X-ray Thomson Scattering Measurements of Temperature and Density from Multi-shocked CH Capsules

X-ray Thomson Scattering Measurements of Temperature and Density from Multi-shocked CH Capsules
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Download or read book X-ray Thomson Scattering Measurements of Temperature and Density from Multi-shocked CH Capsules written by and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Proof-of-principle measurements of the electron densities, temperatures, and ionization states of spherically compressed multi-shocked CH (polystyrene) capsules have been achieved using spectrally resolved x-ray Thomson scattering. A total energy of 13.5 kJ incident on target is used to compress a 70 [mu]m thick CH shell above solid-mass density using three coalescing shocks. Separately, a laser-produced zinc He-[alpha] x-ray source at 9 keV delayed 200 ps-800 ps after maximum compression is used to probe the plasma in the non-collective scattering regime. The data show that x-ray Thomson scattering enables a complete description of the time-dependent hydrodynamic evolution of shock-compressed CH capsules, with a maximum measured density of [rho]> 6 g cm-3. Additionally, the results demonstrate that accurate measurements of x-ray scattering from bound-free transitions in the CH plasma demonstrate strong evidence that continuum lowering is the primary ionization mechanism of carbon L-shell electrons.


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