Anisotropy of radiation emitted from planar wire arrays

Kantsyrev, V.L.; Chuvatin, A. S.; Esaulov, A. A.; Safronova, A.S.; Rudakov, L. I.; Velikovich, A. L.; Williamson, K.; Osborne, G. C.; Shrestha, I.; Weller, M. E.; Shlyaptseva, V. V.

doi:10.1063/1.4817023

Cited by 12 publications

(11 citation statements)

References 19 publications

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“…A simplified hohlraum had the inner (FIG.6a). The highest yield/p e shown that m mulation has de ohlraum design lso, VisRad co [5] (typical ra additional Zebr th modified V y of the T R dis timated to be ut shields. Alto erent spectral r s (FIG.4b) at such ssfully e to Al IG.6b).…”

Section: Demonstration Of Equally Redistributed Currents and The Syncmentioning

confidence: 99%

“…PWA turned out to be an effective radiator [2][3][4]. Compact, mm-scale, double-PWA (DPWA) and triple-PWA (TPWA) have demonstrated: larger resistive energy (>30 kJ/cm) and power (> 1TW/cm) gain [3], highest yield current scaling (I 1.8÷2 ) [3] among all loads tested at University-scale machines, anisotropy of power/yield dependent on wires' rows [5], and the possibility of radiation pulse shaping [6]. Planar foil liner (PFL) source (a promising alternative source to wire arrays [4]) has also shown yields which are close to the one of PWA, but with better axial Te and Ne gradients [4].…”

Section: Introductionmentioning

confidence: 99%

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New compact hohlraum configuration research at the 1.7 MA Z-pinch generator

Kantsyrev¹,

Chuvatin²,

Rudakov³

et al. 2014

AIP Conference Proceedings

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Abstract.A new compact Z-pinch x-ray hohlraum design with parallel-driven x-ray sources was experimentally demonstrated in a full configuration with a central target and tailored shine shields (to provide a symmetric temperature distribution on the target) at the 1.7 MA Zebra generator. This presentation reports on the joint success of two independent lines of research. One of these was the development of new sources --planar wire arrays (PWAs). PWAs turned out to be a prolific radiator. Another success was the drastic improvement in energy efficiency of pulsed-power systems, such as the Load Current Multiplier (LCM). The Zebra/LCM generator almost doubled the plasma load current to 1.7 MA. The two above-mentioned innovative approaches were used in combination to produce a new compact hohlraum design for ICF, as jointly proposed by SNL and UNR. Good agreement between simulated and measured radiation temperature of the central target is shown. Experimental comparison of PWAs with planar foil liners (PFL) -another viable alternative to wire array loads at multi-MA generators show promising data. Results of research at the University of Nevada Reno allowed for the study of hohlraum coupling physics at University-scale generators. The advantages of new hohlraum design applications for multi-MA facilities with W or Au double PWAs or PFL x-ray sources are discussed.

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Section: Demonstration Of Equally Redistributed Currents and The Syncmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

New compact hohlraum configuration research at the 1.7 MA Z-pinch generator

Kantsyrev¹,

Chuvatin²,

Rudakov³

et al. 2014

AIP Conference Proceedings

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“…The resolution of several important problems in the realization of the new hohlraum design has already been achieved. The possibility of PWAs x-ray pulse shaping was demonstrated [4,5], the anisotropy of PWA radiation output was studied [5], the maximizing of PWA radiation yield and power while keeping mm-scale source dimensions have been shown [5,6]. Recently, using a simplified compact hohlraum design (without capsule/target and tailored shine shields) equal current redistribution in several magnetically decoupled Z-pinch PWAs driven in parallel without radiation yield and power loss was achieved [7].…”

mentioning

confidence: 99%

“…The uniformity of the distribution of T R on the target surface was improved significantly with the application of tailored shine shields between the sources and a target ( Fig.1). Also, we are taking into account that the W DPWA is an anisotropic x-ray source [5] (typical ratio K=1.2 of power radiated along wire rows to one emitted orthogonal to planes was measured in our new Zebra tests) and maximum radiation is emitted in the direction parallel to the wire planes [5]. In this particular scheme a proper design of shine shields was applied to use the anisotropy to increase the radiation flux at the target surface.…”

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confidence: 99%

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Compact hohlraum configuration with parallel planar-wire-array x-ray sources at the 1.7-MA Zebra generator

et al. 2014

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A compact Z-pinch x-ray hohlraum design with parallel-driven x-ray sources is experimentally demonstrated in a configuration with a central target and tailored shine shields at a 1.7-MA Zebra generator. Driving in parallel two magnetically decoupled compact double-planar-wire Z pinches has demonstrated the generation of synchronized x-ray bursts that correlated well in time with x-ray emission from a central reemission target. Good agreement between simulated and measured hohlraum radiation temperature of the central target is shown. The advantages of compact hohlraum design applications for multi-MA facilities are discussed.

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