Benchmarking between fluid and global models for low-pressure oxygen DC glow dischargesThis work focuses on the benchmarking between a zero-dimensional (0D) global model (LoKI) and a one-dimensional (1D) radial fluid model for the positive column of oxygen DC glow discharges in a tube…Pedro Viegas, Tiago Cunha Dias, Chloé Fromentin et al.·Oct 29, 2022SaveLearn
Plasma emission induced by ring-distributed energetic electrons in overdense plasmasAccording to the standard scenario of plasma emission, escaping radiations are generated by the nonlinear development of the kinetic bump-on-tail instability driven by a single beam of energetic…Yao Chen, Zilong Zhang, Sulan Ni et al.·Oct 29, 2022SaveLearn
Reduction of electrostatic turbulence in a quasi-helically symmetric stellarator via critical gradient optimizationWe present a stellarator configuration optimized for a large threshold (``critical gradient'') for the onset of the ion temperature gradient (ITG) driven mode, which achieves the largest…G. T. Roberg-Clark, P. Xanthopoulos, G. G. Plunk·Oct 28, 2022SaveLearn
Self-similar collapse in a circular magnetic field and electron beam jets by hybrid transverse plasmonBased on the set of nonlinear coupling equations describing the interaction of the high-frequency field, the self-generated magnetic field and the ion-acoustic field, the dispersion relation for the…X. L. Liu, X. Q. Li·Oct 28, 2022SaveLearn
The shear Alfvén continuum with a magnetic island chain in tokamak plasmasThe shear Alfvén continuum spectrum is studied for a tokamak with a single island chain using the ideal Magnetohydrodynamics (MHD) theory. We have taken into account the toroidal geometry and…Zhisong Qu, Matthew Hole·Oct 27, 2022SaveLearn
Loading a relativistic kappa distribution in particle simulationsA procedure for loading particle velocities from a relativistic kappa distribution in particle-in-cell (PIC) and Monte Carlo simulations is presented. It is based on the rejection method and the beta…Seiji Zenitani, Shin'ya Nakano·Oct 27, 2022SaveLearn
On the control of electron heating for optimal laser radiation pressure ion accelerationWe study the onset of electron heating in intense laser-solid interactions and its impact on the spectral quality of radiation pressure accelerated ions in both hole boring and light sail regimes.…H. -G. Jason Chou, Anna Grassi, Siegfried H. Glenzer et al.·Oct 26, 2022SaveLearn
Intense multicycle THz pulses generated by laser-produced nanoplasmasWe present a novel scheme to obtain robust, narrowband, and tunable THz emission by using a nano-dimensional overdense plasma target that is irradiated by two counter-propagating detuned laser…Manoj Kumar, Hyung Seon Song, Jaeho Lee et al.·Oct 26, 2022SaveLearn
A fast, accurate, and easy to implement Kapur-Rokhlin quadrature scheme for singular integrals in axisymmetric geometriesMany applications in magnetic confinement fusion require the efficient calculation of surface integrals with singular integrands. The singularity subtraction approaches typically used to handle such…E. Toler, A. J. Cerfon, D. Malhotra·Oct 25, 2022SaveLearn
Plasma sheath studies using a physical treatment of electron emission from a dielectric wallWhen a plasma sheath forms next to a dielectric wall, material properties determine electron absorption and reflection from the surface, impacting the sheath formation and structure. The low energy…Kolter Bradshaw, Petr Cagas, Ammar Hakim et al.·Oct 25, 2022SaveLearn
Microscopic structure of electromagnetic whistler wave damping by kinetic mechanisms in hot magnetized Vlasov plasmasThe kinetic damping mechanism of low frequency transverse perturbations propagating parallel to the magnetic field in a magnetized warm electron plasma is simulated by means of electromagnetic (EM)…Anjan Paul, Devendra Sharma·Oct 25, 2022SaveLearn
Ion kinetic effects and instabilities in the plasma flow in the magnetic mirrorKinetic effects in plasma flow due to a finite ion temperature and ion reflections in a converging-diverging magnetic nozzle are investigated with collisionless quasineutral hybrid simulations with…Marilyn Jimenez, Andrei Smolyakov, Oleksandr Chapurin et al.·Oct 24, 2022SaveLearn
Exploring ultra-high-intensity wakefields in carbon nanotube arrays: an effective plasma-density approachCharged particle acceleration using solid-state nanostructures has attracted attention in recent years as a method of achieving ultra-high-gradient acceleration in the TV/m domain. More concretely,…A. Bonatto, G. Xia, O. Apsimon et al.·Oct 23, 2022SaveLearn
