Controlling Rayleigh-Taylor Instabilities in Magnetically Driven Solid Metal Shells by Means of a Dynamic Screw Pinch

Schmit, Paul; Velikovich, A. L.; McBride, R. D.; Robertson, G. K.

doi:10.1103/physrevlett.117.205001

Cited by 25 publications

(6 citation statements)

References 70 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To mitigate the MRT instability, a novel dynamic screw pinch (DSP) [91,92] concept was designed [93] and recently implemented on Z experiments. In a DSP system, a dynamically rotating helical magnetic drive field is generated by modifying the return current structure into discrete, helical posts.…”

Section: Instability Developmentmentioning

confidence: 99%

“…As the liner implodes, the self-generated azimuthal magnetic field component increases with respect to the axial field component generated by the quasi-solenoidal helical return posts, causing the drive field and associated stabilizing magnetic tension on the surface of the liner to rotate in-flight. When the linear theory is applied to Z relevant targets [91], the total number of instability e-foldings is reduced for a wide variety of azimuthal and axial modes. In particular, the smaller wavelength modes (e.g.…”

Section: Instability Developmentmentioning

confidence: 99%

See 1 more Smart Citation

An overview of magneto-inertial fusion on the Z machine at Sandia National Laboratories

et al. 2022

View full text Add to dashboard Cite

We present an overview of the magneto-inertial fusion (MIF) concept Magnetized Liner Inertial Fusion (MagLIF) pursued at Sandia National Laboratories and review some of the most prominent results since the initial experiments in 2013. In MagLIF, a centimeter-scale beryllium tube or ‘liner’ is filled with a fusion fuel, axially pre-magnetized, laser pre-heated, and finally imploded using up to 20 MA from the Z machine. All of these elements are necessary to generate a thermonuclear plasma: laser preheating raises the initial temperature of the fuel, the electrical current implodes the liner and quasi-adiabatically compresses the fuel via the Lorentz force, and the axial magnetic field limits thermal conduction from the hot plasma to the cold liner walls during the implosion. MagLIF is the first MIF concept to demonstrate fusion relevant temperatures, significant fusion production (>1013 primary DD neutron yield), and magnetic trapping of charged fusion particles. On a 60 MA next-generation pulsed-power machine, two-dimensional simulations suggest that MagLIF has the potential to generate multi-MJ yields with significant self-heating, a long-term goal of the US Stockpile Stewardship Program. At currents exceeding 65 MA, the high gains required for fusion energy could be achievable.

show abstract

Section: Instability Developmentmentioning

confidence: 99%

Section: Instability Developmentmentioning

confidence: 99%

An overview of magneto-inertial fusion on the Z machine at Sandia National Laboratories

et al. 2022

View full text Add to dashboard Cite

show abstract

“…The study of RT instability in materials is important for a number of technical applications, such as processing new materials, molding metal products, explosive welding, etc. RT instability is also an important process of supernova explosion and galaxy evolution, which is the focus of inertial confinement fusion and implosion compression research [3][4][5][6][7]. The small initial perturbation on the metal interface will increase with time under certain loading.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Rayleigh-Taylor instability in copper plate under explosive loading

et al. 2021

View full text Add to dashboard Cite

The Rayleigh-Taylor instability in metal is of great practical interest to a diverse range of fields, and it is significantly different from the traditional fluid interface instability. In this paper, a set of high explosives driven Rayleigh-Taylor instability experiments in copper plate are presented for intensively understanding the perturbation growth behavior of metal interface instability. The perturbation growth history on copper interface at a specific time is recorded by flash radiography. The experimental results show that the evolution of interface perturbation is sensitive to its initial perturbation characters under a given driving pressure, the larger the initial perturbation amplitude, the faster the perturbation grows, but the perturbation wavelength of the interface remains almost unchanged at the explosive loading. The perturbation on the front interface will influence the interface features of the back free interface over time. Namely, the position corresponding to the perturbation trough on the front interface gradually evolves into a peak and vice versa.

show abstract

“…Inertial confinement fusion [1] (ICF) has been actively pur sued in laboratories for decades as a viable way to generate clean energy for the future. Three ICF approaches are cur rently being pursued in the U.S., including laser indirect drive [2,3], laser direct drive [4,5], and magnetized liner inertial fusion (MagLIF) [6,7]. For the conventional laser based 'hotspot' ignition designs, ICF capsules, consisting of a solid deuterium-tritium (DT) layer covered by an ablator, are driven to implode either by laserproduced thermal x rays in a hohlraum [2,3] or directly by laser illumination [4,5].…”

Section: Introductionmentioning

confidence: 99%

Microphysics studies for direct-drive inertial confinement fusion

Goncharov

Radha

et al. 2018

Nucl. Fusion

View full text Add to dashboard Cite

Accurate and self-consistent knowledge of material properties under high-energy-density (HED) conditions is crucial to reliably understand and design inertial confinement fusion (ICF) targets through radiation–hydrodynamic simulations. For direct-drive ICF target designs, the fuel deuterium–tritium mixtures and ablator materials can undergo a wide range of density and temperature conditions. Their properties under extreme HED conditions, including the equation of state, thermal conductivity, opacity, and stopping power, are the necessary inputs for ICF simulations. To improve the predictive capability of radiation–hydrodynamic codes for direct-drive ICF simulations, we have performed systematic ab initio studies on the static, transport, and optical properties of deuterium (D2) and ablator materials such as polystyrene (CH), beryllium (Be), and silicon (Si), using first-principles methods. The obtained material properties, being favorably compared with existing experimental data, have been implemented into radiation–hydrodynamic codes. This article gives a brief review on how these microphysics studies affect the 1D radiation–hydrodynamic predictions of direct-drive ICF implosions on the OMEGA Laser System.

show abstract

Controlling Rayleigh-Taylor Instabilities in Magnetically Driven Solid Metal Shells by Means of a Dynamic Screw Pinch

Cited by 25 publications

References 70 publications

An overview of magneto-inertial fusion on the Z machine at Sandia National Laboratories

An overview of magneto-inertial fusion on the Z machine at Sandia National Laboratories

Investigation of Rayleigh-Taylor instability in copper plate under explosive loading

Microphysics studies for direct-drive inertial confinement fusion

Contact Info

Product

Resources

About