Suppression of two stream instability in relativistic electron-ion plasmasThis paper investigates the suppression of two stream instabilities in electron ion plasmas when the individual species attain relativistic velocities. This suppression of the growth rate of two…Vivek Shrivastav, Mani K Chettri, Hemam D Singh et al.·Aug 20, 2025SaveLearn
Excitation of toroidal Alfvén eigenmode by energetic particles in DTT and effect of negative triangularityA linear gyrokinetic eigenvalue code is developed to study the stability of toroidal Alfvén eigenmode (TAE) in general axisymmetric toroidal geometry, with the self-consistent treatment of energetic…Guangyu Wei, Fulvio Zonca, Matteo Valerio Falessi et al.·Aug 20, 2025SaveLearn
Numerical simulations of a RF-RF hybrid plasma torch with argon at atmospheric pressureWe report numerical results regarding the minimum sustaining coil excitation current for a RF-RF hybrid torch operating at two different frequencies. The first coil is excited at a high-frequency,…Loann Terraz, Biruk Alemu, Santiago Eizaguirre·Aug 19, 2025SaveLearn
Control of a Uniformly Magnetized Plasma with External Electric FieldsStabilizing plasma dynamics through externally applied electric and magnetic fields is a fundamental control problem. We study this question for a plasma evolving under a uniform external magnetic…Peiyi Chen, Rogerio Jorge, Qin Li et al.·Aug 19, 2025SaveLearn
A Bayesian approach to time-domain Photonic Doppler VelocimetryPhotonic Doppler Velocimetry (PDV) is an established technique for measuring the velocities of fast-moving surfaces in high-energy-density experiments. In the standard approach to PDV analysis, a…J. R. Allison, R. Bordas, J. Read et al.·Aug 19, 2025SaveLearn
Impulsive excitation of a solid by extreme contrast, high intensity femtosecond laser pulsesWe present the ultra-fast dynamics of the interaction between a high-intensity extreme contrast (expected to be around 1e-18 at hundreds of picoseconds timescale) femtosecond laser and a solid.…Sagar Dam, Jian Fuh Ong, Sk Rakeeb et al.·Aug 19, 2025SaveLearn
Free electron charging of microdroplets in a plasma at atmospheric pressureGas-phase microdroplets have recently demonstrated exceptional chemical properties via suspected mechanisms such as contact electrification and surface charge pinning, producing high surface electric…Nourhan Hendawy, Harold McQuaid, Somhairle Mag Uidhir et al.·Aug 18, 2025SaveLearn
Eliminating Tokamak Disruptions with FeedbackMany disruptions are caused by resistive wall tearing modes (RWTM). A database of DIII-D locked mode disruptions provides two main disruption criteria, which are shown to be signatures of RWTMs. The…H. R. Strauss·Aug 18, 2025SaveLearn
Resistive diffusion and radiative cooling effects in magnetized oblique shocksMagnetized oblique shocks are of interest in various plasmas, including in astrophysical systems, magneto-inertial confinement fusion experiments, and in aerospace applications. Through experiments…R. Datta, E. Neill, E. Freeman et al.·Aug 18, 2025SaveLearn
Current sheet formation under radiative coolingWe present a simple, analytically solvable MHD model of current sheet formation through X-point collapse under optically thin radiative cooling. Our results show that cooling accelerates the collapse…Simran Chowdhry, Nuno F. Loureiro·Aug 18, 2025SaveLearn
Density and Particle Sourcing Optimization in a Helicon Plasma Source Prototype For Wakefield Accelerator ApplicationsHelicon plasmas are being considered as plasma sources for wakefield accelerators, subject to strict density requirements. We present various mechanisms to increase axial density homogeneity in a…Michael Zepp, Marcel Granetzny, Oliver Schmitz·Aug 18, 2025SaveLearn
A geometric approach to constructing quasi-isodynamic fieldsThe near-axis theory for quasi-isodynamic stellarator equilibria is reformulated in terms of geometric inputs, to allow greater control of the ``direct construction'' of quasi-isodynamic…G. G. Plunk, E. Rodríguez·Aug 18, 2025SaveLearn
Thermodynamically consistent modeling and simulation of two-fluid magnetohydrodynamic equationsBased on a rigorous thermodynamic framework, this work develops a two-fluid magnetohydrodynamic model grounded in the Helmholtz free energy formalism. The model maintains full thermodynamic…Ting Xiao, Qiaolin He·Aug 17, 2025SaveLearn
