The formation of reverse shocks in magnetized high energy density supersonic plasma flows

S. V. Lebedev, L. Suttle, G. F. Swadling, M. Bennett, S. N. Bland, G. C. Burdiak, D. Burgess, J. P. Chittenden, A. Ciardi, A. Clemens, P. de Grouchy, G. N. Hall, J. D. Hare, N. Kalmoni, N. Niasse, S. Patankar, L. Sheng, R. A. Smith, F. Suzuki-Vidal, J. Yuan, A. Frank, E. G. Blackman, R. P. Drake

doi:10.1063/1.4874334

<jats:p>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.</jats:p>

The formation of reverse shocks in magnetized high energy density supersonic plasma flows

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The formation of reverse shocks in magnetized high energy density supersonic plasma flows

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