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Shock model description of the interaction radiation pulse in nested wire array z-pinches
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10.1063/1.4771673
/content/aip/journal/pop/19/12/10.1063/1.4771673
http://aip.metastore.ingenta.com/content/aip/journal/pop/19/12/10.1063/1.4771673
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Nested wire array setups for (a) Z and (b) MAGPIE showing the difference in relative length of the inner array used to control the inner array current fraction.

Image of FIG. 2.
FIG. 2.

End-on self emission imaging (; set by diffraction) at 201-211 ns demonstrates that bow shocks are present in the flow around the wires of the inner array (the inner array diameter is 8 mm). The image is before the start of the implosion phase of the outer. Labels show the interpretation of this structure as discussed in the text.

Image of FIG. 3.
FIG. 3.

Snowplow implosion variables for a MAGPIE implosion with (solid lines) and without (dotted lines) an inner array (a) current, (b) radial position, (c) power emitted by the snowplow piston, and (d) piston velocity.

Image of FIG. 4.
FIG. 4.

(a) XUV self-emission () from side-on to a nested Al array at 201 ns, immediately before interaction of the outer with the inner array. (b) XUV self-emission at 211 ns as sections of the imploding outer array pass the inner wire array. The bubbles formed during the implosion of the outer array emit as they pass the inner wires and enter the region of inflowing material perturbed by the presence of the inner array. (c) The trajectory of the outer array measured by optical radial streak shows that the imploding sheath decelerates below the ablation velocity (). Shown as grey dotted lines are assumed trajectories of ablation streams, initially traveling at the ablation velocity, and later at the shocked velocity, as shown in by Eq. (1).

Image of FIG. 5.
FIG. 5.

(a) Contributions of viscous shock heating and ohmic heating to nested interaction pulse. (b) Interaction pulse radiation separated into inner and outer material.

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/content/aip/journal/pop/19/12/10.1063/1.4771673
2012-12-27
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Shock model description of the interaction radiation pulse in nested wire array z-pinches
http://aip.metastore.ingenta.com/content/aip/journal/pop/19/12/10.1063/1.4771673
10.1063/1.4771673
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