Planar Coil Optimization for the Eos Stellarator using Sparse RegressionA challenge in the design of stellarators for confining plasma at conditions relevant to fusion energy generation is designing a feasible set of magnetic field coils which can create the necessary…Ryan Wu, Thomas Kruger, Charles Swanson·Feb 11, 2025SaveLearn
5D Neural Surrogates for Nonlinear Gyrokinetic Simulations of Plasma TurbulenceNuclear fusion plays a pivotal role in the quest for reliable and sustainable energy production. A major roadblock to achieving commercially viable fusion power is understanding plasma turbulence,…Gianluca Galletti, Fabian Paischer, Paul Setinek et al.·Feb 11, 2025SaveLearn
Developing a Linear Fluid Plasma Model with Accurate Kinetic Bernstein Waves: A First StepKinetic models provide highly accurate descriptions of plasma waves but involve complex integrals that are computationally expensive to solve. To facilitate a fluid-like treatment of the system, we…Huasheng Xie·Feb 10, 2025SaveLearn
Betatron radiation emitted during the direct laser acceleration of electrons in underdense plasmasRelativistic laser pulses can accelerate electrons up to energies of several GeV during the interaction with gaseous targets through the direct laser acceleration (DLA) mechanism. While the electrons…Robert Babjak, Marija Vranic·Feb 10, 2025SaveLearn
Applying the Liouville-Lanczos Method of Time-Dependent Density-Functional Theory to Warm Dense MatterAb initio modeling of dynamic structure factors (DSF) and related density response properties in the warm dense matter (WDM) regime is a challenging computational task. The DSF, convolved with a…Zhandos A. Moldabekov, Sebastian Schwalbe, Thomas Gawne et al.·Feb 7, 2025SaveLearn
Origin of the Recirculation Flow Pattern Induced by Nanosecond Discharges and Criterion for its DevelopmentNonequilibrium plasmas generated by spark discharges induce chemical, thermal, and flow dynamic effects that are beneficial in many applications such as plasmalysis, plasma-assisted combustion, and…Edouard Roger, Pierre Mariotto, Christophe O Laux·Feb 7, 2025SaveLearn
Transport Characteristics and Modelling of ST40 Hot Ion PlasmasIn this paper, the turbulent transport properties of ST40 hot ion plasmas are examined and fully predictive time evolving modelling of a hot ion plasma pulse was performed. Understanding turbulent…MS Anastopoulos Tzanis, MR Hardman, Y Zhang et al.·Feb 7, 2025SaveLearn
Influence of gas flow rate on modes of reactive oxygen and nitrogen species in a grid-type surface dielectric barrier dischargeThe presented work investigates a surface dielectric barrier discharge (SDBD) operated dry synthetic air as the working gas using a combination of experimental measurements and simulations. The…Angie Natalia Torres Segura, Kazumasa Ikuse, Satoshi Hamaguchi et al.·Feb 7, 2025SaveLearn
Overview of EXL-50 Research Progress and Future PlanXuanLong-50 (EXL-50) is the first medium-size spherical torus (ST) in China, with the toroidal field at major radius at 50 cm around 0.5T. CS-free and non-inductive current drive via electron…Yuejiang Shi, Yumin Wang, Bing Liu et al.·Feb 7, 2025SaveLearn
Intermittent, Reflection-Driven, Strong Imbalanced MHD TurbulenceWe develop a phenomenological model of strong imbalanced magnetohydrodynamic (MHD) turbulence that accounts for intermittency and the reflection of Alfven waves by spatial variations in the Alfven…B. D. G. Chandran, N. Sioulas, S. Bale et al.·Feb 7, 2025SaveLearn
Numerical study on wave attenuation via 2D fully kinetic electromagnetic particle-in-cell simulationsThe propagation and absorption of electromagnetic waves in plasma is one of the fundamental issues in plasma physics. The electromagnetic particle-in-cell method with the finite-difference…Fei Du, Yize Yan, Jingfeng Tang et al.·Feb 6, 2025SaveLearn
Simultaneous kinetic profile and magnetic equilibrium inference with Bayesian integrated data analysis in preparation for ITERAccurate plasma state reconstruction will be crucial for the success of ITER and future fusion plants, but the harsh conditions of a burning plasma will make diagnostic operation more challenging…S. S. Denk, T. B. Amara, T. Odstrcil et al.·Feb 6, 2025SaveLearn
A least Action principle for visco-resistive Hall Magnetohydrodynamic with metriplectic reformulationWe present a new variational formulation for Viscous and resistive Hall Magnetohydrodynamic. We first find a variational principle for ideal HMHD by applying the physical assumptions leading to HMHD…Valentin Carlier, Martin Campos-Pinto·Feb 6, 2025SaveLearn
