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Updated: Jun 22, 2026

Applying X-ray Imaging Crystal Spectroscopy for Use as a High Temperature Plasma Diagnostic
Published on: August 25, 2016
Plasma-density determination from x-ray radiography of laser-driven spherical implosions
F J Marshall1, P W McKenty, J A Delettrez
1Laboratory for Laser Energetics, University of Rochester 250 E. River Road, Rochester, New York 14623, USA.
Abstract:
The fuel layer density of an imploding laser-driven spherical shell is inferred from framed x-ray radiographs. The density distribution is determined by using Abel inversion to compute the radial distribution of the opacity kappa from the observed optical depth tau. With the additional assumption of the mass of the remaining fuel, the absolute density distribution is determined. This is demonstrated on the OMEGA laser system with two x-ray backlighters of different mean energies that lead to the same inferred density distribution independent of backlighter energy.
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