Breakeven Conditions for Beam-Target Fusion with Electron-Suppressed TargetsThis manuscript provides a detailed and extended analysis of the breakeven conditions for nuclear fusion based on beam-target interactions, distinct from conventional plasma-based approaches.…Tadafumi Kishimoto·May 4, 2026SaveLearn
Diffusion wall time in toroidally segmented shell aka ArmadilloAn analytical expression for the diffusion wall time of a toroidally segmented conducting shell (the Armadillo configuration) is derived by extending the continuous-shell formulation to include the…D. Abate, A. Corbioli·May 3, 2026SaveLearn
Computational boundary specification in 3D fixed-boundary magnetohydrodynamic equilibrium modelingOutside the core of the plasma, the plasma current and pressure rapidly transition to zero in a scrape-off or edge region or plasma-vacuum interface. However, existing tools for fixed-boundary…Alan Kaptanoglu, Tobias Blickhan·May 3, 2026SaveLearn
The L-H transition in tokamaks: power threshold, density minimum and toroidal-field asymmetryThe physical mechanism underlying the L--H transition in tokamaks has remained an open problem for over forty years. We present three-dimensional flux-driven two-fluid simulations in a diverted…Brenno De Lucca, Paolo Ricci, Benoit Labit et al.·May 1, 2026SaveLearn
Profiles of the Power Density and Other Properties of Hydrogen Magnetohydrodynamic Generators at ConditionsHydrogen and some of its derivatives (such as e-methanol, e-methane, and e-ammonia) are promising energy carriers that have the potential to replace conventional fuels, thereby eliminating their…Osama A. Marzouk·May 1, 2026SaveLearn
Determination of turbulent heating rate and relaxed states in finite Larmor radius magnetohydrodynamic turbulence with helicity barrierFinite Larmor radius magnetohydrodynamics (FLR-MHD) provides a hybrid model of plasma that explains how turbulent energy cascade extends to sufficiently small parallel length scales, potentially…Ramesh Sasmal, Supratik Banerjee·Apr 30, 2026SaveLearn
Chirp-controlled plasma wake excitation by an exponential laser pulse in underdense plasmaThe excitation of plasma wakefields driven by chirped laser pulses is investigated using a reduced relativistic fluid Poisson model supported by fully relativistic particle in cell (PIC) simulations.…Ajit Kumar Kushwaha, Dinkar Mishra, Shivani Aggarwal et al.·Apr 30, 2026SaveLearn
Electrothermal Dynamics of Cold Front in Impure Tokamak PlasmasCurrent density perturbations induced by radiative collapse, which is a possible mechanism governing tokamak plasma disruptions, have been investigated using a reaction-diffusion model. The reaction…S. Oshiro, A. Matsuyama, Y. Nakamura·Apr 30, 2026SaveLearn
Improved n=1 Empirical Error Field Penetration Threshold Scaling with Ohmic and L-Mode Conventional Tokamak Plasma DischargesThis paper presents an updated n=1 error field penetration threshold scaling, which increases fit quality compared to previous error field scaling laws, is produced from an expanded database, and…E. M. Bursch, J. K. Park, N. C. Logan et al.·Apr 30, 2026SaveLearn
DeepPropNet: an operator learning-based predictor for thermal plasma propertiesThermal plasma properties play a critical role in plasma simulations and plasma-related applications. However, their strong nonlinear dependence on temperature, pressure, and gas composition makes…Zuo Wang, Linlin Zhong·Apr 30, 2026SaveLearn
A flexible and differentiable coil proxy for stellarator equilibrium optimizationBalancing plasma performance and coil cost is a significant challenge when designing a stellarator power plant. Most current stellarator designs are produced through two-stage optimization: stage-1…Lanke Fu, Dario Panici, Elizabeth Paul et al.·Apr 30, 2026SaveLearn
X-Ray Diagnostics Analysis Verification and Exploration (xDAVE) Code for the Prediction and Interpretation of X-Ray Thomson Scattering ExperimentsX-ray Thomson scattering (XRTS) is a common diagnostic used in the warm dense matter (WDM) regime to estimate plasma parameters like density, temperature and charge state. Experimental analysis…Hannah M. Bellenbaum, Dave A. Chapman, Maximilian P. Böhme et al.·Apr 29, 2026SaveLearn
Dispersive Properties of Plasma Diffraction Gratings: Towards Plasma-Based Laser Pulse CompressionThe standard architecture for a high-peak-power femtosecond laser is chirped pulse amplification using diffraction gratings for compression; the damage threshold of the compression gratings limits…Victor M. Perez-Ramirez, Michelle M. Wang, Ke Ou et al.·Apr 29, 2026SaveLearn
