Superlubric-pinned transition of a two-dimensional solid dusty plasma under a periodic triangular substrateThe superlubric-pinned transition in the depinning dynamics of a two-dimensional (2D) solid dusty plasma modulated by 2D triangular periodic substrates is investigated using Langevin dynamical…Y. Huang, C. Reichhardt, C. J. O. Reichhardt et al.·Jul 22, 2022SaveLearn
Hydrodynamic impacts of short laser pulses on plasmasWe determine conditions allowing to simplify the description of the impact of a short and arbitrarily intense laser pulse onto a cold plasma at rest. If both the initial plasma density and pulse…Gaetano Fiore, Monica De Angelis, Renato Fedele et al.·Jul 22, 2022SaveLearn
Planar Laser Induced Fluorescence Mapping of a Carbon Laser Produced PlasmaWe present measurements of ion velocity distribution profiles obtained by laser induced fluorescence (LIF) on an explosive laser produced plasma (LPP). The spatio-temporal evolution of the resulting…R. S. Dorst, C. G. Constantin, D. B. Schaeffer et al.·Jul 22, 2022SaveLearn
Impact of pedestal density gradient and collisionality on ELM dynamicsBOUT++ turbulence simulations are conducted to capture the underlying physics of the small ELM characteristics achieved by increasing separatrix density via controlling strike points from vertical to…Nami Li, X. Q. Xu, Y. F. Wang et al.·Jul 21, 2022SaveLearn
Lagrangian particle simulation of hydrogen pellets and SPI into runaway electron beam in ITERNumerical studies of the ablation of pellets and shattered pellet injection (SPI) fragments into a runaway electron beam in ITER have been performed using a time-dependent pellet ablation code [R.…Shaohua Yuan, Nizar Naitlho, Roman Samulyak et al.·Jul 20, 2022SaveLearn
Cooling flow regime of a plasma thermal quenchA large class of Laboratory, Space, and Astrophysical plasmas is nearly collisionless. When a localized energy or particle sink, for example, in the form of a radiative cooling spot or a black hole,…Yanzeng Zhang, Jun Li, Xian-Zhu Tang·Jul 20, 2022SaveLearn
Microtearing turbulence saturation via electron temperature flattening at low-order rational surfacesMicrotearing instability is one of the major sources of turbulent transport in high-β tokamaks. These modes lead to very localized transport at low-order rational magnetic field lines, and we show…Ajay C. J., Ben McMillan, M. J. Pueschel·Jul 19, 2022SaveLearn
Maximum entropy states of collisionless positron-electron plasma in a dipole magnetic fieldWe are developing a positron-electron plasma trap based on a dipole magnetic field generated by a levitated superconducting magnet to investigate the physics of magnetized plasmas with mass symmetry…Naoki Sato·Jul 19, 2022SaveLearn
Evidence of oblique electron acoustic solitary waves triggered by magnetic reconnection in Earth's magnetosphereMotivated by the recent Magnetospheric Multiscale (MMS) observations of oblique electron acoustic waves, we addressed the generation mechanism of the observed waves by utilizing the reductive…A. Atteya, S. K. EL-Labany, P. K. Karmakar et al.·Jul 19, 2022SaveLearn
Momentum Injection via Dielectric Barrier Discharge Actuators in Low-Speed External FlowDielectric barrier discharge (DBD) plasma actuators can generate a wall jet without moving parts through interaction between ionized and neutral molecules in an electric field. The coupling between…Anthony Tang, Benjamin Price, Alexander Mamishev et al.·Jul 19, 2022SaveLearn
Verifying raytracing/Fokker-Planck lower-hybrid current drive predictions with self-consistent full-wave/Fokker-Planck simulationsRaytracing/Fokker-Planck (FP) simulations used to model lower-hybrid current drive (LHCD) often fail to reproduce experimental results, particularly when LHCD is weakly damped. A proposed reason for…S. J. Frank, J. P. Lee, J. C. Wright et al.·Jul 19, 2022SaveLearn
Creation and direct laser acceleration of positrons in a single stageRelativistic positron beams are required for fundamental research in nonlinear strong field QED, plasma physics, and laboratory astrophysics. Positrons are difficult to create and manipulate due to…B. Martinez, B. Barbosa, M. Vranic·Jul 18, 2022SaveLearn
