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Proceedings Paper

X-ray doppler velocimetry for diagnosis of fluid motion in ICF implosions
Author(s): J. A. Koch; J. A. King; E. Huffman; R. R. Freeman; E. C. Dutra; J. E. Field; J. D. Kilkenny; G. N. Hall; E. Harding; G. A. Rochau; J. L. Porter; A. M. Covington; F. N. Beg
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Paper Abstract

We are developing a novel diagnostic for measurement of bulk fluid motion in materials, that is particularly applicable to very hot, x-ray emitting plasmas in the High Energy Density Physics (HEDP) regime. The X-ray Doppler Velocimetry (XDV) technique relies on monochromatic imaging in multiple x-ray energy bands near the center of an x-ray emission line in a plasma, and utilizes bent imaging crystals. Higher energy bands are preferentially sensitive to plasma moving towards the viewer, while lower energy bands are preferentially sensitive to plasma moving away from the viewer. Combining multiple images in different energy bands allows for a reconstruction of the fluid velocity field integrated along the line of sight. We review the technique, and we discuss progress towards benchmarking the technique with proof-of-principle HEDP experiments.

Paper Details

Date Published: 6 September 2017
PDF: 6 pages
Proc. SPIE 10390, Target Diagnostics Physics and Engineering for Inertial Confinement Fusion VI, 1039008 (6 September 2017); doi: 10.1117/12.2277814
Show Author Affiliations
J. A. Koch, Nevada National Security Site (United States)
J. A. King, Nevada National Security Site (United States)
E. Huffman, Nevada National Security Site (United States)
R. R. Freeman, Nevada National Security Site (United States)
E. C. Dutra, Nevada National Security Site (United States)
J. E. Field, Lawrence Livermore National Lab. (United States)
J. D. Kilkenny, Lawrence Livermore National Lab. (United States)
G. N. Hall, Lawrence Livermore National Lab. (United States)
E. Harding, Sandia National Labs. (United States)
G. A. Rochau, Sandia National Labs. (United States)
J. L. Porter, Sandia National Labs. (United States)
A. M. Covington, Univ. of Nevada, Reno (United States)
F. N. Beg, Univ. of California, San Diego (United States)


Published in SPIE Proceedings Vol. 10390:
Target Diagnostics Physics and Engineering for Inertial Confinement Fusion VI
Jeffrey A. Koch; Gary P. Grim, Editor(s)

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