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A collinear self-emission and laser-backlighting imaging diagnostic
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View: Figures


Image of FIG. 1.
FIG. 1.

Conceptual design of the collinear diagnostic.

Image of FIG. 2.
FIG. 2.

Mounting arrangement on the GenASIS pulser1 at UC San Diego: Photographs of (left) side and (center) top view of mounting of collinear diagnostic in vacuum chamber and (right) photograph of beamsplitter drilled with 1.6 mm hole used for proof-of-principle experiments.

Image of FIG. 3.
FIG. 3.

4 × 10 μm Cu wire array on the 250 kA GenASIS machine1 at UC San Diego demonstrating that the effect of the pinhole drilled into the optic is clearly observable (circled in each image), but limited to a small region of the optic.

Image of FIG. 4.
FIG. 4.

Images of a single wire explosion imaged simultaneously (65 ns) and collinearly: (left) an interferogram and (right) a gated XUV self-emission image.

Image of FIG. 5.
FIG. 5.

Multiple pinhole setup including mounting of pinholes perpendicular to experiments.

Image of FIG. 6.
FIG. 6.

Photographs of the multiple pinhole collinear diagnostic as mounted on the XP generator at Cornell University.

Image of FIG. 7.
FIG. 7.

(a) Schematic diagram of inverse wire array experiments on the XP generator (260 kA, 145 ns) along with (b) gated self-emission image and (c) laser interferogram taken at 158 ns using the collinear diagnostic.

Image of FIG. 8.
FIG. 8.

(a) Interferogram from Figure 7 overlaid with section analysed for areal electron density, and (b) section of the self-emission image in Figure 7 scaled to and vertically aligned with the interferogram.

Image of FIG. 9.
FIG. 9.

Spatially correlated plots and images for (a) areal electron density lineout (blue dotted line on interferogram image), (b) analysed region of interferogram image, (c) self-emission image, and (d) lineout of self-emission taken at the same position as that for the interferogram lineout.

Image of FIG. 10.
FIG. 10.

Laser interferogram and self-emission images taken using the collinear diagnostic where a metallic grid was placed close to the experiment (a) pre-experiment, (b) experiment laser interferogram image, and (c) gated self-emission image from a similar shot.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: A collinear self-emission and laser-backlighting imaging diagnostic