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The polytropic index of electrons in a magnetized plasma is experimentally investigated in the presence of heating and anisotropic work done, incorporating the effective dimensionality arising from temperature anisotropy. The study is…

等离子体物理 · 物理学 2024-10-18 Ayesha Nanda , Sudeep Bhattacharjee

Several mechanisms by which an external electromagnetic field influences the temperature of a plasma are studied analytically and specialized to the system of an ultracold plasma (UCP) driven by a uniform radio frequency (RF) field. Heating…

等离子体物理 · 物理学 2015-06-04 P. W. Smorenburg , L. P. J. Kamp , O. J. Luiten

Three-dimensional hybrid PIC simulations are presented to study electron energy transport and deposition in a full-scale fast ignition configuration. Multi-prong core heating close to ignition is found when a few GA, few PW beam is…

等离子体物理 · 物理学 2007-05-23 J. J. Honrubia , J. Meyer-ter-Vehn

Flux emergence is ubiquitous in the Sun's lower atmosphere, where the emerging magnetic flux can reconnect with the pre-existing magnetic field. We investigate plasmoid formation and the resulting multi-thermal emissions during…

太阳与恒星天体物理 · 物理学 2025-08-18 Guanchong Cheng , Lei Ni , Robert Cameron , Hardi Peter , Yajie Chen , Jun Lin

We derived the coronal magnetic field, plasma density, and temperature from the observation of polarization and intensity of radio thermal free-free emission using the Nobeyama Radioheliograph (NoRH) and extreme ultraviolet (EUV)…

We perform 3D3V hybrid-Vlasov simulations of turbulence with quasi-isotropic, compressible injection near ion scales to mimic the Earth's magnetosheath plasma, and investigate the novel electron-only reconnection, recently observed by the…

等离子体物理 · 物理学 2024-08-05 C. Granier , S. S. Cerri , F. Jenko

When propagating inside dielectrics, an ultrafast Bessel beam creates a high aspect-ratio cylinder of plasma with nanometric diameter that extends over several tens of micrometers to centimeters. We analyze the interaction between the…

等离子体物理 · 物理学 2023-01-09 Kazem Ardaneh , Remo Giust , Pierre-Jean Charpin , Benoit Morel , Francois Courvoisier

Radio Frequency (RF) driven helicon plasma sources are commonly used for their ability to produce high-density argon plasmas (n > 10^19/m^3) at relatively moderate powers (typical RF power < 2 kW). Typical electron temperatures are < 10 eV…

等离子体物理 · 物理学 2021-01-01 S. Chakraborty Thakur , M. Paul , E. M. Hollmann , E. Lister , E. E. Scime , S. Sadhu , T. E. Steinberger , G. R. Tynan

We propose an all-optical, single-laser-pulse scheme for generating dense, relativistic, strongly-magnetized electron-positron pair plasma. The scheme involves the interaction of an extremely intense ($I \gtrsim \SI{e24}{\watt/\cm^2}$)…

等离子体物理 · 物理学 2024-09-17 Alexander Samsonov , Alexander Pukhov

We simulate a coronal mass ejection (CME) using a three-dimensional magnetohydrodynamic (MHD) code that includes coronal heating, thermal conduction, and radiative cooling in the energy equation. The magnetic flux distribution at 1 R$_s$ is…

太阳与恒星天体物理 · 物理学 2020-01-08 Katharine K. Reeves , Tibor Török , Zoran Mikić , Jon Linker , Nicholas A. Murphy

One of the main objectives of the LHD is to extend the plasma confinement database for helical systems and to demonstrate such extended plasma confinement properties to be sustained in steady state. Among the various plasma parameter…

等离子体物理 · 物理学 2015-06-26 Shin Kubo

We propose an efficient mechanism to heat a plasma by an intense microwave field solving the equation of ion motion in a wave field and a constant magnetic field in a large coupling regime. The mechanism does not relies explicitly on…

等离子体物理 · 物理学 2007-05-23 Marco Frasca

Anomalous motional heating is a major obstacle to scalable quantum information processing with trapped ions. While the source of this heating is not yet understood, several previous studies suggest that surface contaminants may be largely…

原子物理 · 物理学 2015-09-02 Robert McConnell , Colin Bruzewicz , John Chiaverini , Jeremy Sage

Context. Coronal heating is currently thought to proceed via the mechanism of nanoflares, small-scale and possibly recurring heating events that release magnetic energy. Aims. We investigate the effects of a periodic high-energy electron…

太阳与恒星天体物理 · 物理学 2016-04-27 Elena Dzifcakova , Jaroslav Dudik , Simon Mackovjak

We present a theoretical interpretation of the recently revealed features of temperature evolution in the ultracold plasma clouds released from a magneto-optical trap, namely: (a) its independence at the sufficiently large times on the…

等离子体物理 · 物理学 2009-05-12 Yurii V. Dumin

We perform a high-resolution two-dimensional fully-kinetic numerical simulation of a turbulent plasma system with observation-driven conditions, in order to investigate the interplay between turbulence, magnetic reconnection, and particle…

Aneutronic and nonradioactive properties make the proton-boron fusion a prospective candidate for fusion energy production through reactions following p+$^{11}$B$\rightarrow$3${\alpha}$ (p-$^{11}$B). However, it is difficult to achieve a…

There is mounting observational evidence from Chandra for strong interaction between keV gas and AGN in cooling flows. It is now widely accepted that the temperatures of cluster cores are maintained at a level of 1 keV and that the mass…

天体物理学 · 物理学 2010-04-06 Mateusz Ruszkowski , Mitchell C. Begelman

In systems accreting well below the Eddington rate, the plasma in the innermost regions of the disk is collisionless and two-temperature, with the ions hotter than the electrons. Yet, whether a collisionless faster-than-Coulomb energy…

高能天体物理现象 · 物理学 2015-06-23 Lorenzo Sironi , Ramesh Narayan

Atmospheric pressure helium plasmas are investigated through molecular dynamics simulations at room temperature (300 K) for various ionization fractions ($\chi_i = 10^{-1} - 10^{-5}$) in the strongly coupled regime (ion coupling parameter,…

等离子体物理 · 物理学 2024-10-24 Swati Swagatika Mishra , Pascal Brault , Sudeep Bhattacharjee