Neutron Emission Spectrometer To Measure Ion Temperature On The Fusion Demonstration PlantGeneral Fusion is building the Fusion Demonstration Plant to demonstrate a magnetized target fusion scheme in which a deuterium plasma is heated from 200 eV to 10 keV by piston-driven compression of…P. J. F. Carle, F. Retière, A. Sher et al.·Oct 23, 2022SaveLearn
Eulerian simulations of electrostatic waves in plasmas with a single sign of chargeAn Eulerian, numerical simulation is used to model the launching of plasma waves in a non-neutral plasma that is confined in a Penning-Malmberg trap. The waves are launched by applying an oscillating…S. Cristofaro, O. Pezzi, T. M. O'Neil et al.·Oct 21, 2022SaveLearn
Predictions of improved confinement in SPARC via energetic particle turbulence stabilizationThe recent progress in high-temperature superconductor technologies has led to the design and construction of SPARC, a compact tokamak device expected to reach plasma breakeven with up to 25MW of…A. Di Siena, P. Rodriguez-Fernandez, N. T. Howard et al.·Oct 21, 2022SaveLearn
Ion-acoustic feature of collective Thomson scattering in non-equilibrium two-stream plasmasWe theoretically and numerically investigate the ion-acoustic features of collective Thomson scattering (CTS) in two-stream plasmas. When the electron distribution functions of two (stationary and…K. Sakai, T. Nishimoto, S. Isayama et al.·Oct 20, 2022SaveLearn
Spectral analysis of multidimensional current-driven plasma instabilities and turbulence in hollow cathode plumesLarge-amplitude current-driven instabilities in hollow cathode plumes can generate energetic ions responsible for cathode sputtering and spacecraft degradation. A 2D2V (two dimensions each in…Wai Hong Ronald Chan, Ken Hara, Jonathan M. Wang et al.·Oct 20, 2022SaveLearn
Collective Thomson scattering in non-equilibrium laser produced two-stream plasmasWe investigate collective Thomson scattering (CTS) in two-stream non-equilibrium plasmas analytically, numerically and experimentally. In laboratory astrophysics, CTS is a unique tool to obtain local…K. Sakai, S. Isayama, N. Bolouki et al.·Oct 20, 2022SaveLearn
Nonthermal Atmospheric Plasma Reactors for Hydrogen Production from Low-Density PolyethyleneHydrogen is largely produced via natural gas reforming or electrochemical water-splitting, leaving organic solid feedstocks under-utilized. Plasma technology powered by renewable electricity can lead…Benard Tabu, Kevin Akers, Peng Yu et al.·Oct 20, 2022SaveLearn
Numerical study of the Transverse Diffusion coefficient for a one component model of plasmaIn this paper we discuss the results of some Molecular Dynamics simulations of a magnetized One Component Plasma, targeted to estimate the diffusion coefficient D in the plane orthogonal to…Lorenzo Valvo, Andrea Carati·Oct 20, 2022SaveLearn
The constraint of plasma power balance on runaway avoidanceIn a post-thermal-quench plasma, mitigated or unmitigated, the plasma power balance is mostly between collisional or Ohmic heating and plasma radiative cooling. In a plasma of atomic mixture…Christopher J. McDevitt, Xian-Zhu Tang, Christopher J. Fontes et al.·Oct 19, 2022SaveLearn
Influence of the shape of a conducting chamber on the stability of rigid ballooning modes in a mirror trapThe MHD stabilization of ``rigid'' flute and ballooning modes with azimuthal number m = 1 in an axisymmetric mirror trap by means of a perfectly conducting lateral wall is studied both in…Igor Kotelnikov·Oct 19, 2022SaveLearn
The phase unwrapping of under-sampled interferograms using radial basis function neural networksInterferometry can measure the shape or the material density of a system that could not be measured otherwise by recording the difference between the phase change of a signal and a reference phase.…Pierre-Alexandre Gourdain, Aidan Bachmann·Oct 19, 2022SaveLearn
Stochastic modelling of blob-like plasma filaments in the scrape-off layer: Theoretical foundationA stochastic model is presented for a super-position of uncorrelated pulses with a random distribution of amplitudes, sizes, velocities and arrival times. The pulses are assumed to move radially with…J. M. Losada, A. Theodorsen, O. E. Garcia·Oct 18, 2022SaveLearn