Plasma-Density Determination from X-Ray Radiography of Laser-Driven Spherical Implosions

Author(s)
Frenje, Johan A.; Li, Chikang; Petrasso, Richard D.; Seguin, Fredrick Hampton; Mancini, R. C.
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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 κ from the observed optical depth τ. 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.
Date issued
2009-05
URI
http://hdl.handle.net/1721.1/52670
Department
Massachusetts Institute of Technology. Plasma Science and Fusion Center
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Marshall, F. J. et al "Plasma-Density Determination from X-Ray Radiography of Laser-Driven Spherical Implosions." Physical Review Letters 102.18 (2009): 185004. © 2009 The American Physical Society
Version: Final published version
ISSN
0031-9007
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