A plasma deflagration accelerator as a platform for laboratory astrophysics

TC Underwood, KTK Loebner, MA Cappelli - High energy density physics, 2017 - Elsevier
The replication of astrophysical flows in the laboratory is critical for isolating particular
phenomena and dynamics that appear in complex, highly-coupled natural systems. In …

Modeling of thermalization phenomena in coaxial plasma accelerators

V Subramaniam, P Panneerchelvam… - Journal of Physics D …, 2018 - iopscience.iop.org
Coaxial plasma accelerators are electromagnetic acceleration devices that employ a self-
induced Lorentz force to produce collimated plasma jets with velocities~ 50 km s− 1. The …

Computational and experimental investigation of plasma deflagration jets and detonation shocks in coaxial plasma accelerators

V Subramaniam, TC Underwood, LL Raja… - Plasma Sources …, 2018 - iopscience.iop.org
We present a magnetohydrodynamic (MHD) numerical simulation to study the physical
mechanisms underlying plasma acceleration in a coaxial plasma gun. Coaxial plasma …

[HTML][HTML] Magnetohydrodynamic simulation study of plasma jets and plasma-surface contact in coaxial plasma accelerators

V Subramaniam, LL Raja - Physics of Plasmas, 2017 - pubs.aip.org
Recent experiments by Loebner et al.[IEEE Trans. Plasma Sci. 44, 1534 (2016)] studied the
effect of a hypervelocity jet emanating from a coaxial plasma accelerator incident on target …

Schlieren diagnostic for cinematic visualization of dense plasma jets at Alfvénic timescales

TC Underwood, KTK Loebner, VA Miller… - Experiments in …, 2020 - Springer
The manner in which magnetized plasma jets evolve remains key to better understanding
the behavior of hydromagnetic systems and providing new insights into how they can be …

Viscous-resistive layer in Rayleigh-Taylor instability

FEM Silveira, HI Orlandi - Physics of Plasmas, 2017 - pubs.aip.org
In this work, new scaling laws of the time growth rate γ of the Rayleigh-Taylor instability with
the plasma resistivity η, kinematic viscosity ν, and electron number density ne are derived. A …

Simulation of erosion and redeposition of plasma facing materials under transient plasma instabilities

NM Almousa, M Bourham - IEEE Transactions on Plasma …, 2020 - ieeexplore.ieee.org
Deposition of plasma energy during off-normal fusion reactor operational events delivers a
transient heat flux of up to 100 MJ/m 2 to the plasma-facing materials (PFMs). Understanding …

Current sheet characteristics of a parallel-plate electromagnetic plasma accelerator operated in gas-prefilled mode

S Liu, Y Huang, H Guo, T Lin, D Huang, L Yang - Physics of Plasmas, 2018 - pubs.aip.org
The axial characteristics of a current sheet in a parallel-plate electromagnetic plasma
accelerator operated in gas-prefilled mode are reported. The accelerator is powered by a …

Effects of flow collisionality on ELM replication in plasma guns

TC Underwood, V Subramaniam, WM Riedel… - Fusion Engineering and …, 2019 - Elsevier
Degradation of first wall materials due to plasma disturbances severely limit both the lifetime
and longevity of fusion reactors. Among the various kinds of disturbances, type I edge …

Characterizing Energy Loss Mechanisms in Air-Breathing Electric Propulsion

EC Horstman, AP Woodley, VS Subhankar… - AIAA SCITECH 2024 …, 2024 - arc.aiaa.org
We aim to characterize ABEP performance by investigating loss terms related to particle
excitations. An air chemistry performance model is introduced to calculate reaction loss …