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High-energy X-ray radiography of laser shock loaded metal dynamic fragmentation using high-intensity short-pulse laser.
- Source :
-
Review of Scientific Instruments . Nov2018, Vol. 89 Issue 11, pN.PAG-N.PAG. 6p. 1 Diagram, 4 Graphs. - Publication Year :
- 2018
-
Abstract
- The dynamic fragmentation of shock-loaded high-Z metal is of considerable importance for both basic and applied science. The areal density and mass-velocity distribution of dynamic fragmentation are crucial factors in understanding this issue. Experimental methods, such as pulsed X-ray radiography and proton radiography, have been utilized to obtain information on such factors; however, they are restricted to a complex device, and the spatial resolution is in the order of 100 μm. In this work, we present the high-quality radiography of the dynamic fragmentation of laser shock-loaded tin, with good two-dimensional (2D) spatial resolution. Dynamic fragmentation is generated via high-intensity ns-laser shock-loaded tin. A high-energy X-ray source in the 50–200 keV range is realized by the interaction of a high-intensity ps-pulse with an Au microwire target, attached to a low-Z substrate material. A high 2D resolution of 12 μm is achieved by point-projection radiography. The dynamic-fragmentation radiography is clear, and the signal-to-noise ratio is sufficiently high for a single-shot experiment. This unique technique has potential application in high-energy density experiments. [ABSTRACT FROM AUTHOR]
- Subjects :
- *RADIOGRAPHY
*SHOCK waves
*LASER peening
*SIGNAL-to-noise ratio
*ENERGY density
Subjects
Details
- Language :
- English
- ISSN :
- 00346748
- Volume :
- 89
- Issue :
- 11
- Database :
- Academic Search Index
- Journal :
- Review of Scientific Instruments
- Publication Type :
- Academic Journal
- Accession number :
- 133317556
- Full Text :
- https://doi.org/10.1063/1.5034401