PIC simulations of stable surface waves on a subcritical fast magnetosonic shock frontWe study with particle-in-cell (PIC) simulations the stability of fast magnetosonic shocks. They expand across a collisionless plasma and an orthogonal magnetic field that is aligned with one of the…M E Dieckmann, C Huete, F Cobos et al.·Jul 14, 2023SaveLearn
Laboratory Study of Collisionless Magnetic ReconnectionA concise review is given on the past two decades' results from laboratory experiments on collisionless magnetic reconnection in direct relation with space measurements, especially by…H. Ji, J. Yoo, W. Fox et al.·Jul 14, 2023SaveLearn
Helicon waves in a converging-diverging magnetoplasmaWaves propagating along a converging-diverging rf magnetoplasma having the characteristics of a bounded m=0 helicon mode are reported and characterised. The discharge features a 30 cm separation…Félicien Filleul, Antonella Caldarelli, Kazunori Takahashi et al.·Jul 13, 2023SaveLearn
Energization of charged test particles in magnetohydrodynamic fields: waves vs turbulence pictureDirect numerical simulations of 3D compressible MHD turbulence were performed in order to study the relation between waves modes and coherent structures and the consequent energization of test…F. Pugliese, M. Brodiano, N. Andrés et al.·Jul 13, 2023SaveLearn
Experimental investigation of kinetic instabilities driven by runaway electrons in the EXL-50 spherical torusIn this study, the first observation of high-frequency instabilities driven by runaway electrons has been reported in the EXL-50 spherical torus using a high-frequency magnetic pickup coil. The…Mingyuan Wang, Mingsheng Tan, Yuejiang Shi et al.·Jul 13, 2023SaveLearn
Observation of whistler wave instability driven by temperature anisotropy of energetic electrons on EXL-50 spherical torusElectromagnetic modes in the frequency range of 30-120MHz were observed in electron cyclotron wave (ECW) steady state plasmas on the ENN XuanLong-50 (EXL-50) spherical torus. These modes were found…Mingyuan Wang, Yuejiang Shi, Jiaqi Dong et al.·Jul 13, 2023SaveLearn
Photon and neutron production as in-situ diagnostics of proton-boron fusionShort-pulse, ultra high-intensity lasers have opened new regimes for studying fusion plasmas and creating novel ultra-short ion beams and neutron sources. Diagnosing the plasma in these experiments…B. M. Hegelich, L. Labun, O. Z. Labun et al.·Jul 12, 2023SaveLearn
Stationary striations in plasma, created by a short microwave pulse in a waveguide filled with a neutral gasIt was observed experimentally that after crossing a waveguide filled with a neutral gas, a short powerful microwave pulse leaves a periodic glow of plasma along the waveguide, persisting several…Y. Bliokh, Y. Cao, V. Maksimov et al.·Jul 11, 2023SaveLearn
Laser light scattering (LLS) to observe plasma impact on the adhesion of micrometer-sized particles to a surfaceLaser Light Scattering (LLS) method, combined with a long-distance microscope was utilized to detect micrometer-sized particles on a smooth substrate. LLS was capable to detect individual particle…D. Shefer, A. Nikipelov, M. van de Kerkhof et al.·Jul 11, 2023SaveLearn
Measurements of dense fuel hydrodynamics in the NIF burning plasma experiments using backscattered neutron spectroscopyThe hydrodynamics of the dense confining fuel shell is of great importance in defining the behaviour of the burning plasma and burn propagation regimes of inertial confinement fusion experiments.…A. J. Crilly, D. J. Schlossberg, B. D. Appelbe et al.·Jul 11, 2023SaveLearn
A self-sustaining mechanism for Internal Transport Barrier formation in HL-2A tokamak plasmasThe formation of Internal Transport Barrier (ITB) is studied in HL-2A plasmas by means of nonlinear gyrokinetic simulations. A new paradigm for the ITB formation is proposed in which different…W. H. Lin, J. Garcia, J. Q. Li et al.·Jul 11, 2023SaveLearn
Graph Representation of the Magnetic Field Topology in High-Fidelity Plasma Simulations for Machine Learning ApplicationsTopological analysis of the magnetic field in simulated plasmas allows the study of various physical phenomena in a wide range of settings. One such application is magnetic reconnection, a phenomenon…Ioanna Bouri, Fanni Franssila, Markku Alho et al.·Jul 10, 2023SaveLearn
