Temporally-resolved, area-imaged velocimeter system for dynamic materials experiments

Thomas Edward Tierney, Damian C. Swift, Billy Norman Vigil, Dennis L. Paisley, Sheng Nian Luo, Randall Philip Johnson, Samuel A. Letzring

Research output: Contribution to journalConference article

1 Scopus citations

Abstract

Shocks extending across crystals' grain boundaries can nucleate and grow velocity fluctuations on the order of 5-10% when the shock speeds differ in the adjacent grains. Dynamic materials experiments at the Los Alamos National Laboratory Trident Laser Laboratory aim to examine this phenomenon by temporally- and spatially-resolving free surface velocity over a large region of interest. While line-imaged velocimetry can serve as a quantitative method for examining the velocity fluctuations across a single boundary, it is more desirable to resolve the velocity field around an entire embedded grain. We present a novel diagnostic design that utilizes a four-frame gated-optical-imaging interferometric velocimeter in combination with a streaked line-imaging interferometric velocimeter. This diagnostic will provide high-spatial resolution velocigraphs of a shock as it hits a free surface in multigrain crystals.

Original languageEnglish
Article number59200Z
Pages (from-to)1-8
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume5920
DOIs
StatePublished - Dec 1 2005
EventUltrafast X-Ray Detectors, High-Speed Imaging, and Applications -
Duration: Dec 1 2005 → …

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