Density jump as a function of magnetic field for switch-on collisionless shocks in pair plasmasThe properties of collisionless shocks, like the density jump, are usually derived from magnetohydrodynamics (MHD), where isotropic pressures are assumed. Yet, in a collisionless plasma, an external…Antoine Bret, Ramesh Narayan·Jun 14, 2022SaveLearn
Marginally Stable Current Sheets in Collisionless Magnetic ReconnectionNon-collisional current sheets that form during the nonlinear development of magnetic reconnection are characterized by a small thickness, of the order of the electron skin depth. They can become…Camille Granier, Dario Borgogno, Luca Comisso et al.·Jun 13, 2022SaveLearn
Localized absorption of laser energy in X-mode configuration of magnetized plasmaThe heating of ions via lower hybrid waves has been observed in several astrophysical as well as laboratory plasmas. We have conducted Particle-In-Cell simulations to demonstrate absorption of the…Ayushi Vashistha, Devshree Mandal, Srimanta Maity et al.·Jun 11, 2022SaveLearn
Plane strain optimization of conductor and structure grading in the inner leg of a Tokamak toroidal field coilI present the results of the analytic plane strain optimization of the structure and conductor grading in the inner leg of a Tokamak toroidal field coil. The coil is assumed to be made of regions of…Charles PS Swanson·Jun 9, 2022SaveLearn
On Scaling of Hall-Effect Thrusters Using Neural NetsHall-effect thrusters (HETs) are widely used for modern near-earth spacecraft propulsion and are vital for future deep-space missions. Methods of modeling HETs are developing rapidly. However, such…Yegor V. Plyashkov, Andrey A. Shagayda, Dmitrii A. Kravchenko et al.·Jun 9, 2022SaveLearn
Dynamics of H atoms surface recombination in low-temperature plasmaThe dynamics of H atom recombination on materials of interest for a EUV lithographer was studied under a longterm low-pressure H2 plasma exposure. The similarity of the experimental plasma with the…V. Gubarev, D. Lopayev, A. Zotovich et al.·Jun 9, 2022SaveLearn
Transport barrier onset and edge turbulence shortfall in fusion plasmasTurbulent plasmas notably self-organize to higher energy states upon application of additional free energy sources or modification of edge operating conditions. Mechanisms whereby such bifurcations…Guilhem Dif-Pradalier, Philippe Ghendrih, Yanick Sarazin et al.·Jun 8, 2022SaveLearn
Thermal ion kinetic effects and Landau damping in fishbone modesThe kinetic-MHD hybrid simulation approach for macroscopic instabilities in plasmas can be extended to include the kinetic effects of both thermal ions and energetic ions. The new coupling scheme…Chang Liu, Stephen C. Jardin, Jian Bao et al.·Jun 8, 2022SaveLearn
Instabilities in a current sheet with plasma jetWe study the stability problem of a magnetohydrodynamic current sheet with the presence of a plasma jet. The flow direction is perpendicular to the normal of the current sheet and we analyze two…Chen Shi·Jun 7, 2022SaveLearn
Powerful laser-produced quasi-half-cycle THz pulsesThe Maxwell equations based 3D analytical solution for the terahertz half-cycle electromagnetic wave transition radiation pulse has been found. This solution describes generation and propagation of…A. S. Kuratov, A. V. Brantov, V. F. Kovalev et al.·Jun 6, 2022SaveLearn
An Assessment Of Full-Wave Effects On Maxwellian Lower-Hybrid Wave DampingLower-hybrid current drive (LHCD) actuators are important components of modern day fusion experiments as well as proposed fusion reactors. However, simulations of LHCD often differ substantially from…S J Frank, J C Wright, I H Hutchinson et al.·Jun 3, 2022SaveLearn
Unsupervised Discovery of Inertial-Fusion Plasma Physics using Differentiable Kinetic Simulations and a Maximum Entropy Loss FunctionPlasma supports collective modes and particle-wave interactions that leads to complex behavior in inertial fusion energy applications. While plasma can sometimes be modeled as a charged fluid, a…Archis S. Joglekar, Alexander G. R. Thomas·Jun 3, 2022SaveLearn
