NDLI: Neon Z-pinch experiment on Hawk

Content Provider	IEEE Xplore Digital Library
Author	Murphy, D.P. Commisso, R.J. Mosher, D. Phipps, D.G. Ponce, D.M. Stephanakis, S.J. Weber, B.V. Young, F.C. Qid, N.
Copyright Year	2004
Description	Author affiliation: Naval Res. Lab., Washington, DC, USA (Murphy, D.P.; Commisso, R.J.)
Abstract	Summary form only given. Neon Z-pinches on Hawk (0.6 MA, 300 ns implosion time) are energetically equivalent to argon Z-pinches on the DTRA Decade Quad generator at 6 MA, 300 ns. Conditions leading to optimized K-shell radiation on Hawk should therefore be applicable to the higher current of Decade. The advantages of Hawk are high shot rate (10-20 per day) and superior diagnostic access, allowing experimental studies and code comparisons that would be prohibitively expensive on Decade. The double-shell gas-puff valve and nozzle were used previously (with argon) on Double Eagle and Decade. The outer diameter of the gas distribution is about 8 cm and the axial length is 4 cm. The gas density distribution was measured using laser-induced fluorescence. The time-dependent Z-pinch inductance is calculated from current and voltage measurements. The imploding plasma is diagnosed using a 2D holographic interferometer that produces images at two times during a single shot. Radiation diagnostics include X-ray diodes to measure time-dependent K-shell and UV+K-shell power and yield, a multi-shot pinhole camera to image the pinch in the K-shell region, a multi-detector array to measure the axial dependence of the radiation, and a crystal spectrometer instrumented with both film, to record the spectrum, and PIN diodes to record the time-dependent intensity of selected lines. Our goal is to determine the relationship between the initial conditions and the radiation produced by comparing experimental results with theoretical modeling, and to suggest ways to maximize the argon K-shell radiation on Decade.
Sponsorship	Plasma Sci. and Applications Committee of the IEEE Nuclear and Plasma Sci. Soc
File Size	76958
File Format	PDF
ISBN	0780383346
ISSN	07309244
DOI	10.1109/PLASMA.2004.1340183
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-07-01
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Plasma measurements Argon Power measurement Valves Density measurement Gas lasers X-ray lasers Fluorescence Voltage measurement Plasma density
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

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