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Phys. Rev. E 80, 056407 (2009) [5 pages]

Direct density measurement of shock-compressed iron using hard x rays generated by a short laser pulse

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E. Brambrink1,*, H. G. Wei1,2,3, B. Barbrel1,4, P. Audebert1, A. Benuzzi-Mounaix1, T. Boehly5, T. Endo6, C. D. Gregory1, T. Kimura6, R. Kodama6, N. Ozaki6, H.-S. Park7, and M. Koenig1
1LULI, Ecole Polytechnique, CEA, UPMC Université Paris 06, 91128 Palaiseau, France
2Shandong University, Jinan, 250100, China
3National Astronomical Observatories, Chinese Academy of Science, Beijing, 100012, China
4Département de Physique Théorique et Appliquée, CEA/DAM, Bruyères-le-Châtel, 91297, Arpajon, France
5Laboratory for Laser Energetics, University of Rochester, Rochester, New York, 14623 USA
6Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
7Lawrence Livermore National Laboratory, Livermore, California 94551-0808, USA

Received 26 August 2009; published 24 November 2009

We present the application of short-pulse laser-driven hard x rays (>40 keV) for the direct density measurement of iron compressed by a laser-driven shock. By using an on-shot calibration of the spectral absorption, we are able to obtain line densities with 5%–10% precision, although the x-ray source is not monochromatic. We also discuss possibilities for increasing the precision, which would be an improvement for equation of state measurements.

© 2009 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevE.80.056407
DOI:
10.1103/PhysRevE.80.056407
PACS:
52.38.Ph

*erik.brambrink@polytechnique.edu

 
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