Attosecond dispersion as a diagnostics tool for solid-density laser-generated plasmasExtreme-ultraviolet pulses can propagate through ionised solid-density targets, unlike optical pulses and, thus, have the potential to probe the interior of such plasmas on sub-femtosecond…Andréas Sundström, István Pusztai, Per Eng-Johnsson et al.·Feb 1, 2022SaveLearn
Observation of the toroidal rotation in a new designed compact torus system for EASTCompact torus injection is considered as a high promising approach to realize central fueling in the future tokamak device. Recently, a compact torus injection system has been developed for the…Z. H. Zhao, T. Lan, D. F. Kong et al.·Feb 1, 2022SaveLearn
Charge kinetics across a negatively biased semiconducting plasma-solid interfaceAn investigation of the selfconsistent ambipolar charge kinetics across a negatively biased semiconducting plasma-solid interface is presented. For the specific case of a thin germanium layer with…K. Rasek, F. X. Bronold, H. Fehske·Feb 1, 2022SaveLearn
100-kT Magnetic field generation using paisley targets by femtosecond laser-plasma interactionsA target using a paisley pattern generates 100-kT-level magnetic fields. Laser irradiation induces local charge separation on the target, which creates surface currents along the concave surface,…Myles Allen Zosa, Yan-Jun Gu, Masakatsu Murakami·Feb 1, 2022SaveLearn
Linear and nonlinear analysis of Ion-Temperature-Gradient (ITG) Driven mode in the asymmetric Pair-Ion MagnetoplasmaWe have investigated linear and nonlinear dynamics of ion-temperature-gradient driven drift mode for Maxwellian and non Maxwellian pair-ion plasma embedded in an inhomogeneous magnetic field having…Javaria Razzaq, Zahida Ehsan, Arshad M. Mirza·Jan 31, 2022SaveLearn
Collective Effects and Intense Beam-Plasma Interactions in Ion-Beam-Driven High Energy Density Matter and Inertial Fusion EnergyFor the successful generation of ion-beam-driven high energy density matter and heavy ion fusion energy, intense ion beams must be transported and focused onto a target with small spot size. One of…Igor D. Kaganovich, Edward A. Startsev, Hong Qin et al.·Jan 31, 2022SaveLearn
Effective resistivity for magnetohydrodynamic simulation of collisionless magnetic reconnectionThe electron inertia term and the off-diagonal electron pressure terms are well-known for the frozen-in condition breakdown in collisionless magnetic reconnection, which are naturally kinetic and…H. W. Zhang, Z. W. Ma, T. Chen·Jan 30, 2022SaveLearn
A study of the requirements of p-11B fusion reactor by tokamak system codeMost tokamak devices including ITER exploit the D-T reaction due to its high reactivity, but the wall loading caused by the associated 14MeV neutrons will limit the further development of fusion…Jianqing Cai, Huasheng Xie, Yang Li et al.·Jan 30, 2022SaveLearn
Existence of an optimized stellarator with simple coilsAn optimized compact stellarator with four simple coils is obtained from direct optimization via coil shape. The new stellarator consists of two interlocking coils and two vertical field coils…Guodong Yu, Zhichen Feng, Peiyou jiang et al.·Jan 29, 2022SaveLearn
JOREK3D: An extension of the JOREK nonlinear MHD code to stellaratorsAlthough the basic concept of a stellarator was known since the early days of fusion research, advances in computational technology have enabled the modelling of increasingly complicated devices,…Nikita Nikulsin, Rohan Ramasamy, Matthias Hoelzl et al.·Jan 28, 2022SaveLearn
Efficient generation of new orbital angular momentum beams by backward and forward stimulated Raman scatteringLaser beams carrying orbital angular momentum (OAM) provide an additional degree of freedom and have found wide applications ranging from optical communications and optical manipulation to quantum…Q. S. Feng, R. Aboushelbaya, M. W. Mayr et al.·Jan 28, 2022SaveLearn
Vertical stabilization of tokamak plasmas via Extremum SeekingIn this paper we propose a vertical stabilization~(VS) control system for tokamak plasmas based on the extremum seeking (ES) algorithm. The gist of the proposed strategy is to inject an oscillating…Gianmaria De Tommasi, Luigi Emanuel di Grazia, Sara Dubbioso et al.·Jan 27, 2022SaveLearn
Generalized Fluid Models of the Braginskii TypeSeveral generalizations of the well-known fluid model of Braginskii (Rev. of Plasma Phys., 1965) are considered. We use the Landau collisional operator and the moment method of Grad. We focus on the…P. Hunana, T. Passot, E. Khomenko et al.·Jan 27, 2022SaveLearn
