Electrical conductivity of dense copper and aluminum plasmas

DeSilva, A.W.; Katsouros, J. D.

doi:10.1103/physreve.57.5945

Cited by 227 publications

(141 citation statements)

References 11 publications

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“…The electrical conductivity of copper foam/plasma is estimated to be about 10 4 S/m. The observed electrical conductivity is in agreement with the other experiments [2,9] and predictions [5]. Figure 3 shows the electrical conductivity of copper as a function of temperature in case of 0.10 s , 0.054 s , and 0.032 s .…”

Section: Epj Web Of Conferencessupporting

confidence: 79%

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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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Section: Epj Web Of Conferencessupporting

confidence: 79%

“…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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show abstract

“…Conductivity is influenced by intrinsic material properties such as the electronic structure, nature of bonding [28], presence of defects [29], grain size, stoichiometry, relative density, crystallinity and level of Figure 3. The temperature-dependence of conductivity of typical metallic, semiconductor (narrow and wide band gap) and ionic conductor, W (T m = 3380°C) [21], Cu (T m = 1084°C) [22], B 4.3 C (T m* = 2447°C) [23], SiC (T m* = 2730°C, 3.1 eV) [24], YSZ (T m ≈ 2700°C) [25], BaTiO 3 (T m = 1618°C, 1.55 eV) [26], Al 2 O 3 (T m = 2050°C) [27]. Colour coded: metals (grey), semiconductors (green), oxygen ion conductors (blue) and insulating oxides (red).…”

Section: Fs: Family Of Materials With Different Conductivity Modes (Ementioning

confidence: 99%

Review of flash sintering: materials, mechanisms and modelling

Grasso

McKinnon

et al. 2016

Advances in Applied Ceramics

394

248

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Flash sintering (FS) is an energy efficient sintering technique involving electrical Joule heating, which allows very rapid densification (<60 s) of particulate materials. Since the first publication on flash-sintered zirconia (3YSZ) in 2010, it has been intensively researched and applied to a wide range of materials. Going back more than a century ago, we have found a close similarity between FS of oxides and Nernst glowers developed in 1897. This review provides a comprehensive overview of FS and is based on a literature survey consisting of 88 papers and seven patents. It correlates processing parameters (i.e. electric field magnitude, current density, waveforms (AC, DC) and frequency, furnace temperature, electrode materials/ configuration, externally applied pressure and sintering atmosphere) with microstructures and densification mechanisms. Theorised mechanisms driving the rapid densification are substantiated by modelling work, advanced in situ analysis techniques and by established theories applied to electric current assisted/activated sintering techniques. The possibility of applying FS to a wider range of materials and its implementation in industrial scale processes are discussed.

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“…By comparing with experimental data, these simulations have shown that the standard conductivity model found in the SESAME library [8] is not very accurate for this parameter range, often differing from the data by several orders of magnitude. We have recently developed a modified algorithm that smoothly blends into the standard Lee-More results outside this regime, but is modified to give good agreement with recent data for Cu, Al, and W from experiments performed by DeSilva [10]. A set of constant-temperature conductivity curves for copper calculated by this algorithm is shown in Figure 5.…”

Section: Powerflow Issues 'mentioning

confidence: 84%

The role of strong coupling in z-pinch-driven approaches to high yield inertial confinement fusion

et al. 2000

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Abstract. Peakx-ray powers as high as 280k40 TW have been generated from the implosion of tungsten wire arrays on the Z Accelerator at Sandia National Laboratories. The high x-ray powers radiated by these z-pinches provide an attractive new driver option for high yield inertial confinement fusion (ICF). The high x-ray powers appear to be a result of using a large number of wires in the array which decreases the perturbation seed to the magnetic RayleighTaylor (MRT) instability and diminishes other 3-D effects. Simulations tQ confirm this hypothesis require a 3-D MHD code capability, and associated databases, to follow the evolution of the wires from cold solid through melt, vaporization, ionization, and finally to dense imploded plasma. Strong coupling plays a role in this process, the importance of which depends on the wire material and the current time history of the pulsed power driver. Strong coupling regimes are involved in the plasmas in the convolute and transmission line of the powerflow system. Strong coupling can also play a role in the physics of the z-pinch-driven high yield ICF target. Finally, strong coupling can occur in certain z-pinch-driven application experiments.

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Electrical conductivity of dense copper and aluminum plasmas

Cited by 227 publications

References 11 publications

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

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

Review of flash sintering: materials, mechanisms and modelling

The role of strong coupling in z-pinch-driven approaches to high yield inertial confinement fusion

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