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Title: Multiwire X Pinches on the COBRA Pulsed Power Generator

Abstract

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 {mu}m of several different wire materials (from Al to W) have been studied. The influence of different current shapes on X pinch plasma formation and pinch implosion dynamics has been studied using a set of diagnostics with spatial and/or temporal resolution. Multiwire X pinches were placed in the diode center and/or two four wire X pinches were places in one of four parallel return current circuits of the diode. Radiographic images of different test objects, wires in the array and the X pinches, themselves, were obtained with {mu}m scale spatial resolution.

Authors:
; ; ; ;  [1]
  1. Laboratory of Plasma Studies, Cornell University, Ithaca, NY 14853 (United States)
Publication Date:
OSTI Identifier:
20729237
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 808; Journal Issue: 1; Conference: 6. international conference on dense Z-pinches, Oxford (United Kingdom), 25-28 Jul 2005; Other Information: DOI: 10.1063/1.2159342; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; AMPLITUDES; ELECTRIC CURRENTS; EXPLODING WIRES; IMAGES; IMPLOSIONS; PINCH EFFECT; PLASMA; PLASMA DIAGNOSTICS; POWER SUPPLIES; PULSE RISE TIME; PULSES; SPATIAL RESOLUTION; WAVE FORMS; X RADIATION

Citation Formats

Shelkovenko, Tatiana A., Pikuz, Sergey A., Douglass, Jonathan D., McBride, Ryan D., and Hammer, David A. Multiwire X Pinches on the COBRA Pulsed Power Generator. United States: N. p., 2006. Web. doi:10.1063/1.2159342.
Shelkovenko, Tatiana A., Pikuz, Sergey A., Douglass, Jonathan D., McBride, Ryan D., & Hammer, David A. Multiwire X Pinches on the COBRA Pulsed Power Generator. United States. doi:10.1063/1.2159342.
Shelkovenko, Tatiana A., Pikuz, Sergey A., Douglass, Jonathan D., McBride, Ryan D., and Hammer, David A. Thu . "Multiwire X Pinches on the COBRA Pulsed Power Generator". United States. doi:10.1063/1.2159342.
@article{osti_20729237,
title = {Multiwire X Pinches on the COBRA Pulsed Power Generator},
author = {Shelkovenko, Tatiana A. and Pikuz, Sergey A. and Douglass, Jonathan D. and McBride, Ryan D. and Hammer, David A.},
abstractNote = {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 {mu}m of several different wire materials (from Al to W) have been studied. The influence of different current shapes on X pinch plasma formation and pinch implosion dynamics has been studied using a set of diagnostics with spatial and/or temporal resolution. Multiwire X pinches were placed in the diode center and/or two four wire X pinches were places in one of four parallel return current circuits of the diode. Radiographic images of different test objects, wires in the array and the X pinches, themselves, were obtained with {mu}m scale spatial resolution.},
doi = {10.1063/1.2159342},
journal = {AIP Conference Proceedings},
number = 1,
volume = 808,
place = {United States},
year = {Thu Jan 05 00:00:00 EST 2006},
month = {Thu Jan 05 00:00:00 EST 2006}
}
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