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We aim to investigate the spatial location of the source of an active region (AR) jet and its relation with associated nonthermal type~III radio emission. An emission measure (EM) method was used to study the thermodynamic nature of the AR…

Solar and Stellar Astrophysics · Physics 2020-10-01 Sargam M. Mulay , Rohit Sharma , Gherardo Valori , Alberto M. Vásquez , Giulio Del Zanna , Helen Mason , Divya Oberoi

In this paper, we study the weakly-compressive high-frequency plasma waves which are superposed on a large-amplitude Alfv\'en wave in a multi-fluid plasma consisting of protons, electrons, and alpha particles. For these waves, the plasma…

Plasma Physics · Physics 2012-01-16 Daniel Verscharen , Eckart Marsch

STEP is a spherical tokamak prototype power plant that is being designed to demonstrate net electric power. The design phase involves the exploitation of plasma models to optimise fusion performance subject to satisfying various physics and…

Three-dimensional (3D) simulations of electron beams propagating in high energy density (HED) plasmas using the quasi-static Particle-in-Cell (PIC) code QuickPIC demonstrate a significant increase in stopping power when beam electrons…

Plasma Physics · Physics 2021-09-15 Ian N. Ellis , David J. Strozzi , Warren B. Mori , Fei Li , Frank R. Graziani

Nonlinear wave--coupling is studied in a multi-species degenerate astrophysical plasma consisting of two electron species (at different temperatures): a highly degenerate main component plus a smaller classical relativistic flow immersed in…

Plasma Physics · Physics 2020-02-19 N. L. Shatashvili , S. M. Mahajan , V. I. Berezhiani

A Search for Extraterrestrial Life (SETI), based on the possibility of interstellar communication via laser signals, is being designed to extend the search into the near-infrared spectral region (Wright et al, this conference). The…

Instrumentation and Methods for Astrophysics · Physics 2015-06-22 Jérôme Maire , Shelley A. Wright , Dan Werthimer , Richard R. Treffers , Geoffrey W. Marcy , Remington P. S. Stone , Frank Drake , Andrew Siemion

Fusion-born alpha particles in ITER disruption simulations are investigated as a possible drive of Alfv\'enic instabilities. The ability of these waves to expel runaway electron (RE) seed particles is explored in the pursuit of a passive,…

Plasma Physics · Physics 2021-07-01 Andrej Lier , Gergely Papp , Philipp Lauber , Ola Embreus , George Wilkie , Stefanie Braun

Linear simulations of toriodal Alfv\'en eigenmodes (TAEs) driven by energetic particles (EPs) on EAST (Experimental Advanced Superconducting Tokamak) are performed using the hybrid-kinetic MHD (HK-MHD) model implemented in NIMROD code. The…

Plasma Physics · Physics 2019-05-07 Yawei Hou , Charlson C. Kim , Ping Zhu , Zhihui Zou , Youjun Hu , Xingting Yan , the NIMROD Team

A novel detector based on a polycrystalline diamond sensor is here employed in an advanced Time-Of-Flight scheme for the characterization of energetic ions accelerated during laser-matter interactions. The optimization of the detector and…

Time-Of-Flight (TOF) methods are very effective to detect particles accelerated in laser-plasma interactions, but they shows significant limitations when used in experiments with high energy and intensity lasers, where both high-energy ions…

Measurements which probe the energy dependence of $\alpha_s$, the coupling strength of the strong interaction, are reviewed. Jet counting in $e^+ e^-$ annihilation, combining results obtained in the centre of mass energy range from 22 to…

High Energy Physics - Experiment · Physics 2011-07-19 Siegfried Bethke

Measurements of HERA that explore the parton dynamics at low Bjorken x are presented together with precise determinations of the strong coupling constant alpha_s. Calculations at next to leading order using the DGLAP evolution fail to…

High Energy Physics - Experiment · Physics 2016-11-09 Dorian Kcira

We give a breezy, qualitative overview of some of our recent results on studying jet stopping in strongly-coupled plasmas using gauge-gravity duality. Previously, people have found that the maximum stopping distance in such plasmas scales…

High Energy Physics - Theory · Physics 2015-05-28 Peter Arnold , Diana Vaman

Ultra-relativistic quantum-electrodynamic (QED) plasmas, characterized by magnetic field strengths approaching and even exceeding the Schwinger field of approximately $B_{Q} \approx 4 \times 10^{13}$ gauss, hold significant interest for…

Plasma Physics · Physics 2026-02-05 Ryan T. Low , Mikhail V. Medvedev

The neutron time-of-flight facility n_TOF at CERN is a spallation source dedicated to measurements of neutron-induced reaction cross-sections of interest in nuclear technologies, astrophysics, and other applications. Since 2014,…

We study the dynamical and spectral characteristics of a quantum three-level ladder system, interacting with a continuous electromagnetic field in one-dimensional open waveguide. Common realization of such systems is a waveguide QED setup -…

Quantum Physics · Physics 2026-02-18 O. A. Chuikin , Ya. S. Greenberg , O. V. Kibis

Prompt photons are a powerful tool to study heavy ion collisions. Their production rates provide access to the initial state parton distribution functions and also provide a means to calibrate the expected energy of jets that are produced…

High Energy Physics - Experiment · Physics 2019-08-21 Peter Steinberg

The confinement of Neutral Beam Injection (NBI) particles in the presence of n=3 Resonant Magnetic Perturbations (RMPs) in 15 MA ITER DT plasmas has been studied using full orbit ASCOT simulations. Realistic NBI distribution functions, and…

We study the amplitude modulation of nonlinear kinetic Alfv{\'e}n waves (KAWs) in an intermediate low-beta magnetoplasma. Starting from a set of fluid equations coupled to the Maxwell's equations, we derive a coupled set of nonlinear…

Plasma Physics · Physics 2018-06-13 D. Chatterjee , A. P. Misra

Calculations using the AdS/CFT correspondence can be used to unveil the short-distance structure of a strongly coupled plasma, as it would be seen by a `hard probe'. The results of these calculations admit a natural physical interpretation…

High Energy Physics - Phenomenology · Physics 2009-01-14 Edmond Iancu
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