Development of a 3D-CNN-based Prediction Model for Migration Barriers in Plasma-Wall InteractionsUnderstanding the long-term transport of hydrogen isotopes in plasma-facing materials, such as tungsten, is critical for the steady-state operation of magnetic confinement fusion reactors. However,…Seiki Saito, Keisuke Takeuchi, Hiroaki Nakamura et al.·Jun 5, 2026SaveLearn
Triggering physical plasmoids in forming current sheets: conditions and diagnosticsWe investigate the conditions for triggering the plasmoid instability in a dynamically forming current sheet in the resistive magnetohydrodynamic framework, using a pseudo-spectral code applied to…Hubert Baty·Jun 5, 2026SaveLearn
TokaMind: A Multi-Modal Transformer Foundation Model for Tokamak Plasma DynamicsWe present TokaMind, to our knowledge the first open-source foundation model for tokamak plasma dynamics, based on a Multi-Modal Transformer (MMT) and pretrained on heterogeneous diagnostics from the…Tobia Boschi, Andrea Loreti, Nicola C. Amorisco et al.·Jun 5, 2026SaveLearn
Plasma wakefield dynamics of self-generated electron bunch trainsLaser plasma accelerators can deliver high-energy, quasi-monoenergetic electron beams over centimeter-scale distances. In this work, we report on the generation of narrow, quasi-monoenergetic…Salome Benracassa, Sheroy Tata, Yinren shou et al.·Jun 4, 2026SaveLearn
A Surrogate Model for Proton Spectrum Prediction to Map Transitions in Laser-Ion AccelerationWe present a physics-guided, decoupled dual-branch surrogate model to predict continuous proton energy spectra from laser-driven ion acceleration. Integrating a β-VAE for spectral feature…Chengqi-Zhang, Yang He, Mamat Ali Bake et al.·Jun 4, 2026SaveLearn
Wave drag in moving plasmas: recent developments and prospectsWave propagation in a medium differs depending on whether this medium is at rest or moving with respect to an observer. Motion can notably lead to modifications of the wave trajectory, of its…Renaud Gueroult, Aymeric Braud, Julien Langlois·Jun 4, 2026SaveLearn
Optimization of EUV output by experimentally validated radiation-hydrodynamic simulations across a broad laser parameter spacePractical requirements such as improving wall-plug efficiency and reducing system footprint have become increasingly important with the introduction of extreme ultraviolet (EUV) lithography into…Nozomi Tanaka, Yu Yamamoto, Akira Sasaki et al.·Jun 4, 2026SaveLearn
Coupled simulation of plasma-surface interactions during early stages of vacuum arcingWe describe fully coupled simulations that bridge atomistic cathode dynamics and plasma formation during the earliest stages of vacuum arcing. The model combines molecular dynamics, finite element…Roni Koitermaa, Andreas Kyritsakis, Tauno Tiirats et al.·Jun 4, 2026SaveLearn
Radiation-induced electron spin polarization in ultrarelativistic kinetic turbulenceElectron spin polarization in radiative plasmas with ultrarelativistic kinetic turbulence under highly magnetized conditions is investigated using particle-in-cell simulations. We observe that a…Peng Liu, Karen Z. Hatsagortsyan, Christoph H. Keitel et al.·Jun 4, 2026SaveLearn
Beam-Plasma Collective Oscillations in Intense Charged-Particle Beams: Dielectric Response Theory, Langmuir Wave Dispersion, and Unsupervised Detection via PrometheusWe develop a theoretical and computational framework for beam-plasma collective oscillations in intense charged-particle beams at intermediate energies (10-100 MeV). In Part I, we formulate a kinetic…Brandon Yee, Wilson Collins, Michael Iofin et al.·Jun 4, 2026SaveLearn
Turbulent Nature of the Quasicontinuous Exhaust Regime for Fusion PlasmasWe demonstrate a turbulence mechanism that reconciles high plasma confinement with efficient heat exhaust -- a central challenge for fusion energy. Global two-fluid turbulence simulations of the…Kaiyu Zhang, Wladimir Zholobenko, Andreas Stegmeir et al.·Jun 4, 2026SaveLearn
Machine Learning for Electron-Scale Turbulence Modeling in W7-XConstructing reduced models for turbulent transport is essential for accelerating profile predictions and enabling many-query tasks such as parameter exploration and design optimization. This work…Ionut-Gabriel Farcas, Don Lawrence Carl Agapito Fernando, Alejandro Banon Navarro et al.·Jun 4, 2026SaveLearn
A Self-Consistent Model of Kinetic Alfven Solitons in Pulsar Wind Plasma: Linking Soliton Characteristics to Pulsar ObservablesA self-consistent model is presented for the formation and propagation of kinetic Alfvén (KA) solitons in mass-loaded filaments within the pulsar wind, where a magnetized electron--positron--ion…Manpreet Singh, Geetika Slathia, N. S. Saini et al.·Jun 4, 2026SaveLearn