The Chapman-Enskog Divergence Problem in Plasma Transport: Structural Limitations and a Practical Regularization ApproachWe calculate transport coefficients from the Chapman--Enskog expansion with BGK collision operators, obtaining exactly κ= 5nT2mν, and show that maximum entropy closure yields identical…Justo Karell·Aug 17, 2025SaveLearn
Scaling Laws in Plasma Channels for Laser Wakefield AcceleratorsPreformed plasma channels are essential for guiding high-power laser pulses over extended distances in laser wakefield accelerators, enabling the generation of multi-GeV electron beams for…Tianliang Zhang, Jianyi Liu, Shuang Liu et al.·Aug 15, 2025SaveLearn
A Detailed Configuration Accounting for the Hot Plasma Bound-Free Opacity CalculationThe calculation of the hot plasma bound-free opacity according to the average atom models often leads to a noticeable effect of initial configuration on the shell ionization threshold. For the…Alina Nadezhkina, Mikhail Vronskiy·Aug 15, 2025SaveLearn
Accelerated Solvers for Neutral Particle Dynamics in Plasma SimulationThe simulation of turbulence in the boundary region of a tokamak is crucial for understanding and optimizing the performance of fusion reactors. In this work, the use of low-rank linear algebra…Margherita Guido, Daniel Kressner, Davide Mancini et al.·Aug 15, 2025SaveLearn
Pump with broadband probe experiments for single-shot measurements of plasma conditions and crossed-beam energy transferA novel technique for measuring plasma conditions using monochromatic pump-broadband probe laser interactions has been experimentally demonstrated. Originally proposed in [J. Ludwig et al., Phys.…A. Longman, R. Muir, D. Mittelberger et al.·Aug 15, 2025SaveLearn
Towards controlling electron charge with nanoparticle assisted laser wakefield acceleratorsThis study explores nanoparticle-assisted electron injection as a method for controlling beam charge in laser wakefield acceleration through particle-in-cell simulations. We systematically…Alžběta Špádová, Petr Valenta, Sebastian Lorenz et al.·Aug 14, 2025SaveLearn
Probing ultrafast heating and ionization dynamics in solid density plasmas with time-resolved resonant X-ray absorption and emissionHeating and ionization are among the most fundamental processes in relativistic laser--solid interactions; however, their spatiotemporal evolution remains challenging to capture experimentally. Here…Lingen Huang, Mikhail Mishchenko, Michal Šmíd et al.·Aug 14, 2025SaveLearn
Bridging the Gap between Collisional and Collisionless Plasma Shocks: A Simulation Study using OSIRISShock waves in plasmas can be characterized by the mechanisms behind their formation. When binary collisions are frequent, dissipation is collision-driven and the shock width is a few mean free…Yossef Nissim Kindi, Asaf Pe'er, Antoine Bret et al.·Aug 14, 2025SaveLearn
Double-Corrugated Degenerate Band-Edge Oscillator Driven by an Electron BeamThe properties of a degenerate band-edge (DBE) oscillator based on the synchronous interaction between a linear electron beam synchronized with four degenerate electromagnetic modes are presented.…Miguel Saavedra-Melo, Robert Marosi, Nelson Castro et al.·Aug 14, 2025SaveLearn
Energy Bunching from Sub-Cycle Ionization Injection in Laser Wakefield AccelerationWe report the first experimental observation of carrier-envelope phase-driven energy bunching in laser wakefield acceleration. Using a few-cycle (~9 fs), multi-terawatt laser pulse and ionization…A. Angella, E. Löfquist, C. Gustafsson et al.·Aug 14, 2025SaveLearn
Multiphysics Simulation and First Prototype Development of a Microwave Plasma System for Chemical Vapour Deposition (CVD) ApplicationsWith the aid of COMSOL multiphysics simulations, a compact microwave plasma reactor operated at 2.45 GHz frequency has been designed for diamond film deposition. The reactor consists of a cylindrical…Akash Akash, Sanjeev Kumar Pandey, Venkata Sai Teja Madana et al.·Aug 14, 2025SaveLearn
Extracting a stochastic model for predator-prey dynamic of turbulence and zonal flows with limited dataUnderstanding the interaction between turbulence and zonal flows is critical for modeling turbulence transport in fusion plasmas, often described through predator-prey dynamics. However, traditional…J. C. Huang, Z. S. Qu, R. Varennes et al.·Aug 14, 2025SaveLearn