“Water bath” effect during the electrical underwater wire explosion

Oreshkin, V. I.; Chaikovsky, S. A.; Ratakhin, N. A.; Grinenko, A.; Krasik, Ya. E.

doi:10.1063/1.2789990

Cited by 39 publications

(15 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…First, let us estimate the temperature of water using data obtained by the PMTs with interference filters and assuming BB radiation gives a value 0.45 eV, which is significantly smaller than that of the simulation results. This apparent contradiction can be explained by the opaque effect of the surrounding "cold" plasma shell, similar to that analyzed in the research of light emission radiated by the exploding wire 15,16 or by the water compressed by cylindrically converging SSW. 11 Nevertheless, assuming that a temperature of 0.45 eV is reached at the front of the SSW prior to the implosion and using the SES-AME database, one obtains a pressure $10 11 Pa.…”

mentioning

confidence: 73%

Generation of extreme state of water by spherical wire array underwater electrical explosion

et al. 2012

Self Cite

View full text Add to dashboard Cite

The results of the first experiments on the underwater electrical explosion of a spherical wire array generating a converging strong shock wave are reported. Using a moderate pulse power generator with a stored energy of ≤6 kJ and discharge current of ≤500 kA with a rise-time of ∼300 ns, explosions of Cu and Al wire arrays of different diameters and with a different number and diameter of wires were tested. Electrical, optical, and destruction diagnostics were used to determine the energy deposited into the array, the time-of-flight of the shock wave to the origin of the implosion, and the parameters of water at that location. The experimental and numerical simulation results indicate that the convergence of the shock wave leads to the formation of an extreme state of water in the vicinity of the implosion origin that is characterized by pressure, temperature, and compression factors of (2 ± 0.2) × 1012 Pa, 8 ± 0.5 eV, and 7 ± 0.5, respectively.

show abstract

mentioning

confidence: 73%

Generation of extreme state of water by spherical wire array underwater electrical explosion

et al. 2012

Self Cite

View full text Add to dashboard Cite

show abstract

“…The authors of this review used the BKL method and experimental data on WEs in water to compile conductivity tables for aluminum, copper, and tungsten [18], [38], [98]. The procedure of compiling these tables is described in detail in [18].…”

Section: B Transport Properties Of Metalsmentioning

confidence: 99%

“…The electrically exploding conductors also vary in geometry: these can be microwires [15], [16], crossed wires (X-pinch assemblies) [20]- [24], plane conductors (foils) [25]- [29], wire arrays, both cylindrical [30], [31] and planar [32], [33], solenoids [34], etc. According to the environment in which an explosion occurs, it is customary to distinguish the WEs in vacuum [11]- [15] and in a dielectric medium (in a gas [35], [36] or in a liquid [37], [38]), and the explosion of dielectric-coated wires [39]. And this is not a complete list of the parameters by which various WE regimes can be classified.…”

Section: Introductionmentioning

confidence: 99%

Wire Explosion in Vacuum

Oreshkin

Baksht

2020

IEEE Trans. Plasma Sci.

View full text Add to dashboard Cite

This article presents a review of experimental and theoretical studies devoted to the processes that occur during explosions of wires in vacuum when the current densities in the wire are of the order of 10 8 A/cm 2 and the current density rise rates are no less than 10 15 A/(cm 2 • s). The theoretical background is focused on the transformation of the wire metal into ionized plasma. In particular, the basic physical notions used to describe wire explosions (WEs; state diagram, current action integral, and metal conductivity changes in phase transitions) are given; magnetohydrodynamic equations are described which are used to simulate WEs, and the simulation predictions are discussed together with their reliability. Extensive experimental data on WEs in vacuum are presented which made it possible to describe the corona and core formation and the development of electrothermal instabilities in the core. The data on the energy deposited in a wire exploding in vacuum reported by different authors are compared. In conclusion, problems are discussed that require additional experimental investigations, namely, the role of metastable states in a WE and the mechanism by which the core is shunted.

show abstract

“…We simulated an explosion in terms of a single temperature magnetohydrodynamic (MHD) approxi mation using the MHD EXWIRE software package [7,8]. In the case of cylindrical geometry, MHD equa tions have the form…”

Section: Simulation Of An Explosionmentioning

confidence: 99%

Phase transformations of carbon under extreme energy action

et al. 2012

Self Cite

View full text Add to dashboard Cite

Experiments are performed on a high current MIG generator (current amplitude 2.5 MA, current rise time 100 ns) to synthesize diamond like carbon forms. Magnetohydrodynamic calculations carried out before the experiments show that the conditions required for synthesizing diamond like structures appear during the compression of copper tubes 2-4 mm in diameter filled with graphite. The explosion products are analyzed on an EM 125 diffraction transmission electron microscope. During an explosion, the entire graph ite is found to transform into cubic carbon: crystals with the simple cubic lattice and a lattice parameter a = 0.5545 nm and with the face centered cubic lattice and a = 0.3694 nm are detected. The crystallite size is 5-25 nm.

show abstract

“Water bath” effect during the electrical underwater wire explosion

Cited by 39 publications

References 27 publications

Generation of extreme state of water by spherical wire array underwater electrical explosion

Generation of extreme state of water by spherical wire array underwater electrical explosion

Wire Explosion in Vacuum

Phase transformations of carbon under extreme energy action

Contact Info

Product

Resources

About