Modeling planetary interiors in laser based experiments using shockless compression

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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 ... continued below

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Hawreliak, J; Colvin, J; Eggert, J; Kalantar, D; Lorenzana, H E; Pollaine, S et al. April 20, 2006.

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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 recently experimental results are presented.

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  • Presented at: HEDLA 2006`, Houston, TX, United States, Mar 11 - Mar 14, 2006

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  • Report No.: UCRL-PROC-221172
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 895429
  • Archival Resource Key: ark:/67531/metadc881291

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  • April 20, 2006

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  • Sept. 22, 2016, 2:13 a.m.

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  • Nov. 29, 2016, 8:21 p.m.

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Hawreliak, J; Colvin, J; Eggert, J; Kalantar, D; Lorenzana, H E; Pollaine, S et al. Modeling planetary interiors in laser based experiments using shockless compression, article, April 20, 2006; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc881291/: accessed September 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.