Magnetohydrodynamic simulation of solid-deuterium-initiated Z-pinch experiments

Sheehey, P.T.

doi:10.2172/10119887

1994

DOI: 10.2172/10119887

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Magnetohydrodynamic simulation of solid-deuterium-initiated Z-pinch experiments

P.T. Sheehey

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2003

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Operation regimes of magnetically insulated transmission lines

Presura

Bauer

Esaulov

et al.

Digest of Technical Papers. PPC-2003. 14th IEEE International Pulsed Power Conference (IEEE Cat. No.03CH37472)

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Magnetically Insulated Transmission Lines (MITLs) are commonly used for efticient power transport in the vacuum section of pulsed power devices. Plasma forming from metal surfaces l i m i t s the power transmitted to a load through M1TL.s. It eventually shunts the load, producing so-called MITL closure.Fundamental experiments are being performed on high intensity power transmission through coaxial cylindrical vacuum transmission lines. A current that rises to 1 MA in 100 ns is driven through the MITLs by a 2 -W , 2 -0 pulse generator (Zebra). The condition of the MITL surfaces is carefnlly controlled and characterized before each shot. Differential B-dot probes measure the current before and after the MITL, to determine the time of gap closure. Optical imaging and laser diagnostics observe the plasma evolution in the gap with time and space resolution.The radial gap of the cylindrical vacuum transmission line has been systematically varied, and the time of MITL closure measured. They increase with the radial gap size in a discontinuous manner. Critical transitions (discontinuous jumps in closure time) appear to separate distinct MITL operation regimes. This is the first experiment and data set of this kind known to the authors.Electromagnetic-particle-in-cell and radiationmagnetohydrodynamic computer modeling assist the experiment, being used to refine the experimental design and to interpret the results.

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Operation regimes of magnetically insulated transmission lines

Presura

Bauer

Esaulov

et al.

Digest of Technical Papers. PPC-2003. 14th IEEE International Pulsed Power Conference (IEEE Cat. No.03CH37472)

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Development of radiation-magnetohydrodynamic computer modeling of gas-discharge EUV sources for microlithography

et al. 2003

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A radiation-magnetohydrodynamic (MHD) model of gas discharges has been developed to accelerate the development of compact, intense sources of EUV radiation for microlithography. The model is an MHD numerical simulation with atomic and radiation physics. The plasma evolution is simulated with the MHRDR (Magneto-Hydro-RadiativeDynamic-Research) 2D, three-temperature, MHD computer code. The MHD results are postprocessed with a code that calculates the 13.4-nm EUV radiation output from Xe ions, based on a detailed collisional-radiative atomic kinetics model. Modeling of a dense plasma focus discharge, in a Xe-He gas mixture, has been initiated with this new tool.

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Magnetohydrodynamic simulation of solid-deuterium-initiated Z-pinch experiments

Cited by 2 publications

References 2 publications

Operation regimes of magnetically insulated transmission lines

Operation regimes of magnetically insulated transmission lines

Development of radiation-magnetohydrodynamic computer modeling of gas-discharge EUV sources for microlithography

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