Measurement of the electric conductivity of tungsten in a continuous liquid-to-gas transition

Korobenko, V. N.; Rakhel, A. D.; Savvatimskiy, A. I.; Фортов, В. Е.

doi:10.1134/1.1528231

Cited by 24 publications

(45 citation statements)

References 13 publications

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“…The variation of temperature measured into [5] is also plotted. The lines with symbols are results of wire explosion measurements (resistivity) and calculations of MHD task for this process (density, temperature) [6]. The errors of this measurements is about 10 %.…”

Section: Resultsmentioning

confidence: 99%

“…The lowest energy, obtained by solution of Schrödiger equation with potential (2), must be equal to the ionization potential of real ion or atom; i.e., if the real ion charge is Z (do not mix with Z 1 and Z * ) then ionization potential corresponds to ion with charge Z − 1 (or atom) [7]. For complete definition of the potential parameters and choice of Z we varied the ionization potential and found the minimum of free energy (6). Defining A and r 0 , we calculated all necessary values according to (2)-(5), and after that conductivity was calculated by (1).…”

Section: Theorymentioning

confidence: 99%

“…During the last decade there also were carried out some conductivity measurements of non-alkali metals [4,5,6]. In the process of measurements the metal in hand changed from solid state to plasma.…”

Section: Introductionmentioning

confidence: 99%

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The calculation of metal conductivity in the process of transition from liquid to plasma

Apfelbaum¹

2004

Czech. J. Phys.

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Section: Resultsmentioning

confidence: 99%

Section: Theorymentioning

confidence: 99%

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The calculation of metal conductivity in the process of transition from liquid to plasma

Apfelbaum¹

2004

Czech. J. Phys.

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“…The specific conductivity of plasma when being heated fell down from 100 to 10 µΩ.cm. The interpretation of the experimentally observed dense formations of tungsten in the form of a non-equilibrium mixture of liquid drops and gas (plasma) described by the system (1-4) corresponds with the duration of the plasma production process in the wire array, in spite of significant simplifications of the complicated picture of phenomena occurred in the near-critical point [39,40]. The total evaporation of the liquid phase on the periphery of liner, due to Ohmic heating by 80 ns (Fig.…”

Section: Dense Cores At a Developed Discharge Stagementioning

confidence: 99%

Heterogeneous Plasma‐Producing Structures at Current Implosion of a Wire Array

Grabovsky

Mitrofanov

Nedoseev

et al. 2005

Contrib. Plasma Phys.

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Characteristic properties of the plasma production process have been considered for the case of megampere currents flowing through hollow cylindrical wire arrays of the Angara-5-1 facility. In 3-4 nanoseconds after voltage applying to the wire surfaces there appear a plasma layer. The system becomes heterogeneous, i.e. consisting of a kernel of metal wires and a plasma layer. In several nanoseconds the current flow goes from metal to plasma, which results in reducing the electric field strength along the wire.The Joule heat energy delivered to the metal before the moment of complete current trapping by plasma is insufficient for the whole mass transition to a hot plasma state. The X-ray radiography techniques made it possible to detect and study dense clusters of substance of ∼1g/cm 3 at a developed discharge stage. The radial expansion velocity of ∼10 4 cm/s measured at the 70-th nanosecond after the current start allows treating the dense core at a late stage in the form of a submicron heterogeneous structure from its liquid and slightly ionized gas phase.

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“…Electric explosion of wires is one of the applications of non-ideal (strongly coupled) plasma [1,2,3,4,5,6] and on the other hand is an important means of nonideal plasma generation [7,8,9]. Nowadays timescales of electric explosion of metal wires cover the region from micro-to nanoseconds.…”

Section: Introductionmentioning

confidence: 99%

Nanosecond electric explosion of wires: from solid superheating to nonideal plasma formation

Norman

Stegaĭlov

Valuev

2003

Contrib. Plasma Phys.

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The conception is developed which distinguishes initial stages of the fast (nanosecond) electric explosion of wires: the superheating of the solid conductor, its spontaneous (spinodal) decay and the successive formation of the nonideal plasma column. The molecular dynamics simulation approach is used to simulate homogeneous nucleation at a constant heating rate. The subsequent evolution of the fluid column and the axial plasma uniformity are considered. The results are compared with the experimental data on nanosecond wire explosions.

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Measurement of the electric conductivity of tungsten in a continuous liquid-to-gas transition

Cited by 24 publications

References 13 publications

The calculation of metal conductivity in the process of transition from liquid to plasma

The calculation of metal conductivity in the process of transition from liquid to plasma

Heterogeneous Plasma‐Producing Structures at Current Implosion of a Wire Array

Nanosecond electric explosion of wires: from solid superheating to nonideal plasma formation

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