On the feasibility to achieve high pressures with disk EMG driven impacting liners

Buyko, A.M.; Burenkov, O.M.; Zmushko, V.V.; Ivanova, G.G.; Mokhov, V.N.; Nizovtsev, P. N.; Sokolova, N. V.; Solovyev, V. P.; Sofronov, V.N.; Yakubov, V.B.

doi:10.1109/ppps.2001.1002146

Cited by 10 publications

(9 citation statements)

References 3 publications

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“…The temperature of the liner was set equal to room temperature T = 293 K, and the normal density ρ = 2.7 g/cm 3 .…”

Section: Results Of One-dimensional Calculationsmentioning

confidence: 99%

“…Using condensed liners accelerated by powerful pulsed facilities in Z-pinch geometry is an important line of research [1][2][3][4]. Such liners are used in measurement of shock adiabat of condensed materials [2,3]; in studies of the isentropic compression of materials; in studies of the dynamic strength characteristics of various materials based on measuring perturbation amplitudes in accelerated liners [4]; in modeling the operation of various devices and their fragments at high velocities and pressures; in studies of gravitational turbulent mixing of accelerated materials with various density at their interface.…”

Section: Introductionmentioning

confidence: 99%

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On stabilization of implosion of condensed liners

Buiko¹,

Garanin²,

Zmushko³

et al. 2009

J Appl Mech Tech Phy

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This paper considers various experimental designs on the Atlas facility to study the physics of liners and determine the optimum conditions of their stable motion. In one of the versions, in comparison with the Liner Demonstration series of experiments, in which unstable liner motion was observed, it is proposed to reduce the initial liner radius without changing its mass, which, according to twodimensional calculations, should to lead to more stable motion of the liner with unchanged velocity. It is also proposed to perform an experiment in which periodic perturbations at a certain wavelength are created on the outer surface of the liner with a simultaneous increase in its thickness. According to calculations, the growth of chaotic perturbations is stabilized in this case with the preservation of the liner velocity.

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“…The temperature of the liner was set equal to room temperature T = 293 K, and the normal density ρ = 2.7 g/cm 3 .…”

Section: Results Of One-dimensional Calculationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

On stabilization of implosion of condensed liners

Buiko¹,

Garanin²,

Zmushko³

et al. 2009

J Appl Mech Tech Phy

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“…Magnetic implosion of cylindrical liners in the Z-pinch geo�etry is of interest for high energy density physics, in particular, for producing terapascal shock pressures in various materials [1][2][3][4]. Pulsed power drivers based on disk explosive magnetic flux compression generators (DEMG) with electrically exploded fuse opening switches (FOS), similar to the systems used in the previous experiments, can deliver up to 60-70 MA currents with a characteristic rise time of 1-2 �s, which makes it possible to accelerate up to � 20 g/cm liners to � 20 kmls [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

“…Pulsed power drivers based on disk explosive magnetic flux compression generators (DEMG) with electrically exploded fuse opening switches (FOS), similar to the systems used in the previous experiments, can deliver up to 60-70 MA currents with a characteristic rise time of 1-2 �s, which makes it possible to accelerate up to � 20 g/cm liners to � 20 kmls [2][3][4]. AI and two-layer liners are considered, which, as predicted by ID simulations, can produce up to 1-3 TPa shock pressures, when accelerated to the above velocities [3,4].…”

Section: Introductionmentioning

confidence: 99%

“…Simulations of the systems [1][2][3][4] with two types of explosive, "old" [1,2] and "new" [3,4,6], were performed using the ID(MHD)n code [7] developed based on the UP-OK technique [8]. In this code, all major units of these systems are simulated taking into account their geometry and materials by joint calculation of an arbitrary number (n) of lD MHD problems coupled by means of boundary and other conditions.…”

Section: Introductionmentioning

confidence: 99%

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A disk EMG system for driving impacting liners to ∼ 20 km/s

Buyko

Garanin

Glybin

et al. 2011

2011 IEEE Pulsed Power Conference

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We consider an ALT-l,2-like [1,2] system to deliver up to 60-70 MA currents in the liner load and accelerate �20 g/cm cylindrical liners to �20 kmls (ALT-l,2: �31 MA, � 13 g/cm, � 12 kmls). The system is intended for the ALT-3 experiment to test the efficiency of magnetic implosion of impacting liners and to verify the possibility of shock wave measurements at up to 1 TPa pressures.We describe the physical configuration of the system and its diagnostic suite, which differ significantly from similar systems [3,4]. As compared with [4], changes are made to the physical configuration of individual system units and a number of system parameters: we increase load inductance by a factor of 1.5, use a different transmission line and an AI liner (instead of envisaged two-layer liners) etc.Simulated characteristics of the system are presented.

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Stability analysis and numerical simulation of a hard-core diffusezpinch during compression with Atlas facility liner parameters

et al. 2005

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In the ‘metal liner’ approach to magnetized target fusion (MTF), a preheated magnetized plasma target is compressed to thermonuclear temperature and high density by externally driving the implosion of a flux conserving metal enclosure, or liner, which contains the plasma target. As in inertial confinement fusion, the principal fusion fuel heating mechanism is pdV work by the imploding enclosure, called a pusher in ICF. One possible MTF target, the hard-core diffuse z pinch, has been studied in MAGO experiments at VNIIEF and is one possible target being considered for experiments on the Atlas pulsed power facility. Numerical MHD simulations show two intriguing and helpful features of the diffuse z pinch with respect to compressional heating. First, in two-dimensional simulations the m = 0 interchange modes, arising from an unstable pressure profile, result in turbulent motions and self-organization into a stable pressure profile. The turbulence also gives rise to convective thermal transport, but the level of turbulence saturates at a finite level, and simulations show substantial heating during liner compression despite the turbulence. The second helpful feature is that pressure profile evolution during compression tends towards improved stability rather than instability when analysed according to the Kadomtsev criteria. A liner experiment is planned for Atlas to study compression of magnetic flux without plasma, as a first step. The Atlas geometry is compatible with a diffuse z pinch, and simulations of possible future experiments show that kiloelectronvolt temperatures and useful neutron production for diagnostic purposes should be possible if a suitable plasma injector is added to the Atlas facility.

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On the feasibility to achieve high pressures with disk EMG driven impacting liners

Cited by 10 publications

References 3 publications

On stabilization of implosion of condensed liners

On stabilization of implosion of condensed liners

A disk EMG system for driving impacting liners to ∼ 20 km/s

Stability analysis and numerical simulation of a hard-core diffusezpinch during compression with Atlas facility liner parameters

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On the feasibility to achieve high pressures with disk EMG driven impacting liners

Cited by 10 publications

References 3 publications

On stabilization of implosion of condensed liners

On stabilization of implosion of condensed liners

A disk EMG system for driving impacting liners to &#x223C; 20 km/s

Stability analysis and numerical simulation of a hard-core diffusezpinch during compression with Atlas facility liner parameters

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A disk EMG system for driving impacting liners to ∼ 20 km/s