X-ray radiography and scattering diagnosis of dense shock-compressed matter

Le Pape, Sebastien; Neumayer, Paul; Fortmann, Carsten; Döppner, Tilo; Davis, Paul; Kritcher, Andrea; Landen, Otto; Glenzer, Siegfried
May 2010
Physics of Plasmas;May2010, Vol. 17 Issue 5, p056309
Academic Journal
Highly coupled Boron plasma has been probed by spectrally resolving an x-ray source scattered by the plasma. Electron density was inferred from the inelastic feature in the collective scattering regime. In addition, the mass density inferred from the noncollective x-ray Thomson scattering has been tested with independent characterization using x-ray radiography in the same drive condition. High-intensity laser produced K-alpha radiation was used as a backlighter for these dynamically compressed plasma experiments providing a high temporal resolution of the measurements. Mass density measurements from both methods are in good agreement. The measurements yield a compression of 1.3 in agreement with detailed radiation-hydrodynamic modeling. From the charge state measured in the noncollective regime and the electron density measured in the collective regime mass density can then be constrained to 3.15±0.7.


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