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Plasma Physics papers — page 164

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Investigating Mechanisms of State Localization in Highly-Ionized Dense Plasmas
We present the first experimental observation of Kβ emission from highly charged Mg ions at solid density, driven by intense x-rays from a free electron laser. The presence of Kβ emission…
Thomas Gawne, Thomas Campbell, Alessandro Forte et al.Feb 8, 2023
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Focusing of a Long Relativistic Proton Bunch in Underdense Plasma
We discuss the focusing effect experienced by a long relativistic proton bunch, when propagating in underdense plasma. We show with 2D quasi-static simulations that the response of the plasma to the…
Livio Verra, Edda Gschwendtner, Patric MuggliFeb 8, 2023
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MHD stability and the effects of shaping: a near-axis view for tokamaks and quasisymmetric stellarators
How much does the cross-section of a toroidal magnetic field configuration tell us about its MHD stability? It is generally believed that positive triangularity (typically leading to bean-shaped…
Eduardo RodriguezFeb 7, 2023
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Investigation of the collisionless plasmoid instability based on gyrofluid and gyrokinetic integrated approach
In this work, the development of two-dimensional current sheets with respect to tearing-modes, in collisionless plasmas with a strong guide field, is analysed. During their non-linear evolution,…
C. Granier, R. Numata, D. Borgogno et al.Feb 6, 2023
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Transport Barrier and Spinning Blob Dynamics in the Tokamak Edge
In this work, we investigate the dynamics of plasma blobs in the edge of magnetic confinement devices using a full-f gyrokinetic particle-in-cell code with X-point geometry. In simulations, the…
Junyi Cheng, James Myra, Seung-Hoe Ku et al.Feb 6, 2023
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Probing the dynamics of solid density micro-wire targets after ultra-intense laser irradiation using a free-electron laser
In this paper, we present an experiment that explores the plasma dynamics of a 7 micron diameter carbon wire after being irradiated with a near-relativistic-intensity short pulse laser. Using an…
Thomas Kluge, Michael Bussmann, Eric Galtier et al.Feb 6, 2023
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A novel Doppler backscattering (DBS) system to simultaneously monitor radio frequency plasma fluctuations and low frequency turbulence
A novel quadrature Doppler Backscattering (DBS) system has been developed and optimized for the E-band (60-90GHz) frequency range using either O-mode or X-mode polarization in DIII-D plasmas. In…
S. Chowdhury, N. A. Crocker, W. A. Peebles et al.Feb 6, 2023
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Flux and energy asymmetry in a low pressure capacitively coupled plasma discharge excited by sawtooth-like waveform -- a harmonic study
Control over plasma asymmetry in a low-pressure capacitively coupled plasma (CCP) discharges is vital for many plasma processing applications. In this article, using the particle-in-cell simulation…
Sarveshwar Sharma, Nishant Sirse, Miles M TurnerFeb 5, 2023
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Plasma Agriculture: A green technology to attain the sustainable agriculture goal
The agriculture sector has many issues such as reductions of agricultural lands, growing population, health issues arising due to the use of synthetic fertilizers and pesticides, reduction in soil…
Tanvira Malek, Mangilal ChoudharyFeb 5, 2023
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ALLIANCE: Spectral solver for kinetic plasma turbulence
The ALLIANCE code is developed to solve a new set of four-dimensional electromagnetic drift-kinetic equations in slab geometry [J. Plasma Phys. 88 905880117 (2022)]. The nonlinear equations are…
Evgeny A. Gorbunov, Bogdan TeacaFeb 3, 2023
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Explicit energy-conserving modification of relativistic PIC method
The use of explicit particle-in-cell (PIC) method for relativistic plasma simulations is restricted by numerical heating and instabilities that may significantly constrain the choice of time and…
Arkady GonoskovFeb 3, 2023
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Comments to "High current ionic flows via ultra-fast lasers for fusion applications" by H. Ruhl and G. Korn (Marvel Fusion, Munich)
We comment on Marvel Fusion's proposal to use ultra-short, intensive laser pulses impinging on nanostructured targets for the production of hot ions, with the ultimate aim of energy production…
Karl Lackner, Sina Fietz, Alexander v. MüllerFeb 3, 2023
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Signatures for strong-field QED in the quantum limit of beamstrahlung