Implementation and Verification of Toroidal Resistive Wall Boundary Conditions in the PIXIE3D MHD code using a Boundary Integral MethodWe present the complete formulation of resistive wall boundary conditions in axisymmetric toroidal geometries as implemented in the PIXIE3D extended magnetohydrodynamics (MHD) code, along with a…Samuel Jones, Luis Chacón, Jason Hamilton et al.·Jun 3, 2026SaveLearn
Behavior of kinetic instabilities in a dynamically forming resonant distributionInstabilities driven by energetic particles are central to the physics of a burning plasma. The majority of kinetic simulations and reduced models assume that the unstable distribution is already…E. J. Hartigan-O'Connor, T. Barberis, E. G. Devin et al.·Jun 3, 2026SaveLearn
Particle-in-Cell Simulation of the Parametric Decay Instability of Alfvén Waves with Absorbing Boundary ConditionsThe Alfvén wave parametric decay instability (PDI) facilitates energy transfer, plasma heating, and turbulence generation in space, astrophysical, and fusion plasmas. Most simulation studies of…Vijay Shankar, Feiyu Li, Seth Dorfman et al.·Jun 3, 2026SaveLearn
High-beta runaway transitions in a fluid model of electromagnetic ion-temperature-gradient turbulenceGyrokinetic simulations of tokamak turbulence indicate that fluctuation levels increase abruptly and dramatically when the plasma beta exceeds a certain critical value. This increase in fluctuation…Y. Zhang, M. Barnes, A. A. Schekochihin et al.·Jun 3, 2026SaveLearn
How nonlinear spectral back transfer limits the temporal coherency of zonal modes?Zonal modes are central to magnetic confinement because their radial shears regulate turbulence and transport. While the generation of these flows is well understood, the mechanisms limiting their…Rameswar Singh, P H Diamond·Jun 3, 2026SaveLearn
Compact quasiaxisymmetric stellarators, a near axisymmetric theoryWe develop a theory of ridges in compact stellarators with quasiaxisymmetry (QA). The equilibrium with finite plasma currents and pressure is modeled by ideal magnetohydrostatics (MHS). Field lines…Wrick Sengupta, Rogerio Jorge, Nikita Nikulsin et al.·Jun 2, 2026SaveLearn
Precursor Solitons in Plasma Flow Past Charged Obstacles: Role of Obstacle Bias and Ion Temperature AnisotropyWe investigate electrostatic ion-acoustic precursor solitons in a plasma flow past an absorbing charged obstacle using two-dimensional (2D) electrostatic PIC simulations. A key outcome of the present…Prince Kumar, S. K. Mishra·Jun 2, 2026SaveLearn
Velocity space origins of pressure-strain interaction in multi-population distributions and its application to magnetic reconnectionA forefront research question is how energy evolves in weakly collisional plasmas for which departures from local thermodynamic equilibrium (LTE) are significant. The standard approach is studying…M. Hasan Barbhuiya, Paul A. Cassak, Sarah Conley et al.·Jun 2, 2026SaveLearn
Nonlinear Equation for Dust Drift WavesA nonlinear equation for dust drift waves is derived assuming two-dimensional propagation and ignoring the role of dust acoustic waves. Both the nonlinear dust density term and the dust vorticity…Hamid Saleem·Jun 2, 2026SaveLearn
Likelihood topology and applicability limits of spatial anti-aliasing inversion for folded electron drift instability dispersion in Hall thrustersThe electron drift instability (EDI) is widely recognized as the leading mechanism for anomalous electron transport in Hall thrusters, but its millimeter and sub-millimeter wavelength makes…Zilong Peng, Baisheng Wang, Zhongping Zhao et al.·Jun 2, 2026SaveLearn
Piecewise omnigenous magnetohydrodynamic equilibria as fusion reactor candidatesIn piecewise omnigenous magnetic fields, charged particles remain perfectly confined in the abscence of collisions and turbulence. This concept extends the traditional notion of omnigenity, the…V. Fernández-Pacheco, J. L. Velasco, E. Sánchez et al.·Jun 2, 2026SaveLearn
Learning collision operators from plasma phase space data using differentiable simulatorsWe propose a methodology to infer collision operators from phase space data of plasma dynamics. Our approach combines a differentiable kinetic simulator, whose core component in this work is a…Diogo D. Carvalho, Pablo J. Bilbao, Warren B. Mori et al.·Jun 2, 2026SaveLearn