Experimental platform for the investigation of magnetized-reverse-shock dynamics in the context of POLAR

The influence of a strong external magnetic field on the collimation of a high Mach number plasma flow and its collision with a solid obstacle is investigated experimentally and numerically. The laser irradiation ($I\sim 2\times 10^{14}~\text{W}\cdot \text{cm}^{-2}$) of a multilayer target generates a shock wave that produces a rear side plasma expanding flow. Immersed in a homogeneous 10 T external magnetic field, this plasma flow propagates in vacuum and impacts an obstacle located a few mm from the main target. A reverse shock is then formed with typical velocities of the order of 15–20 $\pm$ 5 km/s. The experimental results are compared with 2D radiative magnetohydrodynamic simulations using the FLASH code. This platform allows investigating the dynamics of reverse shock, mimicking the processes occurring in a cataclysmic variable of polar type.

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Effects of External Magnetic Field on Intensity of Plasma Flow

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.597.272 ◽

2014 ◽

Vol 597 ◽

pp. 272-275

Author(s):

Ching Yen Ho ◽

Yu Hsiang Tsai ◽

Chung Ma

Keyword(s):

Magnetic Field ◽

Steady State ◽

External Magnetic Field ◽

Plasma Flow ◽

Intensity Distribution ◽

Transverse Direction ◽

Radial Direction ◽

Intensity Profile ◽

Intensity Enhancement

This paper investigates the intensity distribution along the radial direction for plasma flow subject to external magnetic Field. The toroidal external magnetism is applied in the transverse direction of plasma flow. Considering the steady-state continuity and momentum of the plasma flow subject to external magnetic field, the intensity profile of the plasma is obtained. The results quantitatively verify the intensity enhancement of the plasma with the increasing external magnetic field.

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Kinetic simulation technique for plasma flow in strong external magnetic field

Journal of Computational Physics ◽

10.1016/j.jcp.2017.09.021 ◽

2017 ◽

Vol 351 ◽

pp. 358-375 ◽

Cited By ~ 1

Author(s):

Frans H. Ebersohn ◽

J.P. Sheehan ◽

Alec D. Gallimore ◽

John V. Shebalin

Keyword(s):

Magnetic Field ◽

External Magnetic Field ◽

Plasma Flow ◽

Simulation Technique ◽

Kinetic Simulation

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High Mach-number collisionless shock driven by a laser with an external magnetic field

EPJ Web of Conferences ◽

10.1051/epjconf/20135915004 ◽

2013 ◽

Vol 59 ◽

pp. 15004

Author(s):

T. Morita ◽

Y. Sakawa ◽

Y. Kuramitsu ◽

T. Ide ◽

K. Nishio ◽

...

Keyword(s):

Magnetic Field ◽

Mach Number ◽

External Magnetic Field ◽

Collisionless Shock ◽

High Mach Number ◽

High Mach

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Magnetic control of the plasma flows in laser targets

Laser and Particle Beams ◽

10.1017/s0263034600008223 ◽

1994 ◽

Vol 12 (3) ◽

pp. 371-377 ◽

Cited By ~ 5

Author(s):

S.Yu. Gus'kov ◽

V.B. Rozanov ◽

T. Pisarczyk

Keyword(s):

Magnetic Field ◽

External Magnetic Field ◽

Laser Beam ◽

Plasma Flow ◽

Laser Beams ◽

Magnetic Control ◽

Plasma Flows ◽

The Magnetic Field ◽

Magnetic Field Transverse

The idea of controlling the plasma flows in laser targets by action of a strong external magnetic field (H ≥ 1 MG) is presented. The magnetic control of plasma flows for the keeping of a transparency of entrance holes of indirect-compression targets and other type targets operating at an introduction of the laser beams into the interior of the target is suggested. It is shown that the magnetic field, transverse versus the direction of the propagation of the plasma flow with an intensity of 2–4 MG, causes a decrease (1.5–3 times) of the closing speed of holes for the laser beam introduction into the hohlraum target.

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