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Capsule implosions for continuum x-ray backlighting of opacity samples at the National Ignition Facility.

作者信息

Opachich Y P, Heeter R F, Barrios M A, Garcia E M, Craxton R S, King J A, Liedahl D A, McKenty P W, Schneider M B, May M J, Zhang R, Ross P W, Kline J L, Moore A S, Weaver J L, Flippo K A, Perry T S

机构信息

National Security Technologies, LLC, Livermore, California 94550, USA.

Lawrence Livermore National Laboratory, Livermore, California 94550, USA.

出版信息

Phys Plasmas. 2017 Jun;24(6):063301. doi: 10.1063/1.4985076. Epub 2017 Jun 8.

DOI:10.1063/1.4985076
PMID:29104422
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5648568/
Abstract

Direct drive implosions of plastic capsules have been performed at the National Ignition Facility to provide a broad-spectrum (500-2000 eV) X-ray continuum source for X-ray transmission spectroscopy. The source was developed for the high-temperature plasma opacity experimental platform. Initial experiments using 2.0 mm diameter polyalpha-methyl styrene capsules with ∼20 m thickness have been performed. X-ray yields of up to ∼1 kJ/sr have been measured using the Dante multichannel diode array. The backlighter source size was measured to be ∼100 m FWHM, with ∼350 ps pulse duration during the peak emission stage. Results are used to simulate transmission spectra for a hypothetical iron opacity sample at 150 eV, enabling the derivation of photometrics requirements for future opacity experiments.

摘要

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本文引用的文献

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