Direct density measurement of shock-compressed iron using hard x rays generated by a short laser pulse.
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.
Brambrink
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LULI, Ecole Polytechnique, UPMC Université Paris 06, 91128 Palaiseau, France. erik.brambrink@polytechnique.edu
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Barbrel
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Kimura
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