Stellarator coil optimization supporting multiple magnetic configurationsWe present a technique that can be used to design stellarators with a high degree of experimental flexibility. For our purposes, flexibility is defined by the range of values the rotational transform…Brandon F Lee, Elizabeth J Paul, Georg Stadler et al.·Aug 1, 2022SaveLearn
Subion Scale Turbulence Driven by Magnetic ReconnectionThe interplay between plasma turbulence and magnetic reconnection remains an unsettled question in astrophysical and laboratory plasmas. Here we report the first observational evidence that magnetic…Davide Manzini, Fouad Sahraoui, Francesco Califano·Aug 1, 2022SaveLearn
Non-thermal evolution of dense plasmas driven by intense x-ray fieldsThe advent of x-ray free-electron lasers (XFELs) has enabled a range of new experimental investigations into the properties of matter driven to extreme conditions via intense x-ray-matter…Shenyuan Ren, Yuanfeng Shi, Quincy Y. van den Berg et al.·Aug 1, 2022SaveLearn
Target density effects on charge tansfer of laser-accelerated carbon ions in dense plasmaWe report on charge state measurements of laser-accelerated carbon ions in the energy range of several MeV penetrating a dense partially ionized plasma. The plasma was generated by irradiation of a…Jieru Ren, Bubo Ma, Lirong Liu et al.·Aug 1, 2022SaveLearn
A Novel Approach on Dielectric Barrier Discharge using Printed Circuit BoardsDrug resistant bacteria, prions and nosocomial infections underline the need of more effective sterilizing technologies. The cold plasma technology is expected to bring a benefit in this context. Six…Jonathan Gail, Alisa Schmidt, Markus H. Thoma·Aug 1, 2022SaveLearn
High-order corrections to the radiation-free dynamics of an electron in the strongly radiation-dominated regimeA system of reduced equations is proposed for the electron motion in the strongly-radiation dominated regime for an arbitrary electromagnetic field configuration. The developed approach is used to…A. S. Samsonov, E. N. Nerush, I. Yu. Kostyukov·Aug 1, 2022SaveLearn
Electron heating in a current-driven turbulence as a result of nonlinear interaction of electron- and ion-acoustic wavesWe study electron heating in collisionless current-driven turbulence due to the nonlinear interactions between electron- and ion-acoustic waves. PIC simulation results show that due to a large…Jian Chen, Alexander V. Khrabrov, Igor D. Kaganovich et al.·Aug 1, 2022SaveLearn
Scaling of electron heating by magnetization during reconnection and applications to dipolarization fronts and super-hot solar flaresElectron ring velocity space distributions have previously been seen in numerical simulations of magnetic reconnection exhausts and have been suggested to be caused by the magnetization of the…M. Hasan Barbhuiya, Paul. A. Cassak, Michael. A. Shay et al.·Aug 1, 2022SaveLearn
On the excitation of Ion Acoustic Soliton in quiescent plasma confined by multi-pole line cusp magnetic fieldThis paper presents the detailed study of the controlled experimental observation and characterization of Ion Acoustic soliton in the quiescent argon plasma produced by filamentary discharge and…Zubin Shaikh, A. D. Patel, Meenakshee Sharma et al.·Jul 30, 2022SaveLearn
Developing Deep Learning Algorithms for Inferring Upstream Separatrix Density at JETPredictive and real-time inference capability for the upstream separatrix electron density, ne, sep, is essential for design and control of core-edge integrated plasma scenarios. In this…A. Kit, A. Jaervinen, S. Wiesen et al.·Jul 30, 2022SaveLearn
Mitigation of the onset of hosing in the linear regime through plasma frequency detuningThe hosing instability poses a feasibility risk for plasma-based accelerator concepts. We show that the growth rate for beam hosing in the linear regime (which is relevant for concepts that use a…Mariana Moreira, Patric Muggli, Jorge Vieira·Jul 29, 2022SaveLearn
Ab initio path integral Monte Carlo simulations of hydrogen snapshots at warm dense matter conditionsWe combine ab initio path integral Monte Carlo (PIMC) simulations with fixed ion configurations from density functional theory molecular dynamics (DFT-MD) simulations to solve the electronic problem…Maximilian Böhme, Zhandos A. Moldabekov, Jan Vorberger et al.·Jul 29, 2022SaveLearn
