The Imaging of Z-Pinches Using X-Pinch Backlighting

Douglass, J. D.; Greenly, J. B.; Hammer, D. A.; McBride, R. D.; Pikuz, S. A.; Shelkovenko, T. A.
January 2006
AIP Conference Proceedings;2006, Vol. 808 Issue 1, p129
Academic Journal
Imaging using X-pinch backlighters has been implemented on the COBRA accelerator at Cornell University to study the early stages of wire-array Z-pinches. Two of four return-current posts in the wire-array load region are replaced by X pinches so that two images of one wire in an eight-wire z-pinch are obtained from different angles and at different times. High resolution images have been obtained that show the evolution of wire structure and instabilities. X-pinch wire diameter and other parameters were varied in order to shift the timing of the X pinches relative to the start of the z-pinch current pulse. It was found that XPBL wire diameter (mass per unit length) has the strongest influence on radiation timing. © 2006 American Institute of Physics


Related Articles

  • An Ultra Miniature Pinch Focus Discharge Operating With Submillimetric Anodes And Energy Of 0.1 Joule: Nanofocus. Soto, Leopoldo; Pavéz, Cristian; Moreno, José // AIP Conference Proceedings;2006, Vol. 808 Issue 1, p211 

    An ultra miniature device for pinch discharges has been designed and constructed (nanofocus NF: 5nF, 5–10kV, 5–10kA, 60–250 mJ, 16 ns time to peak current). Sub-millimetric anode radii (0.8 and 0.21mm) covered by coaxial insulators were used for experiments in hydrogen....

  • Anomalous transport effects on magnetic field profile in a motional current sheath. Kayama, M. E.; Aramaki, E. A.; Mota, R. P.; Algatti, M. A.; Honda, R. Y. // AIP Conference Proceedings;2001, Vol. 563 Issue 1, p11 

    The radial magnetic field profile during implosion of a reversed field current sheath in a theta-pinch was investigated through local measurements and simulation of hybrid code. The actual profile was defined by Hermite interpolation polynomial through mean value of the field at discrete radial...

  • Dynamics of X-Pinches on the Llampüdkeñ Generator at 400kA. Suzuki, Francisco; Mitchell, Ian; Gomez, Jorge; Favre, Mario; Wyndham, Edmund // AIP Conference Proceedings;2006, Vol. 808 Issue 1, p157 

    Results on x-pinch experiments in the Llampüdkeñ generator at a current level of 400kA with a rise time of 260 ns are presented. Results from x-pinches of different wire numbers, diameters and of different materials are presented, including Aluminium, Titanium and Deuterated Polystyrene...

  • Multiwire X Pinches on the COBRA Pulsed Power Generator. Shelkovenko, Tatiana A.; Pikuz, Sergey A.; Douglass, Jonathan D.; McBride, Ryan D.; Hammer, David A. // AIP Conference Proceedings;2006, Vol. 808 Issue 1, p153 

    The rebuilt COBRA pulsed power generator, which has a variable current pulse waveform and amplitude (90–150 ns rise time, 0.6 – 1 MA) has extended the range of current pulse parameters that can be used to study X pinches. X pinches with 2 to 12 wires with diameters from 25 to 75...

  • Theory of wire number scaling in wire-array Z pinches. Desjarlais, M.P.; Marder, B.M. // Physics of Plasmas;May99, Vol. 6 Issue 5, p2057 

    Presents a model that describes an amplification over the two-dimensional Rayleigh-Taylor growth rate brought about by kink-like forces on the individual wires. Linear theory of wire-array implosions; Quantitative estimates of the magnitude of the variations that might be observable when the...

  • Megampere Multi-Wire Z-Θ Pinch. Selemir, V. D.; Repin, P. B.; Pikulin, I. V.; Volkov, A. A.; Orlov, A. P.; Tatsenko, O. M.; Markevtsev, I. M.; Moiseenko, A. N.; Selyavsky, V. T.; Dydykin, P. S.; Grebenev, E. V.; Bukharov, V. F.; Ryaslov, E. A.; Kudryavtsev, V. P.; Kotelnikov, D. V.; Duday, P. V. // AIP Conference Proceedings;2006, Vol. 808 Issue 1, p85 

    Experimental results on study of magnetic flux compression efficiency with a plasma shell, formed at electric explosion of a multi-wire cylindrical frame are presented. Liners of 70 mm diameter consisting of 48 tungsten wires of 11 μm diameter were used. The liner was put into longitudinal...

  • 3D Resistive, Radiative MHD Modeling of Z-pinches. Jennings, C. A.; Chittenden, J. P.; Ciardi, A.; Sherlock, M.; Lebedev, S. V.; Ampleford, D. J.; Bland, S. N.; Bott, S. C.; Hall, G.; Rapley, J. // AIP Conference Proceedings;2006, Vol. 808 Issue 1, p57 

    We present results from GORGON, a three dimensional, parallel, radiative, resistive MHD code which we use to study the evolution of various wire array configurations. We describe the implosion of cylindrical wire arrays and the interaction of nested wire arrays on the MAGPIE generator of...

  • Magnetic Field Measurements in Wire-Array Z-Pinches and X Pinches. Syed, W.; Hammer, D. A.; Lipson, M.; van Dover, R. B. // AIP Conference Proceedings;2006, Vol. 808 Issue 1, p315 

    We are investigating several techniques to obtain time-dependent magnetic field measurements in wire-array Z-pinches and X-pinches. One general approach is to use “remote sensing” methods whereby a very small sensor material is placed in the plasma and then is investigated to extract...

  • SPEED2 Driven A Gas Embedded Z-Pinch Preliminary Results. Soto, Leopoldo; Pavéz, Cristian; Moreno, José; Sylvester, Gustavo; Silva, Patricio; Zambra, Marcelo // AIP Conference Proceedings;2006, Vol. 808 Issue 1, p215 

    Preliminary results in a gas embedded Z-pinch driven by the SPEED2 generators are presented. A 0-D model for a quasi static z-pinch with variable line density has been applied to determined the initial conditions to produce a gas embedded z-pinch to be driven by SPEED2 generator. Initial...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics