Plasmoid formation and strong radiative cooling in a driven magnetic reconnection experimentWe present results from the first experimental study of strongly radiatively-cooled magnetic reconnection. Two exploding aluminum wire arrays, driven simultaneously by the Z machine ($Imax = 20 \,…R. Datta, K. Chandler, C. E. Myers et al.·Jan 9, 2024SaveLearn
Ion temperature gradient mode mitigation by energetic particles, mediated by forced-driven zonal flowsIn this work, we use the global electromagnetic and electrostatic gyro kinetic approaches to investigate the effects of zonal flows forced-driven by Alfvén modes due to their excitation by energetic…Juvert Njeck Sama, Alessandro Biancalani, Alberto Bottino et al.·Jan 9, 2024SaveLearn
Nonlinear solution of classical three-wave interaction via finite dimensional quantum modelThe quantum three-wave interaction, the lowest order nonlinear interaction in plasma physics, describes energy-momentum transfer between three resonant waves in the quantum regime. We describe how it…Michael May, Hong Qin·Jan 8, 2024SaveLearn
Gyrofluid simulations of turbulence and reconnection in space plasmasA Hamiltonian two-field gyrofluid model is used to investigate the dynamics of an electron-ion collisionless plasma subject to a strong ambient magnetic field, within a spectral range extending from…T. Passot, S. S. Cerri, C. Granier et al.·Jan 8, 2024SaveLearn
Modelling of power exhaust in TCV positive and negative triangularity L-mode plasmasL-mode negative triangularity (NT) operation is a promising alternative to the positive triangularity (PT) H-mode as a high-confinement ELM-free operational regime. In this work, two TCV L-mode lower…E. Tonello, F. Mombelli, O. Février et al.·Jan 8, 2024SaveLearn
Effects of multi-dimensionality and energy exchange on electrostatic current-driven plasma instabilities and turbulenceLarge-amplitude current-driven plasma instabilities, which can transition to the Buneman instability, were observed in one-dimensional (1D) simulations to generate high-energy backstreaming ions. We…Wai Hong Ronald Chan, Kentaro Hara, Iain D. Boyd·Jan 5, 2024SaveLearn
Advancing technologies for high-resolution spatial and temporal measurements of macroscopic stellarator flowsStellarators, together with tokamaks, represent the two mainstream approaches to realizing fusion energy via toroidal magnetic confinement of highly ionized gases - plasmas - at extremely high…A. M. Wright, D. J Den Hartog, B. Geiger et al.·Jan 5, 2024SaveLearn
Resonant Decay of Kinetic Alfvén Waves and Implication on Spectral CascadingA general equation describing the resonant nonlinear mode-coupling among kinetic Alfvén waves (KAWs) is derived using nonlinear gyrokinetic theory, which can be applied to study the potentially…Kexun Shen, Zhiwen Cheng, Zhiyong Qiu·Jan 5, 2024SaveLearn
The Collisional Particle-In-Cell Method for the Vlasov-Maxwell-Landau EquationsWe introduce an extension of the particle-in-cell (PIC) method that captures the Landau collisional effects in the Vlasov-Maxwell-Landau equations. The method arises from a regularisation of the…Rafael Bailo, José A. Carrillo, Jingwei Hu·Jan 3, 2024SaveLearn
Simulations of Radiatively Cooled Magnetic Reconnection Driven by Pulsed PowerMagnetic reconnection is an important process in astrophysical environments, as it re-configures magnetic field topology and converts magnetic energy into thermal and kinetic energy. In extreme…Rishabh Datta, Aidan J. Crilly, Jeremy P. Chittenden et al.·Jan 3, 2024SaveLearn
RHDLPP: A multigroup radiation hydrodynamics code for laser-produced plasmasWe introduce the RHDLPP, a flux-limited multigroup radiation hydrodynamics numerical code designed for simulating laser-produced plasmas in diverse environments. The code bifurcates into two…Qi Min, Ziyang Xu, Siqi He et al.·Jan 3, 2024SaveLearn
Roles of non-axisymmetric perturbations in free drift vertical displacement events on EASTThe safe operation of most tokamaks, especially the largen sized ones, rely on the feedback control of the vertical displacement events (VDEs). However, most these feedback control systems are based…Haolong Li, Ping Zhu, Hang Li et al.·Jan 2, 2024SaveLearn
A Two-dimensional Numerical Study of Ion-Acoustic TurbulenceWe investigate the linear and nonlinear evolution of the ion-acoustic instability in a collisionless plasma via two-dimensional (2D2V) Vlasov-Poisson numerical simulations. We initialize the system…Zhuo Liu, Ryan White, Lucio M. Milanese et al.·Jan 2, 2024SaveLearn