Inverse cascading for initial MHD turbulence spectra between Saffman and BatchelorIn decaying magnetohydrodynamic (MHD) turbulence with a strong magnetic field, the spectral magnetic energy density is known to increase with time at small wavenumbers k, provided the spectrum at…Axel Brandenburg, Ramkishor Sharma, Tanmay Vachaspati·Jul 10, 2023SaveLearn
Full-F Turbulent Simulation in a Linear Device using a Gyro-Moment ApproachSimulations of plasma turbulence in a linear plasma device configuration are presented. These simulations are based on a simplified version of the gyrokinetic (GK) model proposed by B. J. Frei et al.…B. J. Frei, J. Mencke, P. Ricci·Jul 10, 2023SaveLearn
Core localized alpha-channeling via low frequency Alfven mode generation in reversed shear scenariosA novel channel for fuel ions heating in tokamak core plasma is proposed and analyzed using nonlinear gyrokinetic theory. The channel is achieved via spontaneous decay of reversed shear Alfvén…Zhiyong Qiu, Shizhao Wei, Tao Wang et al.·Jul 10, 2023SaveLearn
Collimated hot electron generation from sub-wavelength grating target irradiated by a femtosecond laser pulse of relativistic intensityWe investigate the production of hot electrons from the interaction of relativistically intense (I> 1018 W/cm2) ultra-short (25 fs) laser pulses with sub-wavelength grating target. We measure…Kamalesh Jana, Amit D. Lad, Guo-Bo Zhang et al.·Jul 10, 2023SaveLearn
Hydrogen from Cellulose and Low-density Polyethylene via Atmospheric Pressure Nonthermal PlasmaThe valorization of waste, by creating economic value while limiting environmental impact, can have an essential role in sustainable development. Particularly, polymeric waste such as biomass and…Benard Tabu, Visal Veng, Heba Morgan et al.·Jul 9, 2023SaveLearn
First bromine doped cryogenic implosion at the National Ignition FacilityWe report on the first experiment dedicated to the study of nuclear reactions on dopants in a cryogenic capsule at the National Ignition Facility (NIF). This was accomplished using bromine doping in…A. C. Hayes, G. Kyrala, M. Gooden et al.·Jul 7, 2023SaveLearn
Species dependence of the impurity injection induced poloidal flow and magnetic island rotation in a tokamakRecent experiments have demonstrated the species dependence of the impurity poloidal drift direction along with the magnetic island rotation in the poloidal plane. Our resistive MHD simulations have…Shiyong Zeng, Ping Zhu, Haijun Ren·Jul 7, 2023SaveLearn
Available energy of trapped electrons in Miller tokamak equilibriaAvailable energy (Æ), which quantifies the maximum amount of thermal energy that may be liberated and converted into instabilities and turbulence, has shown to be a useful metric for predicting…R. J. J. Mackenbach, J. H. E. Proll, G. Snoep et al.·Jul 5, 2023SaveLearn
Kinetic theory for spin-polarized relativistic plasmasThe investigation of spin and polarization effects in ultra-high intensity laser-plasma and laser-beam interactions has become an emergent topic in high-field science recently. In this paper we…Daniel Seipt, Alec G. R. Thomas·Jul 5, 2023SaveLearn
Electromagnetic gyrokinetic instabilities in STEPWe present herein the results of a linear gyrokinetic analysis of electromagnetic microinstabilites in the conceptual high-β, reactor-scale, tight-aspect-ratio tokamak STEP (Spherical Tokamak for…Daniel Kennedy, Maurizio Giacomin, Francis J Casson et al.·Jul 4, 2023SaveLearn
On electromagnetic turbulence and transport in STEPIn this work, we present first-of-their-kind nonlinear local gyrokinetic simulations of electromagnetic turbulence at mid-radius in the burning plasma phase of the conceptual high-β, reactor-scale,…Maurizio Giacomin, Daniel Kennedy, Francis J Casson et al.·Jul 4, 2023SaveLearn
Stochastic and self-consistent 3D modeling of streamer discharge trees with Kinetic Monte CarloThis paper contains the foundation for a new Particle-In-Cell model for gas discharges, based on Ito diffusion and Kinetic Monte Carlo (KMC). In the new model the electrons are described with a…Robert Marskar·Jul 4, 2023SaveLearn
Electron slingshot acceleration in relativistic preturbulent shocks explored via emitted photon polarizationTransient electron dynamics near the interface of counterstreaming plasmas at the onset of a relativistic collisionless shock (RCS) is investigated using particle-in-cell simulations. We identify a…Zheng Gong, Xiaofei Shen, Karen Z. Hatsagortsyan et al.·Jul 3, 2023SaveLearn