| Autor: |
Hawreliak, J., Colvin, J., Eggert, J., Kalantar, D. H., Lorenzana, H. E., Pollaine, S., Rosolankova, K., Remington, B. A., Stölken, J., Wark, J. S. |
| Předmět: |
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| Zdroj: |
Astrophysics & Space Science; Jan2007, Vol. 307 Issue 1-3, p285-289, 5p, 2 Diagrams, 4 Graphs |
| Abstrakt: |
X-ray diffraction is a widely used technique for measuring the crystal structure of a compressed material. Recently, short pulse x-ray sources have been used to measure the crystal structure in-situ while a sample is being dynamically loaded. To reach the ultra high pressures that are unattainable in static experiments at temperatures lower than using shock techniques, shockless quasi-isentropic compression is required. Shockless compression has been demonstrated as a successful means of accessing high pressures. The National Ignition Facility (NIF), which will begin doing high pressure material science in 2010, it should be possible to reach over 2 TPa quasi-isentropically. This paper outlines how x-ray diffraction could be used to study the crystal structure in laser driven, shocklessly compressed targets the same way it has been used in shock compressed samples. A simulation of a shockless laser driven iron is used to generate simulated diffraction signals, and recent experimental results are presented. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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