Data-driven reduced modeling of streamer discharges in airWe present a computational framework for simulating filamentary electric discharges, in which channels are represented as conducting cylindrical segments. The framework requires a model that predicts…Jannis Teunissen, Alejandro Malagón-Romero·Jun 19, 2025SaveLearn
The Atomic Beam Probe Synthetic Diagnostic and its Application in Fusion PlasmasThe Atomic Beam Probe was installed on the COMPASS tokamak in Prague as an extension of the Beam Emission Spectroscopy. The construction and installation of the diagnostic were preceded by…Mátyás Aradi, Dániel I. Réfy, Shimpei Futatani et al.·Jun 18, 2025SaveLearn
Laser-Driven Annular Shock Waves as Laboratory Analogues of wCDM Cosmologies and Cosmological Gravitational WavesWe demonstrate that the experimental evolution of an annular, laser-driven plasma shock wave, expanding over time and undergoing self-interaction gives rise to multiple shock structures that evolve…Felipe A. Asenjo, Felipe Veloso, Julio C. Valenzuela·Jun 18, 2025SaveLearn
Helical Electron Beam Micro-Bunching by High-Order Modes in a Micro-Plasma WaveguideElectron acceleration by a high-power Laguerre-Gaussian pulse in a micro-plasma waveguide is investigated. When the incident laser travels in the waveguide, electrons on the wall are extracted into…Xinju Guo, Longqing Yi·Jun 18, 2025SaveLearn
The Gardner equation and acoustic solitary waves in plasmasIon-acoustic waves in a dusty plasma are investigated where it is assumed that the ions follow a Cairns distribution and the electrons are Boltzmann distributed. Two theoretical methods are applied:…Frank Verheest, Willy A. Hereman·Jun 17, 2025SaveLearn
Fourier Transform Method Of A Detailed Configuration Accounting In Hot Plasma Bound-Bound Opacity CalculationsG.~Hazak and J.~Kurzweil discovered a method of configurational resolution of transition arrays for the Super Transition Arrays approach to the bound-bound opacity calculation. Their method is based…Evgeniya Arapova, Yulia Koryakina, Mikhail Vronskiy·Jun 17, 2025SaveLearn
Imaginary part of the conductivity using Kramers-Kronig relationsIn order to obtain the frequency-dependent photo-absorption in a plasma, both the real and imaginary parts of the AC conductivity are required. The real part can be deduced from the knowledge of the…Jean-Christophe Pain, Mikael Tacu·Jun 17, 2025SaveLearn
Determining the Validity of Tokamak Perturbed Equilibrium Modeling Using Nonlinear EquilibriaThe prediction of perturbed equilibrium models for tokamaks with small 3D fields is strongly dependent on which reference frame for axisymmetry is assumed - for example, the toroidal field (TF) coil…J. Halpern, N. C. Logan, E. Paul et al.·Jun 17, 2025SaveLearn
Embedding physical symmetries into machine-learned reduced plasma physics models via data augmentationMachine learning is offering powerful new tools for the development and discovery of reduced models of nonlinear, multiscale plasma dynamics from the data of first-principles kinetic simulations.…Madox C. McGrae-Menge, Jacob R. Pierce, Frederico Fiuza et al.·Jun 16, 2025SaveLearn
Electrically insulating materials for centrifugal mirrorsThe centrifugal mirror confinement scheme incorporates supersonic rotation into a magnetic mirror device, which stabilizes and heats the plasma. This concept is under investigation in the Centrifugal…Nick R. Schwartz, Carlos A. Romero-Talamás, Marlene I. Patino et al.·Jun 16, 2025SaveLearn
Analytical models for the enhancement of fusion reactivity by turbulenceThe reactivity of fusion plasma depends not only on its local density and temperature but also, through a recently identified kinetic effect, on the relative velocities of nearby fluid elements.…Henry Fetsch, Nathaniel J. Fisch·Jun 16, 2025SaveLearn
The bump-on-tail instability excited by energetic electrons in helicon plasmaThis work explores for the first time bump-on-tail (BOT) instability excited by energetic electrons in helicon plasma. The Berk-Breizman model that developed for the wave-particle interaction and…Shi-Jie Zhang, Dong Jing, Lei Chang et al.·Jun 16, 2025SaveLearn
