Solid Iron Compressed Up to 560 GPa [Fe at Earth core conditions probed by EXAFS]
Abstract
Dynamic compression by multiple shocks is used to compress iron up to 560 GPa (5.6 Mbar), the highest solid-state pressure yet attained for iron in the laboratory. Extended x-ray absorption fine structure (EXAFS) spectroscopy offers simultaneous density, temperature, and local-structure measurements for the compressed iron. The data show that the close-packed structure of iron is stable up to 560 GPa, the temperature at peak compression is significantly higher than expected from pure compressive work, and the dynamic strength of iron is many times greater than the static strength based on lower pressure data. The results provide the first constraint on the melting line of iron above 400 GPa.
- Authors:
-
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Univ. of Rochester, NY (United States). Lab. for Laser Energetics
- Publication Date:
- Research Org.:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1466948
- Alternate Identifier(s):
- OSTI ID: 1104370
- Report Number(s):
- LLNL-JRNL-505552
Journal ID: ISSN 0031-9007; PRLTAO; 524250
- Grant/Contract Number:
- AC52-07NA27344
- Resource Type:
- Journal Article: Accepted Manuscript
- Journal Name:
- Physical Review Letters
- Additional Journal Information:
- Journal Volume: 111; Journal Issue: 6; Journal ID: ISSN 0031-9007
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Ping, Y., Coppari, F., Hicks, D. G., Yaakobi, B., Fratanduono, D. E., Hamel, S., Eggert, J. H., Rygg, J. R., Smith, R. F., Swift, D. C., Braun, D. G., Boehly, T. R., and Collins, G. W. Solid Iron Compressed Up to 560 GPa [Fe at Earth core conditions probed by EXAFS]. United States: N. p., 2013.
Web. doi:10.1103/PhysRevLett.111.065501.
Ping, Y., Coppari, F., Hicks, D. G., Yaakobi, B., Fratanduono, D. E., Hamel, S., Eggert, J. H., Rygg, J. R., Smith, R. F., Swift, D. C., Braun, D. G., Boehly, T. R., & Collins, G. W. Solid Iron Compressed Up to 560 GPa [Fe at Earth core conditions probed by EXAFS]. United States. https://doi.org/10.1103/PhysRevLett.111.065501
Ping, Y., Coppari, F., Hicks, D. G., Yaakobi, B., Fratanduono, D. E., Hamel, S., Eggert, J. H., Rygg, J. R., Smith, R. F., Swift, D. C., Braun, D. G., Boehly, T. R., and Collins, G. W. 2013.
"Solid Iron Compressed Up to 560 GPa [Fe at Earth core conditions probed by EXAFS]". United States. https://doi.org/10.1103/PhysRevLett.111.065501. https://www.osti.gov/servlets/purl/1466948.
@article{osti_1466948,
title = {Solid Iron Compressed Up to 560 GPa [Fe at Earth core conditions probed by EXAFS]},
author = {Ping, Y. and Coppari, F. and Hicks, D. G. and Yaakobi, B. and Fratanduono, D. E. and Hamel, S. and Eggert, J. H. and Rygg, J. R. and Smith, R. F. and Swift, D. C. and Braun, D. G. and Boehly, T. R. and Collins, G. W.},
abstractNote = {Dynamic compression by multiple shocks is used to compress iron up to 560 GPa (5.6 Mbar), the highest solid-state pressure yet attained for iron in the laboratory. Extended x-ray absorption fine structure (EXAFS) spectroscopy offers simultaneous density, temperature, and local-structure measurements for the compressed iron. The data show that the close-packed structure of iron is stable up to 560 GPa, the temperature at peak compression is significantly higher than expected from pure compressive work, and the dynamic strength of iron is many times greater than the static strength based on lower pressure data. The results provide the first constraint on the melting line of iron above 400 GPa.},
doi = {10.1103/PhysRevLett.111.065501},
url = {https://www.osti.gov/biblio/1466948},
journal = {Physical Review Letters},
issn = {0031-9007},
number = 6,
volume = 111,
place = {United States},
year = {Mon Aug 05 00:00:00 EDT 2013},
month = {Mon Aug 05 00:00:00 EDT 2013}
}
Web of Science
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