Modeling Planetary Interiors in Laser Based Experiments Using Shockless Compression

Details Modeling Planetary Interiors in Laser Based Experiments Using Shockless Compression Modeling Planetary Interiors in Laser Based Experiments Using Shockless Compression

Jan 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007ap%26ss.307..285h&link_type=abstract

Astrophysics and Space Science, Volume 307, Issue 1-3, pp. 285-289

Astronomy and Astrophysics

Astrophysics

3

Laser Shock, Shockless Compression, Diffraction, Dynamic Diffraction, Simulation

Scientific paper

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.

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