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The ambipolar electrostatic potential rising along the magnetic field line from the grounded wall to the centre in the linear gas dynamic trap, rules the available suppression of axial heat and particle losses. In this paper, the visible…

Plasma Physics · Physics 2021-07-07 A. Lizunov

Jets serve as an important tool to probe QCD both in the vacuum and in the hot and dense medium. The STAR experiment at RHIC plays a key role in studying QCD phenomena across different collision systems ($p$+$p$, $p$+A, A+A), offering…

High Energy Physics - Experiment · Physics 2025-08-01 Michal Svoboda

A multi-chord fiber-coupled interferometer [Merritt et al., Rev. Sci. Instrum. 83, 033506 (2012)] is being used to make time-resolved density measurements of supersonic argon plasma jets on the Plasma Liner Experiment [Hsu et al., Bull.…

A part analytical, part numerical ideal MHD analysis of low-frequency Alfven wave physics in the H-1 stellarator is given. The three-dimensional, compressible ideal spectrum for H-1 is presented and it is found that despite the low beta…

Plasma Physics · Physics 2015-06-04 Jason Bertram , Boyd Blackwell , Matthew Hole

To expand on recent work, we introduce collisional terms in the analysis of the warm ion-electron, two-fluid equations for a homogeneous plasma at rest. Consequently, the plasma is now described by six variables: the magnetisation, the…

Plasma Physics · Physics 2024-05-21 Joeri De Vadder , Jordi De Jonghe , Rony Keppens

ITER's large and powerful neutral beam injection system is based on an ion source utilizing a modular concept, where eight cylindrical drivers are attached to one common expansion and extraction region. In each driver, a plasma is sustained…

Plasma Physics · Physics 2022-11-21 Dominikus Zielke , Stefan Briefi , Ursel Fantz

Energy detection (ED) is an attractive technique for symbol detection at receivers equipped with a large number of antennas, for example in millimeter wave communication systems. This paper investigates the performance bounds of ED with…

Information Theory · Computer Science 2016-12-01 Lishuai Jing , Zoran Utkovski , Elisabeth de Carvalho , Petar Popovski

This paper presents an innovative approach to mitigating the peak-to-average power ratio (PAPR). The proposed method uses a deep learning model called autoencoders (AEs) to simplify the process and avoid the complex calculations of…

Signal Processing · Electrical Eng. & Systems 2025-03-03 Omar Alnaseri , Ibtesam R. K. Al-Saedi , Yassine Himeur , Hongxiang Li

The young active star AB Dor (K1 IV-V) has been observed 16 times in the last three years with the XMM-Newton and Chandra observatories, totalling 650 ks of high-resolution X-ray spectra. The XMM/RGS observations with the highest and lowest…

Astrophysics · Physics 2009-11-10 J. Sanz-Forcada , A. Maggio , G. Micela

In the event of a tokamak disruption in a D-T plasma, fusion-born alpha particles take several milliseconds longer to thermalise than the background. As the damping rates drop drastically following the several orders of magnitudes drop of…

Plasma Physics · Physics 2023-04-19 Andrej Lier , Gergely Papp , Philipp Lauber , Istvan Pusztai , Konsta Särkimäki , Ola Embreus

We study the evolution of collisionless plasmas that, due to their macroscopic evolution, are susceptible to the firehose instability, using both analytic theory and hybrid-kinetic particle-in-cell simulations. We establish that, depending…

High Energy Astrophysical Phenomena · Physics 2025-07-15 A. F. A. Bott , M. W. Kunz , E. Quataert , J. Squire , L Arzamasskiy

Context: Compensated-current systems are established in response to hot ion beams in terrestrial foreshock regions, around supernova remnants, and in other space and astrophysical plasmas. Aims: We study a non-resonant reactive instability…

Space Physics · Physics 2018-08-08 Pavlo Malovichko , Yuriy Voitenko , Johan De Keyser

Parametric excitation in coupled mechanical systems has enabled advances in sensing, computation, and phonon control. The function of distinct phase modes using parametric driving remains insufficiently explored. Here, we investigate the…

Mesoscale and Nanoscale Physics · Physics 2025-10-31 Vishnu Kumar , Nishta Arora , Bhargavi B. A. , Akshay Naik , Saurabh A. Chandorkar

The nonlinear saturation of toroidal Alfven eigenmode (TAE) due to thermal plasma nonlinearities is investigated using gyrokinetic particle-in-cell simulations and theoretical analysis. In the single toroidal mode number simulations with…

The term "Active Plasma Resonance Spectroscopy" refers to a class of diagnostic methods which employ the ability of plasmas to resonate on or near the plasma frequency. The basic idea dates back to the early days of discharge physics: An…

Plasma Physics · Physics 2015-06-12 Martin Lapke , Jens Oberrath , Thomas Mussenbrock , Ralf Peter Brinkmann

Information technology demands high-speed optoelectronic devices, but going beyond the one terahertz (THz) barrier is challenging due to the difficulties associated with generating, detecting, and processing high-frequency signals. Here, we…

Mesoscale and Nanoscale Physics · Physics 2021-11-29 Ziqi Li , Bo Peng , Miao-Ling Lin , Yu-Chen Leng , Bin Zhang , Chi Pang , Ping-Heng Tan , Bartomeu Monserrat , Feng Chen

In latent diffusion models, the autoencoder (AE) is typically expected to balance two capabilities: faithful reconstruction and a generation-friendly latent space (e.g., low gFID). In recent ImageNet-scale AE studies, we observe a…

Computer Vision and Pattern Recognition · Computer Science 2026-01-30 Pu Cao , Yiyang Ma , Feng Zhou , Xuedan Yin , Qing Song , Lu Yang

Phase Resolved Optical Emission Spectroscopy (PROES) measurements combined with 1d3v Particle-in-Cell/Monte Carlo Collision (PIC/MCC) simulations are performed to investigate the excitation dynamics in low-pressure capacitively coupled…

Plasma Physics · Physics 2023-07-21 Aranka Derzsi , Mate Vass , Ranna Masheyeva , Benedek Horvath , Zoltan Donko , Peter Hartmann

The azimuthal correlation angle, $\Delta\phi$, between the scattered lepton and the leading jet in deep inelastic $e^{\pm}p$ scattering at HERA has been studied using data collected with the ZEUS detector at a centre-of-mass energy of…

The term "Active Plasma Resonance Spectroscopy" (APRS) denotes a class of related techniques which utilize, for diagnostic purposes, the natural ability of plasmas to resonate on or near the electron plasma frequency $\omega_{\rm pe}$: A…

Plasma Physics · Physics 2015-06-16 Jens Oberrath , Ralf Peter Brinkmann