Modification of Lie's transform perturbation theory for charged particle motion in a magnetic fieldIt is pointed out that the conventional Lie transform perturbation theory for the guiding center motion of charged particles in a magnetic field needs to be modified for ordering inconsistency. There…Linjin Zheng·Apr 6, 2023SaveLearn
Particle transport through localized interactions with sharp magnetic field bends in MHD turbulenceWhen a particle crosses a region of space where the curvature radius of the magnetic field line shrinks below its gyroradius r g, it experiences a non-adiabatic (magnetic moment violating)…Martin Lemoine·Apr 6, 2023SaveLearn
Anisotropic field ionization in nano-clusters mediated by Brunel-electron driven plasma wavesIonization is one of the most fundamental processes in intense laser-matter interaction. It is extremely efficient for clusters in laser fields and often leads to surprisingly high charge states at…Xiaohui Gao·Apr 6, 2023SaveLearn
First results from beam emission spectroscopy in SPIDER negative ion sourceThe SPIDER experiment, part of the Neutral Beam Test Facility (NBTF) at Consorzio RFX (Padua, Italy), is the prototype of the negative ion source for the ITER neutral beam injectors; the source is…M. Barbisan, B. Zaniol, R. Pasqualotto et al.·Apr 6, 2023SaveLearn
Partial Discharges detection in 1 MV power supplies in MITICA experiment, the ITER Heating Neutral Beam Injector prototypeMITICA (Megavolt ITER Injector & Concept Advancement), the full scale prototype of ITER Heating Neutral Beam, is under realization at the Neutral Beam Test Facility (Padova, Italy). It is designed to…Marco Boldrin, Mattia Dan, Vanni Toigo et al.·Apr 5, 2023SaveLearn
Overview on electrical issues faced during the SPIDER experimental campaignsSPIDER is the full-scale prototype of the ion source of the ITER Heating Neutral Beam Injector, where negative ions of Hydrogen or Deuterium are produced by a RF generated plasma and accelerated with…Alberto Maistrello, Matteo Agostini, Marco Bigi et al.·Apr 5, 2023SaveLearn
Investigation of positive streamers in CO2: experiments and 3D particle-in-cell simulationsWe investigate the propagation of positive streamers in CO2 through 3D particle-in-cell simulations, which are qualitatively compared against experimental results at 50 mbar. The experiments show…Xiaoran Li, Siebe Dijcks, Anbang Sun et al.·Apr 4, 2023SaveLearn
MCTrans++: A 0-D Model for Centrifugal MirrorsThe centrifugal mirror confinement scheme incorporates supersonic rotation of a plasma into a magnetic mirror device. This concept has been shown experimentally to drastically decrease parallel…Nick R. Schwartz, Ian G. Abel, Adil B. Hassam et al.·Apr 4, 2023SaveLearn
Suppression of Bremsstrahlung losses from relativistic plasma with energy cutoffWe study the effects of redistributing superthermal electrons on Bremsstrahlung radiation from hot relativistic plasma. We consider thermal and nonthermal distribution of electrons with an energy…Vadim R. Munirov, Nathaniel J. Fisch·Apr 4, 2023SaveLearn
Functional Optimization for a Beam Driven Plasma Neutralizer in DEMO Neutral Beam InjectorThe Beam Driven Plasma Neutralizer (BDPN) has been proposed as a more efficient alternative to the gas neutralizer for negative-ion based Neutral Beam Injection (NNBI). In this paper we model the…Fabio Veronese, Piero Agostinetti, Christian Hopf et al.·Apr 4, 2023SaveLearn
Lessons learned after three years of SPIDER operation and the first MITICA integrated testsITER envisages the use of two heating neutral beam injectors plus an optional one as part of the auxiliary heating and current drive system. The 16.5 MW expected neutral beam power per injector is…D. Marcuzzi, V. Toigo, M. Boldrin et al.·Apr 4, 2023SaveLearn
Chaotic and integrable magnetic fields in one-dimensional hybrid Vlasov-Maxwell equilibriaIn this paper, we develop a one-dimensional (1-D), quasineutral, hybrid Vlasov-Maxwell equilibrium model with kinetic ions and massless fluid electrons and derive associated solutions. The model…Dimitrios A. Kaltsas, Philip J. Morrison, George N. Throumoulopoulos·Apr 3, 2023SaveLearn
Validation of GBS plasma turbulence simulation of the TJ-K stellaratorWe present a validation of a three-dimensional, two-fluid simulation of plasma turbulence in the TJ-K stellarator, a low temperature plasma experiment ideally suited for turbulence measurements. The…A. J. Coelho, J. Loizu, P. Ricci et al.·Apr 3, 2023SaveLearn
