X-ray Doppler Velocimetry for Diagnosis of Fluid Motion in ICF Implosions

Conference · Wed Sep 06 00:00:00 EDT 2017 · Proceedings Volume 10390, Target Diagnostics Physics and Engineering for Inertial Confinement Fusion VI

OSTI ID:1601293

Koch, J.A. ^[1]; King, J.A. ^[1]; Huffman, E. ^[1]; Freeman, R.R. ^[1]; Dutra, E.C. ^[1]; Field, J.E. ^[2]; Kilkenny, J.D. ^[2]; Hall, G.N. ^[2]; Harding, E. ^[3]; Rochau, G.A. ^[3]; Porter, J.L. ^[3]; Covington, A.M. ^[4]; Beg, F.N. ^[5]

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1. National Security Technologies, LLC. (NSTec), Las Vegas, NV (United States)
2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
3. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
4. University of Nevada, Reno
5. University of California, San Diego

Paper describes development of 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 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. This paper reviews the technique and discusses progress towards benchmarking the technique with proof-of-principle HEDP experiments.

• Research Organization: Nevada National Security Site/National Security Technologies, LLC (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA), Office of Defense Programs (DP)
• DOE Contract Number: DE-AC52-06NA25946
• OSTI ID: 1601293
• Report Number(s): DOE/NV/25946-3327
• Journal Information: Proceedings Volume 10390, Target Diagnostics Physics and Engineering for Inertial Confinement Fusion VI, Journal Issue: 1039008; Conference: Paper for SPIE conference proceedings, September 7, 2017.; Related Information: https://www.osti.gov/biblio/1502882, https://www.osti.gov/biblio/1508319,
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Inertial confinement fusion
Crystal
X-ray imaging
X-ray spectroscopy
Fluid velocity