A conditional formulation of the Vlasov-Ampere Equations: A conservative, positivity, asymptotic, and Gauss law preserving schemeWe propose a novel reformulation of the Vlasov-Ampère equations for plasmas. This reformulation exposes discrete symmetries to achieve simultaneous conservation of mass, momentum, and energy;…William T Taitano, Joshua W Burby, Alex Alekseenko·Oct 26, 2024SaveLearn
Efficient calculation of the moments of runaway electron distribution functionsPlasma current instabilities can destabilize the plasma discharge and cool the plasma rapidly. In such disruptions or in the start-up phase of the reactor, inductive electric fields are…Benjamin Buchholz·Oct 25, 2024SaveLearn
Differential pumping for kHz operation of a Laser Wakefield accelerator based on a continuously flowing Hydrogen gas jetLaser-Wakefield Accelerators (LWFA) running at kHz repetition rates hold great potential for applications. They typically operate with low-energy, highly compressed laser pulses focused in…Joséphine Monzac, Slava Smartsev, Julius Huijts et al.·Oct 25, 2024SaveLearn
α Effect and Magnetic Diffusivity β in Helical Plasma under Turbulence GrowthWe investigate the transport coefficients α and β in plasma systems with varying Reynolds numbers while maintaining a unit magnetic Prandtl number. The α and β tensors parameterize the…Kiwan Park·Oct 25, 2024SaveLearn
Ultrafast dynamics of a spin-polarized electron plasma with magnetic ionsWe construct a mean-field model that describes the nonlinear dynamics of a spin-polarized electron gas interacting with fixed, positively-charged ions possessing a magnetic moment that evolves in…Benjamin Bakri, Nicolas Crouseilles, Paul-Antoine Hervieux et al.·Oct 24, 2024SaveLearn
A Particle-In-Cell Method for Plasmas with a Generalized Momentum Formulation, Part III: A Family of Gauge Conserving MethodsIn this paper, we introduce a new family of spatially co-located field solvers for particle-in-cell applications which evolve the potential formulation of Maxwell's equations under the Lorenz…Andrew J. Christlieb, William A. Sands, Stephen R. White·Oct 24, 2024SaveLearn
On the linearity and stability of electrostatic structures based on the Schamel equationThis paper contributes in the first part to the correct understanding of the linear limit in the Schamel equation (S-equation) from the perspective of structure formation in collisionless plasmas.…Hans Schamel, Efim Pelinovsky, Marcelo V Flamarion·Oct 23, 2024SaveLearn
Computing MHD equilibria of stellarators with a flexible coordinate frameFor the representation of axi-symmetric plasma configurations, it is natural to use cyl. coordinates (R,Z,ϕ), where ϕ is an independent coordinate. The same cyl. coordinates have also been widely…Florian J. Hindenlang, Gabriel G. Plunk, Omar Maj·Oct 23, 2024SaveLearn
Introduction to Fusion Ignition Principles: Zeroth Order Factors of Fusion Energy ResearchThe physical goal of fusion energy research is to confine fusion fuel in a certain way so that the energy released from fusion exceeds the energy consumed to sustain the fusion process, thereby…Huasheng Xie·Oct 23, 2024SaveLearn
Evaluation of neoclassical transport in nearly quasi-isodynamic stellarator magnetic fields using MONKESStellarator magnetic fields that are perfectly optimized for neoclassical transport (with levels of radial neoclassical transport comparable to tokamaks) are called omnigenous. Quasi-isodynamic…Francisco Javier Escoto, José Luis Velasco, Iván Calvo et al.·Oct 23, 2024SaveLearn
Applied-Field Magnetoplasmadynamic Thrusters for Deep Space ExplorationRecent advancements in the development of Applied-Field Magnetoplasmadynamic thrusters (AF-MPDTs) present themselves to be an increasingly promising propulsion technology for deep space exploration…Matthew Han, Hannah Rana·Oct 22, 2024SaveLearn
Measurements of power dissipated in an atmospheric pressure plasma jet device with double plasma discharge ignitionAtmospheric pressure plasma jets (APPJs) are versatile devices with numerous applications. This work focuses on APPJs generated at the tip of long, flexible tubes using the jet transfer technique.…Fellype do Nascimento, Kleber Alexandre Petroski, Thalita Mayumi Castaldelli Nishime et al.·Oct 22, 2024SaveLearn