Signatures of strong-field quantum electrodynamics are determined for collisions between round ultrarelativistic leptonic beams in the quantum limit of beamstrahlung. In the low disruption regime, we…
W. L. Zhang, T. Grismayer, L. O. SilvaFeb 2, 2023
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Bayesian optimization of massive material injection for disruption mitigation in tokamaks
A Bayesian optimization framework is used to investigate scenarios for disruptions mitigated with combined deuterium and neon injection in ITER. The optimization cost function takes into account…
Istvan Pusztai, Ida Ekmark, Hannes Bergström et al.Feb 2, 2023
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Faithful guiding-center orbits in an axisymmetric magnetic field
The problem of the charged-particle motion in an axisymmetric magnetic geometry is used to assess the validity of higher-order Hamiltonian guiding-center theory, which includes higher-order…
Alain J. Brizard, Brook C. HodgemanFeb 2, 2023
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Decay law of magnetic turbulence with helicity balanced by chiral fermions
In plasmas composed of massless electrically charged fermions, chirality can be interchanged with magnetic helicity while preserving the total chirality through the quantum chiral anomaly. The decay…
Axel Brandenburg, Kohei Kamada, Jennifer SchoberFeb 1, 2023
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The equation of state of a partly homogenized plasma of low-dense porous matter
The equation of state (EOS) of a low-density porous substance plasma is proposed in the form of continuous media EOS containing, as a pressure control parameter, the degree of plasma homogenization,…
S. Yu. Guskov, R. A. YakhinFeb 1, 2023
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Strong collisionless coupling between an unmagnetized driver plasma and a magnetized background plasma
Fast-exploding plasmas traveling though magnetized, collisionless plasmas can occur in a variety of physical systems, such as supernova remnants, coronal mass ejections, and laser-driven laboratory…
Filipe D. Cruz, Derek. B. Schaeffer, Fábio Cruz et al.Feb 1, 2023
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Investigation of alumina formed by plasma electrolytic saturation
The process of alumina coating on the steel surface plasma electrolytic method is a method for increasing the corrosion resistance, in this process, electrolytic aluminum containing compounds should…
Seyad Mohammad Mousavi Khoie, Mohammad Falaki, Babak GhorbanianJan 31, 2023
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Qubit Lattice Algorithm Simulations of Maxwell's Equations for Scattering from Anisotropic Dielectric Objects
A Dyson map explicitly determines the appropriate basis of electromagnetic fields which yields a unitary representation of the Maxwell equations in an inhomogeneous medium. A qubit lattice algorithm…
George Vahala, Min Soe, Linda Vahala et al.Jan 31, 2023
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Drift of ablated material after pellet injection in a tokamak
Pellet injection is used for fuelling and controlling discharges in tokamaks, and it is foreseen in ITER. During pellet injection, a movement of the ablated material towards the low-field side (or…
O. Vallhagen, I. Pusztai, P. Helander et al.Jan 30, 2023
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Application of Coherent Microwave Scattering and Multiphoton Ionization for Diagnostics of Electric Propulsion Systems
Nonintrusive measurements of plasma properties are essential to evaluate, and numerically simulate, the in-flight performance of electric propulsion systems. As a logical first step in the…
Adam R. Patel, Sashin L. B. Karunarathne, Nicholas Babusis et al.Jan 30, 2023
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On the intensity of focused waves near turning points
A wave near an isolated turning point is typically assumed to have an Airy function profile with respect to the separation distance. This description is incomplete, however, and is insufficient to…
N. A. Lopez, E. Kur, D. J. StrozziJan 30, 2023
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Source of pure proton beams
In the quasi-gasdynamic high-current ion source described in this work, the plasma is sustained by high-power millimeter-wave radiation under the electron cyclotron resonance (ECR) condition. In such…
S. V. Golubev, I. V. Izotov, V. A. Skalyga et al.Jan 28, 2023
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A Living Review of Quantum Computing for Plasma Physics
Quantum Computing promises accelerated simulation of certain classes of problems, in particular in plasma physics. Given the nascent interest in applying quantum computing techniques to study plasma…
Óscar Amaro, Diogo CruzJan 27, 2023
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