Theory of Relativistic Surface Plasmon Excitation on Smooth Surface by High-Intensity LaserWe present a classical theory of relativistic surface plasmon (RSP) excitation at a smooth plasma-vacuum interface driven by either a ponderomotive force or an electric field of an intense laser…Bifeng Lei, Bin Qiao, Matt Zepf et al.·Apr 29, 2026SaveLearn
Plasma dechirper and lens for electron beams from laser wakefield acceleration in a tailored density profileAchieving high-quality electron beams from laser wakefield accelerators critically relies on density tailoring to control electron dynamics during injection, acceleration, and extraction. We report…T. L. Steyn, A. Panchal, O. Vasilovici et al.·Apr 29, 2026SaveLearn
FPGA-Accelerated Real-Time Diagnostics at DIII-D Using the SLAC Neural Network Library for ML InferenceIn this work, we demonstrate the deployment of a hardware-accelerated machine learning (ML) inference system integrated into a real-time processing at the DIII-D tokamak fusion reactor. The team has…Abhilasha Dave, Semin Joung, SangKyeun Kim et al.·Apr 28, 2026SaveLearn
Model-free interpretation of X-ray Thomson scattering measurementsX-ray Thomson scattering (XRTS) has emerged as a widely used diagnostics for extreme states of matter in a great variety of situations, and over a broad range of parameters. The standard approach for…Thomas Gawne, Jan Vorberger, Zhandos Moldabekov et al.·Apr 28, 2026SaveLearn
Augmented reality system for visualising magnetic field topology and charged-particle trajectories in magnetic fusion plasmasA cost-effective augmented reality (AR) system is presented for visualising three-dimensional magnetic field structures and charged-particle trajectories in magnetically confined fusion plasmas. The…Akinobu Matsuyama·Apr 28, 2026SaveLearn
Theoretical Analysis and PIC Simulations of Electromagnetic Wakefields Excited by Relativistic Beams in Magnetized PlasmasThis study presents theoretical and numerical investigation of the coupled longitudinal and radial wakefields excited by ultrarelativistic electron beams propagating through a cold plasma channel…Ali Asghar Molavi Choobini, Mehran Shahmansouri·Apr 28, 2026SaveLearn
Second Harmonic Generation Through Backward Raman Scattering in Magnetized Plasmas Driven by Circularly Polarized Intense LasersA fluid-based theoretical framework is developed to describe the nonlinear cascade linking primary BRS-driven plasma wave amplification, oscillating two-stream instability (OTSI), nonlinear current…S. S. Ghaffari-Oskooei, A. A. Molavi Choobini·Apr 28, 2026SaveLearn
Wave-number-dependent closure condition for fluid moment equationsFluid models offer crucial computational efficiency for plasma simulations, yet accurately capturing kinetic effects like Landau damping remains a fundamental challenge. While conventional closures…Yong Sun, Shijia Chen, Minqing He et al.·Apr 28, 2026SaveLearn
Quasilinear flux model consistent with gyrokinetic orderingWe propose a quasilinear (QL) flux model in which the saturation amplitude is uniquely determined using multiscale gyrokinetic ordering relations. The model is fully self-contained within a linear…O. Yamagishi, G. Watanabe·Apr 27, 2026SaveLearn
Knudsen number as a non-thermal parameter: possible origin of skewness in space plasma distributionsNon-Maxwellian distributions and their origins in space plasma have attracted significant attention due to their prevalence and impact on various astrophysical and space-related phenomena. This paper…Iván Gallo-Méndez, Adolfo F. Viñas, Pablo S. Moya·Apr 27, 2026SaveLearn
A simple model of current ramp down in the ITER tokamakThe controlled ramp down of the toroidal plasma current in the ITER tokamak is simulated using a simple model that employs cylindrical geometry. The magnetohydrodynamical (MHD) stability of the…Richard Fitzpatrick·Apr 27, 2026SaveLearn
Efficient Generation of Neutrons Based on Ultrashort Laser-driven Direct Acceleration in Microwire-Array TargetsWe report on an experimental demonstration of efficient neutron generation based on direct laser acceleration in microwire-array targets irradiated by ultrashort (tens of femtoseconds) laser pulses.…Kaiyuan Feng, Debin Zou, Bo Cui et al.·Apr 26, 2026SaveLearn