DEGAS 2 model validation study: comparison of measured and modeled helium and deuterium line emission arising from an external gas puff on Alcator C-ModThe ability to accurately model and predict neutral transport in the boundary plasma is important for tokamak operation. Nevertheless, validation of neutral transport models can be challenging due to…S. G. Baek, J. L. Terry, D. P. Stotler et al.·Oct 22, 2024SaveLearn
Surface Modifications of PCB-Based Plasma Sources Induced by Atmospheric Plasma: A Comparative Study of Dielectric and Electrode MaterialsThe study investigated the effects of atmospheric plasma on various dielectric materials (FR-4, PTFE, Al2O3) and electrode materials (copper, silver, gold-plated copper) used in surface…Jonathan Gail, Alisa Schmidt, Markus H. Thoma·Oct 22, 2024SaveLearn
Three-Dimensional Particle-In-Cell Simulations of Two-Dimensional Bernstein-Greene-Kruskal ModesIn this paper, we present three-dimensional (3D) Particle-In-Cell (PIC) simulations to study the stability of 2D Bernstein-Greene-Kruskal (BGK) modes in a magnetized plasma with a finite background…M. T. Franciscovich, J. McClung, K. Germaschewski et al.·Oct 22, 2024SaveLearn
Gas puff imaging of plasma turbulence in the magnetic island scrape-off layer of W7-XThe turbulence characteristics of the scrape-off-layer (SOL) plasma in the W7-X stellarator are investigated using a gas-puff-imaging (GPI) diagnostic, newly installed and operated during the OP 2.1…S. G. Baek, S. Ballinger, O. Grulke et al.·Oct 21, 2024SaveLearn
In-situ observations of the three-dimensional energy cascade rate and Yaglom flux in the Earth's magnetosheathMeasuring the energy cascade rate in space plasmas is a challenging task for several reasons. This quantity is (i) inherently three-dimensional (ii) scale-dependent, (iii) anisotropic in the…Francesco Pecora·Oct 21, 2024SaveLearn
Some generalizations of the convective model of jet generationFor analytical description of the initial stage of jet generation in nonequilibrium inhomogeneous plasma in the magnetohydrodynamic approximation, possible generalizations of solutions of the…S. N. Artekha·Oct 21, 2024SaveLearn
Continuous relativistic high-harmonic generation from a kHz liquid-sheet plasma mirrorWe report on continuous high-harmonic generation at 1 kHz repetition rate from a liquid-sheet plasma mirror driven by relativistic-intensity near-single-cycle light transients. Through precise…Antoine Cavagna, Milo Eder, Enam Chowdhury et al.·Oct 20, 2024SaveLearn
Electron-ion model of ball and bead lightningBased on the electron-ion model, parameters of ball and bead lightning are calculated. The model allows us to estimate maximum size of ball lightning, its energy content, electric charge and magnetic…Sergey G. Fedosin·Oct 20, 2024SaveLearn
Efficiency and Physical Limitations of Adiabatic Direct Energy Conversion in Axisymmetric FieldsWe describe and analyze a new class of direct energy conversion schemes based on the adiabatic magnetic drift of charged particles in axisymmetric magnetic fields. The efficiency of conversion as…J. -M. Rax, E. J. Kolmes, N. J. Fisch·Oct 20, 2024SaveLearn
A Study of Performance Portability in Plasma Physics SimulationsThe high-performance computing (HPC) community has recently seen a substantial diversification of hardware platforms and their associated programming models. From traditional multicore processors to…Josef Ruzicka, Christian Asch, Esteban Meneses et al.·Oct 19, 2024SaveLearn
A novel understanding of the role of plasma-molecular kinetics on divertor power exhaustDuring detachment, a buffer of neutral atoms and molecules builds up between the target and the ionising plasma. Collisions between the plasma and the molecules play an important role in the…N. Osborne, K. Verhaegh, D. Moulton et al.·Oct 18, 2024SaveLearn
Energy-Preserving Coupling of Explicit Particle-In-Cell with Monte Carlo CollisionsThe Particle-In-Cell (PIC) and Monte Carlo Collisions (MCC) methods are workhorses of many numerical simulations of physical systems. Recently, it was pointed out that, while the two methods can be…Jean-Luc Vay, Justin Ray Angus, Olga Shapoval et al.·Oct 18, 2024SaveLearn
Intrinsic bulk viscosity of the one-component plasmaIntrinsic bulk viscosity of the one-component plasma (OCP) is computed and analyzed using equilibrium molecular dynamics simulations and the Green-Kubo formalism. It is found that bulk viscosity…Jarett LeVan, Scott D. Baalrud·Oct 18, 2024SaveLearn