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Title: Investigation of regimes of wire array implosion on the 1 MA Zebra accelerator

Abstract

Implosion of wire arrays was investigated at the 1 MA Zebra accelerator by multiframe laser probing and gated x-ray self-emission diagnostics. Different regimes of implosion were observed in Al and Cu wire arrays. Implosion of Al loads with masses of 33-37 {mu}g/cm produces a dense pinch 1-1.5 mm in diameter. Strong instabilities are observed in the Z pinch at the time of stagnation. Implosion of ''overmassed'' loads produces a plasma column 3-4 mm in diameter with a core. The plasma column does not collapse during the x-ray pulse. The core of the plasma column is not subjected to the kink instability and transforms to a chain of dense spots in the later stage. Different regimes of implosion were observed in Al 8x15 {mu}m loads presumably due to variations in the current pulse and load conditions. Observed regimes are compared to three-dimensional hybrid simulation of ideal and nonideal magnetohydrodynamics modes of implosion.

Authors:
; ; ; ; ; ; ; ; ; ; ; ;  [1];  [2];  [2]
  1. University of Nevada, Reno, 5625 Fox Avenue, Reno, Nevada 89506 (United States)
  2. (United States)
Publication Date:
OSTI Identifier:
20782460
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 13; Journal Issue: 1; Other Information: DOI: 10.1063/1.2163334; (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; ACCELERATORS; ALUMINIUM; COMPUTERIZED SIMULATION; COPPER; EXPLODING WIRES; IMPLOSIONS; KINK INSTABILITY; LASERS; MAGNETOHYDRODYNAMICS; PLASMA; PLASMA DIAGNOSTICS; PLASMA SIMULATION; PULSES; THREE-DIMENSIONAL CALCULATIONS; VARIATIONS; X RADIATION; X-RAY SOURCES

Citation Formats

Ivanov, V.V., Kantsyrev, V.L., Sotnikov, V.I., Fedin, D.A., Astanovitskiy, A. L., Le Galloudec, B., Nalajala, V., Shrestha, I., Cowan, T.E., Jones, B., Coverdale, C. A., Deeney, C., LePell, P.D., Sandia National Laboratories, Albuquerque, New Mexico 87110, and Ktech Corporation, Albuquerque, New Mexico 87123. Investigation of regimes of wire array implosion on the 1 MA Zebra accelerator. United States: N. p., 2006. Web. doi:10.1063/1.2163334.
Ivanov, V.V., Kantsyrev, V.L., Sotnikov, V.I., Fedin, D.A., Astanovitskiy, A. L., Le Galloudec, B., Nalajala, V., Shrestha, I., Cowan, T.E., Jones, B., Coverdale, C. A., Deeney, C., LePell, P.D., Sandia National Laboratories, Albuquerque, New Mexico 87110, & Ktech Corporation, Albuquerque, New Mexico 87123. Investigation of regimes of wire array implosion on the 1 MA Zebra accelerator. United States. doi:10.1063/1.2163334.
Ivanov, V.V., Kantsyrev, V.L., Sotnikov, V.I., Fedin, D.A., Astanovitskiy, A. L., Le Galloudec, B., Nalajala, V., Shrestha, I., Cowan, T.E., Jones, B., Coverdale, C. A., Deeney, C., LePell, P.D., Sandia National Laboratories, Albuquerque, New Mexico 87110, and Ktech Corporation, Albuquerque, New Mexico 87123. Sun . "Investigation of regimes of wire array implosion on the 1 MA Zebra accelerator". United States. doi:10.1063/1.2163334.
@article{osti_20782460,
title = {Investigation of regimes of wire array implosion on the 1 MA Zebra accelerator},
author = {Ivanov, V.V. and Kantsyrev, V.L. and Sotnikov, V.I. and Fedin, D.A. and Astanovitskiy, A. L. and Le Galloudec, B. and Nalajala, V. and Shrestha, I. and Cowan, T.E. and Jones, B. and Coverdale, C. A. and Deeney, C. and LePell, P.D. and Sandia National Laboratories, Albuquerque, New Mexico 87110 and Ktech Corporation, Albuquerque, New Mexico 87123},
abstractNote = {Implosion of wire arrays was investigated at the 1 MA Zebra accelerator by multiframe laser probing and gated x-ray self-emission diagnostics. Different regimes of implosion were observed in Al and Cu wire arrays. Implosion of Al loads with masses of 33-37 {mu}g/cm produces a dense pinch 1-1.5 mm in diameter. Strong instabilities are observed in the Z pinch at the time of stagnation. Implosion of ''overmassed'' loads produces a plasma column 3-4 mm in diameter with a core. The plasma column does not collapse during the x-ray pulse. The core of the plasma column is not subjected to the kink instability and transforms to a chain of dense spots in the later stage. Different regimes of implosion were observed in Al 8x15 {mu}m loads presumably due to variations in the current pulse and load conditions. Observed regimes are compared to three-dimensional hybrid simulation of ideal and nonideal magnetohydrodynamics modes of implosion.},
doi = {10.1063/1.2163334},
journal = {Physics of Plasmas},
number = 1,
volume = 13,
place = {United States},
year = {Sun Jan 15 00:00:00 EST 2006},
month = {Sun Jan 15 00:00:00 EST 2006}
}