Construction and analysis of guiding center distributions for tokamak plasmas with ambient radial electric fieldThe contribution of a time-independent toroidally-symmetric radial electric field Er is implemented in VisualStart [Comp. Phys. Comm. 275 (2022) 108305; arXiv:2111.08224], a code whose purposes…Andreas Bierwage, Philipp Lauber, Noriyoshi Nakajima et al.·Nov 28, 2024SaveLearn
Intermittency assessed through a model of kurtosis-skewness relation in MHD in fast dynamo regimesIntermittency as it occurs in fast dynamos in the MHD framework is evaluated through the examination of relations between normalized moments at third order (skewness S) and fourth order (kurtosis K)…Yannick Ponty, Helene Politano, Annick Pouquet·Nov 28, 2024SaveLearn
Axisymmetric model for 1-color laser filament THz emissionA 3D axisymmetric model for laser beam propagation in air is proposed for use with THz emission calculations. The model accounts for nonlinear propagation of the femtosecond pulse that generates the…Sean D. McGuire, Mikhail N. Shneider·Nov 28, 2024SaveLearn
On Density Limit of Lower Hybrid Current Drive caused by Parametric Decay Instability in Tokamak PlasmasThe density limit of lower hybrid current drive (LHCD) is scaled by coupling the saturation process of parametric decay instability induced by LH waves in the scrape off layer (SOL) plasma to the…Kunyu Chen, Zhihao Su, Zikai Huang et al.·Nov 28, 2024SaveLearn
Randomization of a Laser Wavefront by the Turbulent Gas-Puff Z-Pinch Plasma ColumnIn this paper, we present the first direct experimental evidence supported by numerical modeling of a turbulent plasma column formed during a gas-puff z-pinch implosion generated by COBRA current.…A. Rososhek, E. S. Lavine, B. R. Kusse et al.·Nov 27, 2024SaveLearn
Data-driven discovery of a heat flux closure for electrostatic plasma phenomenaProgress in understanding multi-scale collisionless plasma phenomena requires employing tools which balance computational efficiency and physics fidelity. Collisionless fluid models are able to…Emil R. Ingelsten, Madox C. McGrae-Menge, E. Paulo Alves et al.·Nov 27, 2024SaveLearn
Atoms in Dense Plasmas: Models, Applications, and Current ChallengesModeling plasmas in terms of atoms or ions is theoretically appealing for several reasons. When it is relevant, the notion of atom or ion in a plasma provides us with an interpretation scheme of the…Robin Piron·Nov 27, 2024SaveLearn
Spatially modulated plasma profile for turbulence and instabilities mitigation in fusion plasmaThis work explores a novel approach to mitigating turbulence in fusion plasmas through spatially modulated plasma profiles. By imposing a harmonic modulation on plasma parameters, we introduce…Ilya Shesterikov·Nov 27, 2024SaveLearn
Direct comparison of the energization of self-consistent charged particles vs test particles in a turbulent plasmaThe test particle approach is a widely used method for studying the dynamics of charged particles in complex electromagnetic fields and has been successful in explaining particle energization in…Facundo Pugliese, Pablo Dmitruk·Nov 27, 2024SaveLearn
Kinetic simulations underestimate the effects of waves during magnetic reconnectionCollisionless plasma systems are often studied using fully kinetic simulations, where protons and electrons are treated as particles. Due to their computational expense, it is necessary to reduce the…J. Ng, J. Yoo, L. -J. Chen et al.·Nov 27, 2024SaveLearn
Broadband coherent XUV light from e-/e+ microbunching in an intense laser pulseAttosecond pulses of coherent extreme ultraviolet (XUV) light are instrumental for investigating subatomic dynamics and can be produced using a free-electron laser (FEL). It has been suggested that…Michael J. Quin, Antonino Di Piazza, Çağrı Erciyes et al.·Nov 26, 2024SaveLearn
Variational Quantum Simulation of the Fokker-Planck Equation applied to Quantum Radiation ReactionNear-future experiments with Petawatt class lasers are expected to produce a high flux of gamma-ray photons and electron-positron pairs through Strong Field Quantum Electrodynamical processes.…Óscar Amaro, Lucas I. Iñigo Gamiz, Marija Vranic·Nov 26, 2024SaveLearn
All-optical compact setup for generation of collimated multi-MeV proton beams with a "snail" targetThe work considers an optical scheme for collimation of high-energy proton beams using 105~T scale magnetic fields induced in a miniature "snail" target by petawatt or multi-petawatt…N. Bukharskii, Ph. Korneev·Nov 26, 2024SaveLearn
