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The formation of reverse shocks in magnetized high energy density supersonic plasma flows
- Source :
- Physics of Plasmas, Physics of Plasmas, 2014, 21 (5), pp.056305. ⟨10.1063/1.4874334⟩, Physics of Plasmas, American Institute of Physics, 2014, 21 (5), pp.056305. ⟨10.1063/1.4874334⟩
- Publication Year :
- 2014
- Publisher :
- HAL CCSD, 2014.
-
Abstract
- A new experimental platform was developed, based on the use of supersonic plasma flow from the ablation stage of an inverse wire array z-pinch, for studies of shocks in magnetized high energy density physics plasmas in a well-defined and diagnosable 1-D interaction geometry. The mechanism of flow generation ensures that the plasma flow (ReM ∼ 50, MS ∼ 5, MA ∼ 8, Vflow ≈ 100 km/s) has a frozen-in magnetic field at a level sufficient to affect shocks formed by its interaction with obstacles. It is found that in addition to the expected accumulation of stagnated plasma in a thin layer at the surface of a planar obstacle, the presence of the magnetic field leads to the formation of an additional detached density jump in the upstream plasma, at a distance of ∼c/ωpi from the obstacle. Analysis of the data obtained with Thomson scattering, interferometry, and local magnetic probes suggests that the sub-shock develops due to the pile-up of the magnetic flux advected by the plasma flow.
- Subjects :
- Velocity measurement
Thomson scattering
01 natural sciences
010305 fluids & plasmas
Plasma diagnostics
Physics, Fluids & Plasmas
Physics::Plasma Physics
0103 physical sciences
Supersonic speed
010306 general physics
Choked flow
ComputingMilieux_MISCELLANEOUS
Physics
[PHYS]Physics [physics]
Science & Technology
Magnetic field measurements
Mechanics
Plasma
equipment and supplies
Condensed Matter Physics
Magnetic flux
Magnetic field
Z-pinch
Magnetic fields
Physics::Space Physics
Physical Sciences
Atomic physics
Plasma flows
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
human activities
Subjects
Details
- Language :
- English
- ISSN :
- 1070664X and 10897674
- Database :
- OpenAIRE
- Journal :
- Physics of Plasmas, Physics of Plasmas, 2014, 21 (5), pp.056305. ⟨10.1063/1.4874334⟩, Physics of Plasmas, American Institute of Physics, 2014, 21 (5), pp.056305. ⟨10.1063/1.4874334⟩
- Accession number :
- edsair.doi.dedup.....39409a5cad6233dc0daa201abde8cdc8