Turbulence-Generated Stepped Safety Factor Profiles in Tokamaks with Low Magnetic ShearNonlinear local and global gyrokinetic simulations of tokamak plasmas demonstrate that turbulence-generated currents flatten the safety factor profile near low-order rational surfaces when magnetic…Arnas Volčokas, Justin Ball, Giovanni Di Giannatale et al.·Feb 6, 2025SaveLearn
Spatiotemporal dynamics of nanosecond pulsed discharge in the form of a fast ionization wave: self-consistent two-dimensional modeling and comparison with experiments under negative and positive polarityNanosecond discharges are characterized by a shift in energy branching toward the excitation of electronic levels and dissociation, making them particularly attractive for plasma chemistry.…Konstantinos Kourtzanidis, Svetlana M. Starikovskaia·Feb 6, 2025SaveLearn
Inhibition and promotion of quasi-uniform to filamentary discharge transition in negative repetitive nanosecond surface dielectric barrier dischargeThe transition from quasi-uniform to filamentary modes in a repetitive nanosecond Surface Dielectric Barrier Discharge(SDBD) under atmospheric pressure was studied. Our focus encompassed both…Zhang Yaqi, Guo Yulin, Zhu Yifei et al.·Feb 6, 2025SaveLearn
The Numerics of VMEC++VMEC++ is a Python-friendly, from-scratch reimplementation in C++ of the Variational Moments Equilibrium Code (VMEC), a fixed- and free-boundary ideal-MHD equilibrium solver for stellarators and…Jonathan Schilling·Feb 5, 2025SaveLearn
Nuclear Fusion Enhancement by Heavy Nuclear CatalystsWe seek to understand the effect of high electron density in the proximity of a heavy nucleus on the fusion reaction rates in a hot plasma phase. We investigate quantitatively the catalytic effect of…Christopher Grayson, Johann Rafelski·Feb 5, 2025SaveLearn
Maxwell-Vlasov-Uehling-Uhlenbeck (VUU) Simulation for Coupled Laser-Electron Dynamics in a Metal Irradiated by Ultrashort Intense Laser PulsesThe description of electron-electron scattering presents challenges in the microscopic modeling of the interaction of ultrashort intense laser pulses with solids. We extend the semiclassical approach…Mizuki Tani, Tomohito Otobe, Yasushi Shinohara et al.·Feb 5, 2025SaveLearn
Computational and Analytical Optimization of Helicon Antennas with a Fast Full Wave Solver Exploiting Azimuthal Fourier DecompositionPlasma wakefield accelerators (PWA), such as AWAKE, require homogenous high-density plasmas. The Madison AWAKE Prototype (MAP) has been built to create a uniform argon plasma in the…Marcel Granetzny, Oliver Schmitz·Feb 4, 2025SaveLearn
Ponderomotive barriers in rotating mirror devices using static fieldsParticularly for aneutronic fusion schemes, it is advantageous to manipulate the fuel species differently from one another, as well as expel ash promptly. The ponderomotive effect can be used to…Tal Rubin, Nathaniel J. Fisch·Feb 4, 2025SaveLearn
General kinetic ion induced electron emission model for metallic walls applied to biased Z-pinch electrodesA kinetic ion induced electron emission (IIEE) model for general applications is developed to obtain the emitted electron energy spectrum for a distribution of ion impacts on a metallic surface. We…Chirag R. Skolar, Kolter Bradshaw, Manaure Francisquez et al.·Feb 3, 2025SaveLearn
Magnetic Field Amplification and Reconstruction in Rotating Astrophysical Plasmas: Verifying the Roles of α and β in Dynamo ActionWe investigated the α and β effects in a rotating spherical plasma system relevant to astrophysical environments. These coefficients were derived using three different approaches based on the…Kiwan Park·Feb 3, 2025SaveLearn
Efficient analysis of magnetic field line behavior in toroidal plasmasThe confinement of plasmas in tokamaks and stellarators depends on magnetic field lines lying in nested toroidal surfaces. The transition near the plasma edge away from the lines lying in magnetic…Allen H Boozer·Feb 3, 2025SaveLearn
Computing the generalized plasma dispersion function for non-Maxwellian plasmas, with applications to Thomson scatteringKinetic plasma studies often require computing integrals of the velocity distribution over a complex-valued pole. The standard method is to solve the integral in the complex plane using the Plemelj…Chirag R. Skolar, William J. Longley, Lindsay V. Goodwin·Feb 3, 2025SaveLearn