Particle propagation and electron transport in gasesIn this review, we detail the commonality of mathematical intuitions that underlie three numerical methods used for the quantitative description of electron swarms propagating in a gas under the…Luca Vialetto, Hirotake Sugawara, Savino Longo·Dec 31, 2023SaveLearn
Autoregressive Transformers for Disruption Prediction in Nuclear Fusion PlasmasThe physical sciences require models tailored to specific nuances of different dynamics. In this work, we study outcome predictions in nuclear fusion tokamaks, where a major challenge are…Lucas Spangher, William Arnold, Alexander Spangher et al.·Dec 29, 2023SaveLearn
Presheath-like structures and effusive particle losses for biased probes at and near I-V electron saturationA theory for presheath-like structures near probes biased at and above the plasma potential is developed for collisionless plasmas with an electron-neutral mean free path on the order of the chamber…Brett Scheiner·Dec 29, 2023SaveLearn
Monitoring of nanoplasmonics-assisted deuterium production in a polymer seeded with resonant Au nanorods using in situ femtosecond laser induced breakdown spectroscopyIn this brief report, we present laser induced breakdown spectroscopy (LIBS) evidence of deuterium (D) production in a 3:1 urethane dimethacrylate (UDMA) and triethylene glycol dimethacrylate…N. Kroó, M. Aladi, M. Kedves et al.·Dec 27, 2023SaveLearn
Global gyrokinetic simulation of magnetic island induced ion temperature gradient turbulence in toroidal plasmaThe characteristics of ion temperature gradient (ITG) turbulence in the presence of a magnetic island are numerically investigated using a gyrokinetic model. We observe that in the absence of the…Jingchun Li, J. Bao, Z. Lin et al.·Dec 27, 2023SaveLearn
Novel Instabilities in Counter-Streaming Nonabelian FluidsThe dynamics of strongly interacting particles are governed by Yang-Mills (Y-M) theory, which is a natural generalization of Maxwell Electrodynamics (ED). Its quantized version is known as quantum…Subramanya Bhat K N, Amita Das, V Ravishankar et al.·Dec 27, 2023SaveLearn
Efficiency of plasmochemical production of hydrogen from propane under the influence of laser radiationThe plasma-chemical process of producing hydrogen from propane under the excitation by laser radiation has been studied. The study was carried out using femtosecond (35 fs) and nanosecond (7 ns)…Yu. S. Tveryanovich, A. V. Povolotskiy, S. S. Lunkov·Dec 27, 2023SaveLearn
Effect of detachment on Magnum-PSI ELM-like pulses: II. Spectroscopic analysis and role of molecular assisted reactionsThe linear plasma machine Magnum-PSI can replicate similar conditions to those found in a tokamak at the end of the divertor leg. A dedicated capacitor bank, in parallel to the plasma source, can…Fabio Federici, Bruce Lipschultz, Gijs R. A. Akkermans et al.·Dec 26, 2023SaveLearn
PIC-JRhom: a pseudo-spectral Particle-In-Cell formulation with arbitrary charge and current densities time dependencies for the modeling of relativistic plasmasThis paper introduces a novel formulation of the Particle-In-Cell (PIC) method for the modeling of relativistic plasmas, which leverages the ability of the Pseudo-Spectral Analytical Time-Domain…Olga Shapoval, Edoardo Zoni, Remi Lehe et al.·Dec 26, 2023SaveLearn
Response of negative ion beamlet to RF field in beam extraction regionBeam-focusing characteristics of negative ion beams have been experimentally investigated with a superimposition of a controlled perturbation of RF field in a filament-arc discharge negative ion…Kenichi Nagaoka, Haruhisa Nakano, Taiga Hamajima et al.·Dec 25, 2023SaveLearn
Particle-In-Cell Code Comparison for Ion Acceleration: EPOCH and SmileiParticle-in-Cell (PIC) codes are a popular tool to model laser-plasma interactions. Many different PIC codes already exist, and many new PIC codes are being developed constantly. It is therefore…Soham Banerjee, Joseph R. Smith, Chris Orban·Dec 25, 2023SaveLearn
On the Cascade-Dissipation Balance in Astrophysical PlasmasThe differential heating of electrons and ions by turbulence in weakly collisional magnetized plasmas and the scales at which such energy dissipation is most effective are still debated. Using a…Davide Manzini, Fouad Sahraoui, Francesco Califano·Dec 23, 2023SaveLearn