Acceleration of spin-polarized proton beams via two parallel laser pulsesWe present a setup for highly polarized proton beams using two parallel propagating laser pulses that have a carrier envelope phase difference of π. This mechanism is examined utilizing…Lars Reichwein, Markus Büscher, Alexander Pukhov·Jan 27, 2022SaveLearn
Unraveling the different regimes arisen during plasma ammonia synthesis on mesoporous silica SBA-15 through plasma diagnosticsHerein we demonstrate that the performance of mesoporous silica SBA-15 and SBA-15-Ag impregnated during plasma ammonia synthesis depend on the plasma conditions. At high power the mesoporous silica…Sophia Gershman, Henry Fetsch, Fnu Gorky et al.·Jan 27, 2022SaveLearn
Fluid and hybrid simulations of the ionization instabilities in Hall thrusterLow-frequency axial oscillations (5-50 kHz) stand out as a pervasive feature observed in many types of Hall thrusters. While it is widely recognized that the ionization effects play the central role…Oleksandr Chapurin, Andrei Smolyakov, Gerjan Hagelaar et al.·Jan 27, 2022SaveLearn
A computational study of steady and stagnating positive streamers in N2-O2 mixturesIn this paper, we address two main topics: steady propagation fields for positive streamers in air and streamer deceleration in fields below the steady propagation field. We generate…Xiaoran Li, Baohong Guo, Anbang Sun et al.·Jan 27, 2022SaveLearn
The criterion for infinite positron feedback in dynamics of relativistic runaway electron avalanchesRelativistic runaway electron avalanches (RREA) accelerated by thunderstorm large-scale electric fields are one of the sources of atmospheric gamma radiation. In strong electric fields, RREAs can…E. Stadnichuk, E. Svechnikova·Jan 26, 2022SaveLearn
Bohm criterion of plasma sheaths away from asymptotic limitThe plasma exit flow speed at the sheath entrance is constrained by the Bohm criterion. The so-called Bohm speed regulates the plasma particle and power exhaust fluxes to the wall, and it is commonly…Yuzhi Li, Bhuvana Srinivasan, Yanzeng Zhang et al.·Jan 26, 2022SaveLearn
Non-linear interaction of laser light with vacuum: contributions to the energy density and pressure in presence of an intense magnetic fieldRecent simulations show that very large electric and magnetic fields near the kilo Tesla strength will likely be generated by ultra-intense lasers at existing facilities over distances of hundreds of…M. Ángeles Pérez-García, A. Pérez Martínez, E. Rodríguez Querts·Jan 26, 2022SaveLearn
Global fluid simulation of plasma turbulence in a stellarator with an island divertorResults of a three-dimensional, flux-driven, electrostatic, global, two-fluid turbulence simulation for a 5-field period stellarator with an island divertor are presented. The numerical simulation is…A. J. Coelho, J. Loizu, P. Ricci et al.·Jan 26, 2022SaveLearn
One dimensional reduced model for ITER relevant energetic particle transportWe set up a mapping procedure able to translate the evolution of the radial profile of fast ions, interacting with Toroidal Alfvén Eigenmodes, into the dynamics of an equivalent one dimensional…Nakia Carlevaro, Guo Meng, Giovanni Montani et al.·Jan 26, 2022SaveLearn
An in-depth numerical study of exact laws for compressible Hall magnetohydrodynamic turbulenceVarious exact laws governing compressible magnetohydrodynamic (MHD) and Hall-MHD (CHMHD) turbulence have been derived in recent years. Other than their fundamental theoretical interest, these laws…R. Ferrand, F. Sahraoui, S. Galtier et al.·Jan 26, 2022SaveLearn
Effect of Two-Stage Shattered Pellet Injection on Tokamak DisruptionsAn effective disruption mitigation system in a tokamak reactor should limit the exposure of the wall to localized heat losses and to the impact of high current runaway electron beams, and avoid…O. Vallhagen, I. Pusztai, M. Hoppe et al.·Jan 25, 2022SaveLearn
Spatiotemporal evolution of emission and absorption signatures in a laser-produced plasmaWe report spatiotemporal evolution of emission and absorption signatures of Al species in a nanosecond (ns) laser-produced plasma (LPP). The plasmas were generated from an Inconel target, which…Sivanandan S. Harilal, Elizabeth J. Kautz, Mark C. Phillips·Jan 25, 2022SaveLearn