Vlasov-Poisson simulation study of phase-space hole coalescence in a cylindrically wave-guided plasmaIn this work, coalescence of phase-space holes of collision-less, one-dimensional plasmas is studied using kinetic simulation techniques. Phase-space holes are well-known Bernstein-Greene-Kruskal…Allen Lobo, Vinod Kumar Sayal·Nov 26, 2024SaveLearn
AC-Augmented Dielectric Barrier DischargeDielectric barrier discharge (DBD) plasma actuators generate an electrohydrodynamic (EHD) force through the ionization and acceleration of charged species. Most active flow control DBD applications…Anthony Tang, Alexander Mamishev, Igor Novosselov·Nov 26, 2024SaveLearn
Cyclic phase transition of substrate-modulated 2D dusty plasma driven by oscillatory forcesLangevin dynamical simulations are performed to investigate the formation of clusters and voids of a two-dimensional-periodic-substrate (2DPS) modulated two-dimensional dusty plasma (2DDP) driven by…Ao Xu, C. Reichhardt, C. J. O. Reichhardt et al.·Nov 26, 2024SaveLearn
Relativistic two-wave resonant acceleration of electrons at large-amplitude standing whistler waves during laser-plasma interactionThe interaction between a thin foil target and a circularly polarized laser light injected along an external magnetic field is investigated numerically by particle-in-cell simulations. A standing…Takayoshi Sano, Shogo Isayama, Kenta Takahashi et al.·Nov 26, 2024SaveLearn
Improved Bethe-Heitler positron creation and retention by combining direct laser acceleration and solid target interaction within a gas jetThe next generation of Petawatt-class lasers presents the opportunity to study positron production and acceleration experimentally, in an all-optical setting. Several configurations were proposed to…Lucas I. Iñigo Gamiz, Robert Babjak, Bertrand Martinez et al.·Nov 26, 2024SaveLearn
Back to the Figure-8 StellaratorThe first stellarator design was a simple tube of plasma twisted and closed on itself in the form of a figure-8. The line of such devices, however, was quickly ended over concerns related to plasma…G. G. Plunk, M. Drevlak, E. Rodriguez et al.·Nov 25, 2024SaveLearn
Influence of plasma particle flow on dust grain charging and on particle number densityThis study explores the dynamic evolution of dust electrical potential and plasma particle number densities with a focus on the charging of dust grains through electron and ion absorption, as…L. B. De Toni, L. F. Ziebell, R. Gaelzer·Nov 25, 2024SaveLearn
Dynamics and modulation of cosmic ray modified magnetosonic waves in a galactic gaseous rotating plasmaThe influence of the presence of cosmic fluid on the magnetosonic waves and modulation instabilities in the interstellar medium of spiral galaxies is investigated. The fluid model is developed by…Jyoti Turi, Gadadhar Banerjee·Nov 25, 2024SaveLearn
Stability of Crossed-Field AmplifiersThis research examines the stability of crossed-field amplifiers (CFAs) and characterizes their different modes of operation: amplification, driven oscillation, and self-excited oscillation. The CFA…Christopher Swenson, Ryan Revolinsky, Adam Brusstar et al.·Nov 25, 2024SaveLearn
Anisotropic anomalous diffusion in microgravity dusty plasma. Part One: Nonextensive Statistical AnalysisAnisotropic anomalous dust diffusion in microgravity dusty plasma is investigated using experimental data from the Plasmakristall-4 (PK-4) facility on board the International Space Station. The PK-4…Bradley R. Andrew, Luca Guazzotto, Lorin Matthews et al.·Nov 24, 2024SaveLearn
Adiabatic sheath model for beam-driven blowout plasma channelsIn plasma wakefield accelerators, the structure of the blowout sheath is vital for the blowout radius and the electromagnetic field distribution inside the blowout. Previous theories assume…Yulong Liu, Ming Zeng, Lars Reichwein et al.·Nov 22, 2024SaveLearn
Enhanced Collisional Losses from a Magnetic Mirror Using the Lenard-Bernstein Collision OperatorCollisions are crucial in governing particle and energy transport in plasmas confined in a magnetic mirror trap. Modern gyrokinetic codes model transport in magnetic mirrors, but some utilize…Maxwell H. Rosen, Wrick Sengupta, Ian Ochs et al.·Nov 21, 2024SaveLearn