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Title: Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions

Abstract

We present herein the first use of synchrotron-based phase contrast radiography to study pulsed-power driven high energy density physics experiments. Underwater electrical wire explosions have become of interest to the wider physics community due to their ability to study material properties at extreme conditions and efficiently couple stored electrical energy into intense shock waves in water. The latter can be shaped to provide convergent implosions, resulting in very high pressures (1-10 Mbar) produced on relatively small pulsed power facilities (100s of kA-MA). Multiple experiments have explored single-wire explosions in water, hoping to understand the underlying physics and better optimize this energy transfer process; however, diagnostics can be limited. Optical imaging diagnostics are usually obscured by the shock wave itself; and until now, diode-based X-ray radiography has been of relatively low resolution and rather a broad x-ray energy spectrum. Utilising phase contrast imaging capabilities of the ID19 beamline at the European Synchrotron Radiation Facility, we were able to image both the exploding wire and the shock wave. Probing radiation of 20-50 keV radiographed 200 μm tungsten and copper wires, in ~2-cm diameter water cylinders with resolutions of 8 μm and 32 μm. The wires were exploded by a ~30-kA, 500-ns compactmore » pulser, and 128 radiographs, each with a 100-ps X-ray pulse exposure, spaced at 704 ns apart were taken in each experiment. Abel inversion was used to obtain the density profile of the wires, and the results are compared to two dimensional hydrodynamic and one dimensional magnetohydrodynamic simulations.« less

Authors:
 [1]; ORCiD logo [2];  [1]; ORCiD logo [1]; ORCiD logo [2];  [3]; ORCiD logo [3]
  1. Imperial College, London (United Kingdom)
  2. Technion - Israel Inst. of Technology, Haifa (Israel)
  3. European Synchrotron Radiation Facility (ESRF), Grenoble (France)
Publication Date:
Research Org.:
Cornell Univ., Ithaca, NY (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA); Engineering and Physical Sciences Research Council (EPSRC)
OSTI Identifier:
1614419
Alternate Identifier(s):
OSTI ID: 1477905
Grant/Contract Number:  
NA0003764; SC0018088; NA0003764,SC0018088
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 124; Journal Issue: 15; Journal ID: ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; Physics; Synchrotrons; Integral transforms; Electrical energy; Hydrodynamics simulations; Shock waves; Exploding wire method; Radiography

Citation Formats

Yanuka, D., Rososhek, A., Theocharous, S., Bland, S. N., Krasik, Ya. E., Olbinado, M. P., and Rack, A. Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions. United States: N. p., 2018. Web. doi:10.1063/1.5047204.
Yanuka, D., Rososhek, A., Theocharous, S., Bland, S. N., Krasik, Ya. E., Olbinado, M. P., & Rack, A. Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions. United States. https://doi.org/10.1063/1.5047204
Yanuka, D., Rososhek, A., Theocharous, S., Bland, S. N., Krasik, Ya. E., Olbinado, M. P., and Rack, A. Wed . "Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions". United States. https://doi.org/10.1063/1.5047204. https://www.osti.gov/servlets/purl/1614419.
@article{osti_1614419,
title = {Multi frame synchrotron radiography of pulsed power driven underwater single wire explosions},
author = {Yanuka, D. and Rososhek, A. and Theocharous, S. and Bland, S. N. and Krasik, Ya. E. and Olbinado, M. P. and Rack, A.},
abstractNote = {We present herein the first use of synchrotron-based phase contrast radiography to study pulsed-power driven high energy density physics experiments. Underwater electrical wire explosions have become of interest to the wider physics community due to their ability to study material properties at extreme conditions and efficiently couple stored electrical energy into intense shock waves in water. The latter can be shaped to provide convergent implosions, resulting in very high pressures (1-10 Mbar) produced on relatively small pulsed power facilities (100s of kA-MA). Multiple experiments have explored single-wire explosions in water, hoping to understand the underlying physics and better optimize this energy transfer process; however, diagnostics can be limited. Optical imaging diagnostics are usually obscured by the shock wave itself; and until now, diode-based X-ray radiography has been of relatively low resolution and rather a broad x-ray energy spectrum. Utilising phase contrast imaging capabilities of the ID19 beamline at the European Synchrotron Radiation Facility, we were able to image both the exploding wire and the shock wave. Probing radiation of 20-50 keV radiographed 200 μm tungsten and copper wires, in ~2-cm diameter water cylinders with resolutions of 8 μm and 32 μm. The wires were exploded by a ~30-kA, 500-ns compact pulser, and 128 radiographs, each with a 100-ps X-ray pulse exposure, spaced at 704 ns apart were taken in each experiment. Abel inversion was used to obtain the density profile of the wires, and the results are compared to two dimensional hydrodynamic and one dimensional magnetohydrodynamic simulations.},
doi = {10.1063/1.5047204},
url = {https://www.osti.gov/biblio/1614419}, journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 15,
volume = 124,
place = {United States},
year = {2018},
month = {10}
}

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Cited by: 10 works
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Works referenced in this record:

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    Works referencing / citing this record:

    Use of synchrotron-based radiography to diagnose pulsed power driven wire explosion experiments
    journal, January 2019


    Synchrotron based X-ray radiography of convergent shock waves driven by underwater electrical explosion of a cylindrical wire array
    journal, March 2019


    X-ray radiography of the overheating instability in underwater electrical explosions of wires
    journal, May 2019


    Numerical investigation of shock wave characteristics at microsecond underwater electrical explosion of Cu wires
    journal, July 2019


    Effects of water states on the process of underwater electrical wire explosion under micro-second timescale pulsed discharge
    journal, January 2020