Radiative pulsed L-mode operation in ARC-class reactorsA new ARC-class, highly-radiative, pulsed, L-mode, burning plasma scenario is developed and evaluated as a candidate for future tokamak reactors. Pulsed inductive operation alleviates the stringent…S. J. Frank, C. J. Perks, A. O. Nelson et al.·Jul 18, 2022SaveLearn
Nonlinear magnetohydrodynamic modeling of current-drive-induced sawtooth-like crashes in the W7-X stellaratorSawtooth-like core electron temperature crashes have been observed in W7-X experiments with electron cyclotron current drive. We present nonlinear single-fluid magnetohydrodynamic simulations of this…Yao Zhou, K. Aleynikova, N. M. Ferraro·Jul 18, 2022SaveLearn
Permanent magnet optimization for stellarators as sparse regressionA common scientific inverse problem is the placement of magnets that produce a desired magnetic field inside a prescribed volume. This is a key component of stellarator design, and recently permanent…Alan A. Kaptanoglu, Tony Qian, Florian Wechsung et al.·Jul 18, 2022SaveLearn
Bunched proton acceleration from a laser-irradiated cone targetLaser-driven ion acceleration is an attractive technique for compact high-energy ion sources. Currently, among various physical and technical issues to be solved, the boost of ion energy and the…Xing-Long Zhu, Wei-Yuan Liu, Min Chen et al.·Jul 16, 2022SaveLearn
Acceleration of 60 MeV proton beams in the commissioning experiment of SULF-10 PW laserWe report the experimental results of the commissioning phase in the 10 PW laser beamline of Shanghai Superintense Ultrafast Laser Facility (SULF). The peak power reaches 2.4 PW on target without the…A. X. Li, C. Y. Qin, H. Zhang et al.·Jul 15, 2022SaveLearn
Stimulated-Raman-scattering amplification of attosecond XUV pulses with pulse-train pumps and application to local in-depth plasma-density measurementWe present a scheme for amplifying an extreme-ultraviolet (XUV) seed isolated attosecond pulse via stimulated Raman scattering of a pulse-train pump. At sufficient seed and pump intensity, the…Andréas Sundström, Mickael Grech, István Pusztai et al.·Jul 14, 2022SaveLearn
Mesoscopic transport in KSTAR plasmas: avalanches and the E × B staircaseThe self-organization is one of the most interesting phenomena in the non-equilibrium complex system, generating ordered structures of different sizes and durations. In tokamak plasmas, various…Minjun J. Choi, Jae-Min Kwon, Lei Qi et al.·Jul 14, 2022SaveLearn
In Search of a Data Driven Symbolic Multi-Fluid 10-Moment Model ClosureThe inclusion of kinetic effects into fluid models has been a long standing problem in magnetic reconnection and plasma physics. Generally the pressure tensor is reduced to a scalar which is an…John Donaghy, Kai Germaschewski·Jul 13, 2022SaveLearn
Mode Control of Electro-Magnetic Pulses in the VHF BandWe present experimental results for the controlled mitigation of electromagnetic pulses (EMP) produced in interactions of the 1PW high-power 30fs Ti:Sa laser VEGA-3 with matter. This study aims at…M. Ehret, L. Volpe, J. I. Apiñaniz et al.·Jul 13, 2022SaveLearn
A machine-learning-based tool for last closed-flux surface reconstruction on tokamaksNuclear fusion represents one of the best alternatives for a sustainable source of clean energy. Tokamaks allow to confine fusion plasma with magnetic fields and one of the main challenges in the…Chenguang Wan, Zhi Yu, Alessandro Pau et al.·Jul 12, 2022SaveLearn
Beyond the Oberbeck-Boussinesq and long wavelength approximationWe present the first simulations of a reduced magnetized plasma model that incorporates both arbitrary wavelength polarization and non-Oberbeck-Boussinesq effects. Significant influence of these two…Markus Held, Matthias Wiesenberger·Jul 12, 2022SaveLearn
Generation and delivery of free hydroxyl radicals using a remote plasmaWe demonstrate a new gas-based OH generation source using a low power RF-driven atmospheric pressure plasma configured to deliver the radical flux into the far effluent region, well away from…Harold McQuaid, David Rutherford, Davide Mariotti et al.·Jul 10, 2022SaveLearn
Experimental Evidence of Plasmoids in High-β Magnetic ReconnectionMagnetic reconnection is a ubiquitous and fundamental process in plasmas by which magnetic fields change their topology and release magnetic energy. Despite decades of research, the physics governing…J. A. Pearcy, M. J. Rosenberg, T. M. Johnson et al.·Jul 8, 2022SaveLearn