Warm-dense-matter studies using pulse-powered wire discharges in 
water

Sasaki, Toru; Yano, Yuuri; Nakajima, Mitsuo; Kawamura, Tohru; Horioka, Kazuhiko

doi:10.1017/s0263034606060538

Cited by 60 publications

(23 citation statements)

References 31 publications

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“…The evolutions of wire/plasma boundary and the shock wave are measured with fast streak/framing camera. From these measurements, electrical conductivities of exploding plasma can be directly estimated (3) . Figure 1 shows the evolution of electrical conductivities of aluminum (Al), copper (Cu), and tungsten (W) wires, during the pulse powered explosion.…”

Section: Thin Wire Explosion In Watermentioning

confidence: 99%

Pulse-Power Device as a Tool for High-Energy-Density Plasma Physics and its Applications

Horioka

2007

IEEJ Trans. FM

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High energy density plasmas driven by pulse power devices are of interest from the point view of their application to formations of extreme conditions. Dense plasmas are produced using pulse-power driven exploding wire discharges in water. Experimental results show that the plasma is tamped and stabilized by the surrounding water and it cylindrically evolves through a strongly coupled state. A shock-heated, high temperature plasma is produced in a compact pulse power device. Results show that extremely strong shock waves can be produced in the device. At low initial pressure condition, the shock Mach number reaches 250 that exceed well a criterion of radiative shock waves.

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Section: Thin Wire Explosion In Watermentioning

confidence: 99%

Pulse-Power Device as a Tool for High-Energy-Density Plasma Physics and its Applications

Horioka

2007

IEEJ Trans. FM

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“…To create and to characterize properly the WDM condition are difficult in a laboratory. For this reason, electrical conductivity in the WDM region is unclear [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of electrical conductivity for copper foam/plasma using isochoric pulsed-power discharge

Amano

Miki

Takahashi

et al. 2013

EPJ Web of Conferences

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Abstract. Electrical conductivity in warm dense state has been evaluated by using isochoric pulsed-power discharge. The isochoric heating can be achieved by surrounding the foamed metal with a sapphire capillary as a rigid wall. The electrical conductivity and the temperature of copper foam/plasma have been evaluated by the applied voltage-current waveform and emission intensity. Observed electrical conductivity and foam/plasma temperature is about 10 4 S/m and 4000 K in 0.10 s .

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“…This expansion velocity is almost two orders of magnitude lower than the plasma expansion velocity in the case of a wire explosion in vacuum [11]. Therefore, due to the high current magnitude and high plasma density U developed in an underwater plasma channel, the equation of state of the warm dense matter formed in the breakdown channel, and the electrical conductivity of this matter, can be obtained and investigated [12]. Although wire-guided underwater discharges have been intensively studied for several decades, there is a lack of understanding of the relationships between their electrical, hydrodynamic and acoustic parameters.…”

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confidence: 99%

“…For example, fast electrical disintegration of metallic conductors in water can be used for fabrication of nanomaterials (metallic and metal oxide nanoparticles) [9], and for generation of high residual stresses in metallic parts [10]. Underwater wire-guided discharges are used in investigation of the conductivity and equations of state of warm dense matter [11,12]. Water has low compressibility, which results in slow radial expansion of the plasma developed in the initial stage of the underwater wire discharge, 10 5 cm/s.…”

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confidence: 99%

Electrical and Acoustic Parameters of Wire-Guided Discharges in Water: Experimental Determination and Phenomenological Scaling

Timoshkin

MacGregor

Wilson

et al. 2017

IEEE Trans. Plasma Sci.

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This version is available at https://strathprints.strath.ac.uk/61585/ Strathprints is designed to allow users to access the research output of the University of Strathclyde. Unless otherwise explicitly stated on the manuscript, Copyright © and Moral Rights for the papers on this site are retained by the individual authors and/or other copyright owners. Please check the manuscript for details of any other licences that may have been applied. You may not engage in further distribution of the material for any profitmaking activities or any commercial gain. You may freely distribute both the url (https://strathprints.strath.ac.uk/) and the content of this paper for research or private study, educational, or not-for-profit purposes without prior permission or charge.Any correspondence concerning this service should be sent to the Strathprints administrator: strathprints@strath.ac.ukThe Strathprints institutional repository (https://strathprints.strath.ac.uk) is a digital archive of University of Strathclyde research outputs. It has been developed to disseminate open access research outputs, expose data about those outputs, and enable the management and persistent access to Strathclyde's intellectual output. Abstract-The present paper is focused on investigation of the electrical, hydrodynamic and acoustic parameters of underwater plasma discharges, stabilized with thin copper wires. The experimental current and acoustic waveforms have been obtained using different combinations of the circuit capacitance, charging voltage and wire length. The resistances of plasma discharges have been calculated for all combinations of electrical and topological parameters, based on the constant resistance approach. Phenomenological scaling relationships that link the plasma resistance and the total energy delivered to the plasma, the period of discharge cavity oscillation and the peak magnitude of the acoustic impulse have been obtained. These relationships can be used in optimization of the acoustic output from the wire-guided discharges for different practical applications.

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Warm-dense-matter studies using pulse-powered wire discharges in water

Cited by 60 publications

References 31 publications

Pulse-Power Device as a Tool for High-Energy-Density Plasma Physics and its Applications

Pulse-Power Device as a Tool for High-Energy-Density Plasma Physics and its Applications

Evaluation of electrical conductivity for copper foam/plasma using isochoric pulsed-power discharge

Electrical and Acoustic Parameters of Wire-Guided Discharges in Water: Experimental Determination and Phenomenological Scaling

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