360,937.00 |
| Total Awarded Amount to Date: | $360,937.00 |
| Funds Obligated to Date: |
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| History of Investigator: |
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| Recipient Sponsored Research Office: |
1850 RESEARCH PARK DR STE 300 DAVIS CA US 95618-6153 (530)754-7700 |
| Sponsor Congressional District: |
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| Primary Place of Performance: |
1850 RESEARCH PARK DR STE 300 DAVIS CA US 95618-6153 |
| Primary Place of
Performance Congressional District: |
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| Unique Entity Identifier (UEI): |
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| Parent UEI: |
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| NSF Program(s): |
Petrology and Geochemistry, Geophysics |
| Primary Program Source: |
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| Program Reference Code(s): |
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| Program Element Code(s): |
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| Award Agency Code: | 4900 |
| Fund Agency Code: | 4900 |
| Assistance Listing Number(s): | 47.050 |
ABSTRACT
The volumetric properties of non-crystalline materials relevant to Earth¹s interior are being studied using X-ray computed tomography and absorption at high pressures and temperatures. The results are applicable to differentiation of the magma ocean, core formation, and segregation and convection dynamics related to the thermal and chemical evolution of the Earth. The research utilizes the new rotating anvil apparatus and synchrotron X-ray radiation to determine density by volume reconstruction and from Beer-Lambert law using X-ray absorption data. The investigators focus their efforts on several simple and natural silicate melt compositions spanning a range of polymerization states, and on Fe-S-Ni-Si melts. Data acquired in this study improves constraints on the compressibility and thermal expansion required for an accurate equation of state for naturally occurring melt compositions. The project also includes technical improvements of tomography hardware on the 13-BM-D beamline operated by GSECARS - Advance Photon Source, Argonne National Laboratory, as well as, the development of new strategies for image acquisition at high P-T conditions and data processing with broader applications for non-destructive materials characterization.
PUBLICATIONS PRODUCED AS A RESULT OF THIS RESEARCH
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