atoMEC: An open-source average-atom Python codeAverage-atom models are an important tool in studying matter under extreme conditions, such as those conditions experienced in planetary cores, brown and white dwarfs, and during inertial confinement…Timothy J. Callow, Daniel Kotik, Eli Kraisler et al.·Jun 2, 2022SaveLearn
Vibrational relaxation and triggering of the non-equilibrium vibrational decomposition of CO2 in gas dischargesNon-equilibrium vibrational dissociation of CO2 at low translational-rotational temperatures T is investigated computationally for conditions of microwave induced plasmas. Semi-analytic…Vladislav Kotov·Jun 2, 2022SaveLearn
Runaway dynamics in disruptions with current relaxationThe safe operation of tokamak reactors requires a reliable modeling capability of disruptions, and in particular the spatio-temporal dynamics of associated runaway electron currents. In a disruption,…István Pusztai, Mathias Hoppe, Oskar Vallhagen·Jun 2, 2022SaveLearn
Enhanced energy deposition and carrier generation in silicon induced by two-color intense femtosecond laser pulsesWe theoretically investigate the optical energy absorption of crystalline silicon subject to dual-color femtosecond laser pulses, using the time-dependent density functional theory (TDDFT). We employ…Mizuki Tani, Kakeru Sasaki, Yasushi Shinohara et al.·May 31, 2022SaveLearn
Turbulence Generation by Shock Interaction with a Highly Non-Uniform MediumAn initially planar shock wave propagating into a medium of non-uniform density will be perturbed, leading to the generation of post-shock velocity perturbations. Using numerical simulations we study…Seth Davidovits, Christoph Federrath, Romain Teyssier et al.·May 31, 2022SaveLearn
2022 Review of Data-Driven Plasma ScienceData science and technology offer transformative tools and methods to science. This review article highlights latest development and progress in the interdisciplinary field of data-driven plasma…Rushil Anirudh, Rick Archibald, M. Salman Asif et al.·May 31, 2022SaveLearn
Half-and-half HFCG with double-end initiationDesign of helical flux compression generator with double-end initiation is described. The developed design approach makes it possible to increase the power in the load by 60\% and shorten the rise…S. Anishchenko, P. Bogdanovich, A. Gurinovich et al.·May 30, 2022SaveLearn
Linear stability analysis via simulated annealing and accelerated relaxationSimulated annealing (SA) is a kind of relaxation method for finding equilibria of Hamiltonian systems. A set of evolution equations is solved with SA, which is derived from the original Hamiltonian…M. Furukawa, P. J. Morrison·May 29, 2022SaveLearn
Thermodynamic Flux-Force Closure Relations for Systems out of the Onsager RegionThe objective of this work is to determine the nonlinear flux-force relations for systems out of Onsager's region that respect the existing thermodynamic theorems for systems far from…Giorgio Sonnino·May 29, 2022SaveLearn
Multiphase nonlinear electron plasma wavesWe present a method for constructing multiphase excitations in the generally non-integrable system of warm fluid equations describing plasma oscillations. It is based on autoresonant excitation of…Vadim R. Munirov, Lazar Friedland, Jonathan S. Wurtele·May 28, 2022SaveLearn
Finite element simulation for validation of multi-dipole line cusp magnetic field configuration for MPDA Multi-dipole line cusp configured Plasma Device (MPD) having six electromagnets with embedded Vacoflux-50 as a core material has been operated with a capability to experimentally control the…A. D. Patel, A. Amardas, N. Ramasubramanian·May 28, 2022SaveLearn
Temperature Screening and Cross-Field Impurity Accumulation from a Thermodynamic PerspectiveIn a variety of different systems, high-Z ion species show a marked tendency to accumulate in regions of high plasma density. It has previously been suggested that the apparent universality of this…E. J. Kolmes, I. E. Ochs, M. E. Mlodik et al.·May 27, 2022SaveLearn
A comparison of Fourier and POD mode decomposition methods for high-speed Hall thruster videoHall thrusters are susceptible to large-amplitude plasma oscillations that impact thruster performance and lifetime and are also difficult to model. High-speed cameras are a popular tool to study…J. W. Brooks, M. S. McDonald, A. A. Kaptanoglu·May 27, 2022SaveLearn