On a Super-Complete Mathematical Model of Ambipolar Processes of Cumulation and Dissipation in Self-Focusing Structures in Plasma of Planetary Atmospheres in plasma with current4D mathematical models of structurally related (conjugated, entangled, dual) phenomena of dissipation and cumulation of electrical energy (an external source in continuous media) are discussed,…Philipp I. Vysikaylo·Apr 2, 2023SaveLearn
A new indirect measurement method of the electron temperature for the Protosphera's pinch plasmaThis article presents a new method for estimating the electron temperature of the Protosphera's screw pinch. The temperature radial profile is obtained by a self-consistent modeling of a 1D MHD…D. Iannarelli, F. Napoli, F. Alladio et al.·Apr 2, 2023SaveLearn
Effects of the neutral dynamics model on the particle-in-cell simulations of a Hall thruster plasma dischargeThe dynamics of the neutral atoms in Hall thrusters affect several plasma processes, from the ionization to the electrons' mobility. In the context of Hall thruster's particle-in-cell (PIC)…Farbod Faraji, Maryam Reza, Aaron Knoll·Apr 2, 2023SaveLearn
Positron acceleration in plasma waves driven by non-neutral fireball beamsPlasma-based positron acceleration is still an open question, as the most efficient regimes for electron acceleration (quasi-linear and blowout) are not directly applicable to positrons.…Thales Silva, Jorge Vieira·Mar 31, 2023SaveLearn
Extending the Single-Fluid Solvability Conditions for More General Plasma SystemsWe extend the single-fluid solvability conditions to include plasma systems at arbitrary β with arbitrary flows and external forcing terms. This treatment includes both the isotropic and the…E. J. Kolmes, M. E. Mlodik, N. J. Fisch·Mar 31, 2023SaveLearn
Mechanisms and safety of air plasma inactivated SARS-CoV-2Cold atmospheric plasma (CAP) displays antimicrobial, antitumor, and antiviral properties, while the underlying mechanism is seldom clearly elucidated. In this work, we employed CAP with air-feeding…Guiqiang Wang, Dehua Kong, Wei Tang et al.·Mar 31, 2023SaveLearn
Dielectric Barrier Discharge Actuators: Experimental and Numerical Study of Momentum Injection into Co-flow and Counter-flow FreestreamDielectric barrier discharge (DBD) plasma actuators can generate a wall jet without moving parts by interacting with ionized and neutral molecules in an electric field. The coupling between…Anthony Tang, Nathan Li, Benjamin Price et al.·Mar 31, 2023SaveLearn
Conceptual design of the Gas Injection and Vacuum System for DTT NBIThe Divertor Tokamak Test (DTT) is a new experimental facility whose construction is starting in Frascati, Rome, Italy; its main goals are improving the understanding of plasma-wall interactions and…P. Agostinetti, S. Dal Bello, F. Dinh et al.·Mar 30, 2023SaveLearn
Light-Matter Interaction Near the Schwinger Limit Using Tightly Focused Doppler-Boosted LasersThe Schwinger limit could be approached by focusing to its diffraction limit the light reflected by a plasma mirror irradiated by a multi-petawatt laser. We explore numerically the interaction…Neïl Zaïm, Antonin Sainte-Marie, Luca Fedeli et al.·Mar 30, 2023SaveLearn
Effects of frequency-modulated pump on stimulated Brillouin scattering in inhomogeneous plasmasThe effects of a frequency-modulated pump on stimulated Brillouin scattering (SBS) in a flowing plasma are investigated by theoretical analysis, three-wave simulations, and kinetic simulations. The…Y. Chen, C. Y. Zheng, Z. J. Liu et al.·Mar 29, 2023SaveLearn
Ab initio calculated dynamic structure factor and optical properties of beryllium along the HugoniotBeryllium is an ablator material in the inertial-confinement fusion and hypervelocity impact studies. The thermoelastic properties, structure factors, and optical properties of beryllium are…Wei-Jie Li, Jie Zhou, Zi Li et al.·Mar 29, 2023SaveLearn
Observation of fast sound in two-dimensional dusty plasma liquidsEquilibrium molecular dynamics simulations are performed to study two-dimensional (2D) dusty plasma liquids. Based on the stochastic thermal motion of simulated particles, the longitudinal and…Zhenyu Ge, Dong Huang, Shaoyu Lu et al.·Mar 29, 2023SaveLearn