Tail-wave-assisted Positron Acceleration in Nonlinear Laser Plasma WakefieldsRelativistic laser wakefield acceleration is characterized by an unsurpassed accelerating gradient, which is very suitable for electron acceleration over short distances and could be a promising…Wei-Yuan Liu, Xing-Long Zhu, Min Chen et al.·Jul 29, 2022SaveLearn
Scaling of reconnection parameters in magnetic island coalescence: Role of in-plane shear flowA 2D incompressible viscoresistive-MHD model [Mahapatra et. al., Phys. Plasmas 28, 072103 (2021)] is used to study the scaling of reconnection parameters in magnetic island coalescence problem under…Jagannath Mahapatra, Rajaraman Ganesh, Abhijit Sen·Jul 28, 2022SaveLearn
Detailed investigation on x-ray emission from laser driven high-Z foils in a wide intensity range : role of conversion layer and reemission zoneDetailed radiation hydrodynamic simulations are carried out to investigate x-ray emission process in four high-Z planar targets namely, tungsten (W), gold (Au), lead (Pb) and uranium (U) irradiated…Gaurav Mishra, Karabi Ghosh·Jul 28, 2022SaveLearn
Energizing charged particles by an orbit instability in a slowly rotating magnetic fieldThe stability of charged particle motion in a uniform magnetic field with an added spatially uniform transverse rotating magnetic field (RMF) is studied analytically. It is found that the stability…E. Palmerduca, H. Qin, S. A. Cohen·Jul 27, 2022SaveLearn
Partial-Ionization Deconfinement Effect in Magnetized PlasmaIn partially ionized plasma, where ions can be in different ionization states, each charge state can be described as a different fluid for the purpose of multi-ion collisional transport. In the case…M. E. Mlodik, E. J. Kolmes, I. E. Ochs et al.·Jul 27, 2022SaveLearn
Improved Heat and Particle Flux Mitigation in High Core Confinement, Baffled, Alternate Divertor Configurations in the TCV tokamakNitrogen seeded detachment has been achieved in the Tokamak a Configuration Variable (TCV) in advanced divertor configurations (ADCs), namely X-divertor and X-point target, with and without baffles…Harshita Raj, C. Theiler, A. Thornton et al.·Jul 27, 2022SaveLearn
High-power laser experiment on developing supercritical shock propagating in homogeneously magnetized plasma of ambient gas originA developing supercritical collisionless shock propagating in a homogeneously magnetized plasma of ambient gas origin having higher uniformity than the previous experiments is formed by using…S. Matsukiyo, R. Yamazaki, T. Morita et al.·Jul 26, 2022SaveLearn
Runaway electron deconfinement in SPARC and DIII-D by a passive 3D coilThe operation of a 3D coil--passively driven by the current quench loop voltage--for the deconfinement of runaway electrons is modeled for disruption scenarios in the SPARC and DIII-D tokamaks.…V. A. Izzo, I. Pusztai, K. Särkimäki et al.·Jul 25, 2022SaveLearn
Femtosecond laser-induced sub-wavelength plasma inside dielectrics: II. Second-harmonic generationSecond-harmonic emission at a frequency that is twice the laser frequency is an important diagnostic for nonlinear laser-plasma interaction. It is forbidden for centrosymmetric materials such as the…Kazem Ardaneh, Mostafa Hassan, Benoit Morel et al.·Jul 24, 2022SaveLearn
A "Galactic Disk"-Model for Three-Dimensional Bernstein-Greene-Kruskal Modes in a Finite Magnetic FieldA new model, inspired by the structure of galactic disks, for three-dimensional Bernstein-Greene-Kruskal (BGK) modes in a plasma with a uniform finite background magnetic field is presented. These…C. S. Ng·Jul 24, 2022SaveLearn
High-charge 10 GeV electron acceleration in a 10 cm nanoparticle-assisted hybrid wakefield acceleratorIn an electron wakefield accelerator, an intense laser pulse or charged particle beam excites plasma waves. Under proper conditions, electrons from the background plasma are trapped in the plasma…Constantin Aniculaesei, Thanh Ha, Samuel Yoffe et al.·Jul 23, 2022SaveLearn
Ion-driven destabilization of a toroidal electron plasma -- A 3D3VPIC SimulationIon resonance instability of toroidal electron plasmas in a tight aspect ratio axisymmetric toroidal device is reported for Ar+ ions of different initial density values using a high fidelity…Swapnali Khamaru, Rajaraman Ganesh, Meghraj Sengupta·Jul 23, 2022SaveLearn
Strong Coulomb Coupling Influences Ion and Neutral Temperatures in Atmospheric Pressure PlasmasMolecular dynamics simulations are used to model ion and neutral temperature evolution in partially-ionized atmospheric pressure plasma at different ionization fractions. Results show that ion-ion…M. D. Acciarri, C. Moore, S. D. Baalrud·Jul 22, 2022SaveLearn