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Long-term simulations of energetic electron fluxes in many space plasma systems require accounting for two groups of processes with well separated time-scales: microphysics of electron resonant scattering by electromagnetic waves and…

Plasma Physics · Physics 2021-10-04 A. S. Lukin , A. V. Artemyev , A. A. Petrukovich

The collapse of young massive stars or the coalescence of a black hole-neutron star binary is expected to give rise to a black hole-torus system. When the torus is strongly magnetized, the black hole produces electron-positron outflow along…

Astrophysics · Physics 2009-10-31 Maurice H. P. M. van Putten

We derive the modified Dirac equation for an electron undergos an influence of the standard model interaction with the nuclear matter. The exact solutions for this equation and the electron energy spectrum in matter are obtained. This…

High Energy Physics - Phenomenology · Physics 2009-11-11 Alexander Grigoriev , Sergey Shinkevich , Alexander Studenikin , Alexei Ternov , Ilya Trofimov

The effect of a magnetic field on the characteristics of capacitively coupled radio frequency discharges is investigated and found to be substantial. A one-dimensional particle-in-cell simulation shows that geometrically symmetric…

An exact analogy of electromagnetic fields and particles can be found in continuum mechanics of a turbulent perfect fluid with voids. Deviations of the turbulence from a homogeneous isotropic state correspond to electromagnetic fields: with…

General Physics · Physics 2022-03-02 Valery P. Dmitriyev

We performed ab-initio Particle-In-Cell (PIC) simulations of a pulsar magnetosphere with electron-positron plasma produced only in the regions close to the neutron star surface. We study how the magnetosphere transitions from the vacuum to…

High Energy Astrophysical Phenomena · Physics 2018-05-10 Gabriele Brambilla , Constantinos Kalapotharakos , Andrey Timokhin , Alice Harding , Demosthenes Kazanas

We consider the electron-positron plasma generation processes in the magnetospheres of magnetars - neutron stars with strong surface magnetic fields, B = 10^(14) - 10^(15) G. We show that the photon splitting in a magnetic field, which is…

Astrophysics · Physics 2010-12-30 Ya. N. Istomin , D. N. Sobyanin

At the electron scales the power spectrum of solar-wind magnetic fluctuations can be highly variable and the dissipation mechanisms of the magnetic energy into the various particle species is under debate. In this paper we investigate data…

Stochastic acceleration of electrons and protons by waves propagating parallel to the large scale magnetic fields of magnetized plasmas is studied with emphasis on the feasibility of accelerating particles from a thermal background to…

Astrophysics · Physics 2016-08-16 Vahé Petrosian , Siming Liu

Electrons released from clusters through strong Xray pulses show broad kinetic-energy spectra, extending from the atomic excess energy down to the threshold, where usually a strong peak appears. These low-energy electrons are normally…

Atomic and Molecular Clusters · Physics 2015-07-21 A. Camacho Garibay , U. Saalmann , J. M. Rost

We develop a kinetic theory for {the electron strahl, a beam of energetic electrons which propagate} from the sun along the Parker-spiral-shaped magnetic field lines. By assuming a Maxwellian electron distribution function in the near-sun…

Plasma Physics · Physics 2019-09-25 Stanislav Boldyrev , Konstantinos Horaites

Electrons can be accelerated to ultrarelativistic energies at strong (high-Mach number) collisionless shock waves that form when stellar debris rapidly expands after a supernova. Collisionless shock waves also form in the flow of particles…

High Energy Astrophysical Phenomena · Physics 2015-06-12 A. Masters , L. Stawarz , M. Fujimoto , S. J. Schwartz , N. Sergis , M. F. Thomsen , A. Retinò , H. Hasegawa , G. R. Lewis , A. J. Coates , P. Canu , M. K. Dougherty

Utilizing time-resolved Kerr rotation techniques, we have investigated the spin dynamics of a high mobility, low density two dimensional electron gas in a GaAs/Al0:35Ga0:65As heterostructure in dependence on temperature from 1.5 K to 30 K.…

Other Condensed Matter · Physics 2009-11-13 X. Z. Ruan , H. H. Luo , Yang Ji , Z. Y. Xu , V. Umansky

The electron motion in rather strong magnetic fields (when only the lowest Landau level is populated) is considered. In this case the electron kinetic energy is frozen out and the electrons are guided by slowly varied potential. Using the…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 A. Matulis

When a laser field is incident on an overdense plasma it is unable to penetrate inside it. Nevertheless, a part of its energy gets transferred to the electrons through a variety of mechanisms (e.g. vacuum and $\vec{J}\times \vec{B}) heating…

Plasma Physics · Physics 2020-11-18 Devshree Mandal , Ayushi Vashistha , Amita Das

We investigate the acceleration of charged particles (both electrons and protons) at collisionless shocks predicted to exist in the vicinity of solar flares. The existence of standing termination shocks has been examined by flare models and…

High Energy Astrophysical Phenomena · Physics 2015-06-04 Fan Guo , Joe Giacalone

Electron temperature anisotropies and electron beams are nonthermal features of the observed nonequilibrium electron velocity distributions in the solar wind. In collision-poor plasmas these nonequilibrium distributions are expected to be…

Space Physics · Physics 2020-10-21 Heyu Sun , Jinsong Zhao , Wen Liu , Huasheng Xie , Dejin Wu

We present a detailed analysis of electron trajectories within the sheath regions of capacitively coupled plasmas excited by radio-frequency voltage waveforms at low pressures. Complex features inside the sheaths are identified in several…

Plasma Physics · Physics 2020-10-01 Mate Vass , Aranka Derzsi , Julian Schulze , Zoltan Donko

The one-dimensional flight of a fast electron flux in plasma is investigated taking into account generation and absorption of plasma waves. The transition from the kinetic description to the gas dynamics is made. The closed set of gas…

Plasma Physics · Physics 2018-02-23 V. N. Mel'Nik

A self-consistent hybrid model of standing and moving striations was developed for low-current DC discharges in noble gases. We introduced the concept of surface diffusion in phase space described by a tensor diffusion in the nonlocal…

Plasma Physics · Physics 2022-05-25 Vladimir I. Kolobov , Juan Alonso Guzman , Robert R. Arslanbekov