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Related papers: Global Alfven Eigenmodes in the H-1 heliac

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We study simultaneous evolution of large scale hypermagnetic fields and the asymmetries of quarks, leptons and Higgs boson in the temperature range from 10TeV to 100GeV. Above 10TeV, we identify all of the major fast interactions and use…

High Energy Physics - Phenomenology · Physics 2019-05-15 S. Rostam Zadeh , S. S. Gousheh

High Electron Mobility Transistors (HEMTs) are most suitable for harsh environments as they operate reliably under extreme conditions such as high voltages, high temperatures, radiation exposure and corrosive atmospheres. In this article,…

Signal Processing · Electrical Eng. & Systems 2025-10-13 Tanjim Rahman , Trupti Ranjan Lenka

Hydrogen uptake in complex multicomponent alloys, including high-entropy alloys (HEAs), governs both hydrogen storage capacity and resistance to hydrogen-induced degradation. We combine high-pressure experiments, density-functional theory…

The shear Alfv\'en continuum spectrum is studied for a tokamak with a single island chain using the ideal Magnetohydrodynamics (MHD) theory. We have taken into account the toroidal geometry and toroidal mode coupling with the island…

Plasma Physics · Physics 2022-12-28 Zhisong Qu , Matthew Hole

Using the asymptotic iteration method (AIM) we investigate the variation in the 1s energy levels of hydrogen and helium-like static ions in fully degenerate electron gas. The semiclassical Thomas-Fermi (TF), Shukla-Eliasson (SE) and…

Quantum Gases · Physics 2020-04-22 M. Akbari-Moghanjoughi , Alireza Abdikian , Arash Phirouznia

We study the behaviour of multiple radiative cooling algorithms implemented in seven Semi-Analytic Models (SAMs) of galaxy formation, including a new model we propose in this paper. We use versions of the models without feedback and apply…

Cosmology and Nongalactic Astrophysics · Physics 2011-09-29 Yu Lu , Dušan Kereš , Neal Katz , H. J. Mo , Mark Fardal , Martin D. Weinberg

High harmonic generation (HHG) in gaseous media provides a robust method for producing coherent extreme-ultraviolet (EUV) radiation and attosecond pulses. However, the spectral and temporal properties of these pulses -- such as bandwidth…

Nonlinear saturation of toroidal Alfven eigenmode (TAE) via ion induced scatterings is investigated in the short-wavelength gyrokinetic regime. It is found that the nonlinear evolution depends on the thermal ion \b{eta} value. Here, \b{eta}…

Plasma Physics · Physics 2019-09-04 Zhiyong Qiu , Liu Chen , Fulvio Zonca

Short-lived hadronic resonances are unique tools for studying the hadron-gas phase that is created in the late stages of relativistic heavy-ion collisions. Measurements of the yield ratios between resonances and the corresponding stable…

Nuclear Experiment · Physics 2024-01-25 Johanna Lömker

Non-helical hydromagnetic turbulence with an externally imposed magnetic field is investigated using direct numerical simulations. It is shown that the imposed magnetic field lowers the spectral magnetic energy in the inertial range. This…

Astrophysics · Physics 2007-05-23 Nils Erland L. Haugen , Axel Brandenburg

In the initial stages of ITER operation, ELM mitigation systems need to be commissioned. This requires controlled flat-top operation in type-I ELMy H-mode regimes. Hydrogen or helium plasma discharges are used exclusively in these stages to…

The theoretical investigation of relevant turbulent transport mechanisms in H-mode pedestals is a great scientific and numerical challenge. In this study, we address this challenge by global, nonlinear gyrokinetic simulations of a full…

Plasma Physics · Physics 2023-03-21 L. A. Leppin , T. Görler , M. Cavedon , M. G. Dunne , E. Wolfrum , F. Jenko , the ASDEX Upgrade Team

We investigate High-harmonic generation (HHG) in a dimerized Kitaev chain. The dimerization in the model is introduced through a site-dependent modulating potential, determined by a parameter $\lambda \in [-1:1]$. This parameter also…

Other Condensed Matter · Physics 2025-06-06 Nivash R. , S. Srinidhi , Jayendra N. Bandyopadhyay , Amol R. Holkundkar

A particle-in-cell (PIC) simulation study is performed to investigate the discharge asymmetry, higher harmonic generations and electron heating mechanism in a low pressure very high frequency capacitively coupled plasma (CCP) excited by a…

Plasma Physics · Physics 2020-12-02 Sarveshwar Sharma , Nishant Sirse , Miles M Turner

The confinement of energetic particles (EPs) generated by fusion reactions and external heating methods is crucial for the performance of future fusion devices. However, EP transport can occur due to their interaction with electromagnetic…

Plasma Physics · Physics 2023-06-16 V. -A. Popa , Ph. Lauber , T. Hayward-Schneider , M. Schneider , O. Hoenen , S. Pinches

The magnetic energy of nonlinear Alfven waves in compressible plasmas may be ponderomotively coupled only to ion-acoustic quasi-modes which modulate the wave phase velocity and cause wave-front steepening. In the collisionless plasma with…

Astrophysics · Physics 2009-10-31 M. V. Medvedev

We consider ion heating by turbulent Alfven waves (AWs) and kinetic Alfven waves (KAWs) with perpendicular wavelengths comparable to the ion gyroradius and frequencies smaller than the ion cyclotron frequency. When the turbulence amplitude…

Solar and Stellar Astrophysics · Physics 2015-05-14 Benjamin D. G. Chandran , Bo Li , Barrett N. Rogers , Eliot Quataert , Kai Germaschewski

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

We present experimental observations of electron-scale structures in an expanding high-energy-density (HED) plasma generated with a modest intensity $\sim 2 \times 10^{14}$ W/cm$^2$, $\sim1$ ns laser. The observed structures have…

The selfgenerated wave fluctuations are particularly interesting in the solar wind and magnetospheric plasmas, where Coulomb collisions are rare and cannot explain the observed states of quasi-equilibrium. Linear theory predicts that the…

Solar and Stellar Astrophysics · Physics 2015-06-16 M. Lazar , S. Poedts , R. Schlickeiser , D. Ibscher
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