Reconstruction-free magnetic control of DIII-D plasma with deep reinforcement learningPrecise control of plasma shape and position is essential for stable tokamak operation and achieving commercial fusion energy. Traditional control methods rely on equilibrium reconstruction and…G. F. Subbotin, D. I. Sorokin, M. R. Nurgaliev et al.·Jun 16, 2025SaveLearn
Global linear drift-wave eigenmode structures on flux surfaces in stellarators: ion temperature gradient modeTurbulent transport greatly impacts the performance of stellarator magnetic confinement devices. While significant progress has been made on the numerical front, theoretical understanding of…Hongxuan Zhu, H. Chen, Z. Lin et al.·Jun 15, 2025SaveLearn
Simulation of Shattered Pellet Injections with Plasmoid Drifts in ASDEX Upgrade and ITERPellet injection is an important means to fuel and control discharges and mitigate disruptions in reactor-scale fusion devices. To accurately assess the efficiency of these applications, it is…O. Vallhagen, L. Antonsson, P. Halldestam et al.·Jun 15, 2025SaveLearn
Surfaces with Klein bottle topology occur in fusion reactor fieldsMagnetic confinement fusion devices, such as tokamaks and stellarators, are designed such that magnetic field lines lie in magnetic surfaces that form a foliation of nested genus-1 tori. The…Christopher Berg Smiet·Jun 13, 2025SaveLearn
Vibrational-Electron Heating in Plasma Flows: A Thermodynamically Consistent ModelAccurate prediction of electron temperature (T e) in non-equilibrium plasma flows is critical, yet hampered by inadequate models for electron heating from vibrationally excited states.…Felipe Martin Rodriguez Fuentes, Bernard Parent·Jun 13, 2025SaveLearn
Validation of Hermes-3 turbulence simulations against the TCV-X21 diverted L-mode reference caseElectrostatic flux-driven turbulence simulations with the Hermes-3 code are performed in TCV L-mode conditions in forward and reversed toroidal field configurations, and compared to the TCV-X21…B D Dudson, M Kryjak, H Muhammed et al.·Jun 13, 2025SaveLearn
In situ studies of a molten metal anode ablation in a nearly atmospheric pressure DC arcA DC arc with a meltable metal anode in a near-atmospheric pressure hydrocarbon gas is an emerging method for producing single-walled carbon nanotubes (SWCNTs). In these systems, evaporation of the…Stanislav Musikhin, Valerian Nemchinsky, Hengfei Gu et al.·Jun 12, 2025SaveLearn
Scattering Theory in Noncanonical Phase Space: A Drift-Kinetic Collision Operator for Weakly Collisional PlasmasAfter developing a scattering theory for grazing collisions in general noncanonical phase spaces, we introduce a guiding center collision operator in five-dimensional phase space designed for plasma…Naoki Sato, Philip J. Morrison·Jun 12, 2025SaveLearn
Analytic model for neutral penetration and plasma fuelingNeutral atoms recycled from wall interaction interact with confined plasma, thereby refueling it, most strongly in the region closest to the wall. This occurs near the X-point in diverted…George J. Wilkie·Jun 12, 2025SaveLearn
Spatial and temporal evolutions of blue-core helicon discharge driven by planar antenna with concentric ringsThe spatial and temporal evolutions of blue-core helicon discharge driven by a planar antenna with four concentric rings are explored on the Linear Experimental Advanced Device (LEAD). The discharge…Chao Wang, Lei Chang, Ling-Feng Lu et al.·Jun 12, 2025SaveLearn
Runaway electron-induced plasma facing component damage in tokamaksThis Roadmap article addresses the critical and multifaceted challenge of plasma-facing component (PFC) damage caused by runaway electrons (REs) in tokamaks, a phenomenon that poses a significant…S. Ratynskaia, M. Hoelzl, E. Nardon et al.·Jun 12, 2025SaveLearn
Exact series expansion for even frequency moments of the dynamic structure factorAn exact series representation of the even frequency moments of the dynamic structure factor is derived. Truncations are proposed that allow to evaluate the explicitly unknown second, fourth and…Panagiotis Tolias, Jan Vorberger, Tobias Dornheim·Jun 12, 2025SaveLearn
Numerical Modeling of n-Hexane Pyrolysis with an Optimized Kinetic Mechanism in a Hydrogen Plasma ReactorThe physicochemical mechanisms underlying the pyrolysis of n-hexane in a high temperature Ar-H2 environment were investigated for plasma pyrolysis process. An optimal chemical kinetics model was…Subin Choi, Chanmi Jung, Dae Hoon Lee et al.·Jun 11, 2025SaveLearn