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We consider the generation of electric currents in the solar chromosphere where the ionization level is typically low. We show that ambient electrons become magnetized even for weak magnetic fields (30 G); that is, their gyrofrequency…

Solar and Stellar Astrophysics · Physics 2010-11-29 V. Krasnoselskikh , G. Vekstein , H. S. Hudson , S. D. Bale , W. P. Abbett

Measurements of surface temperature fields are used to determine the heat transfer by conduction and convection from an inhomogeneously heated metallic tube into environment. For most of the here reported measurements we use a low-cost…

Applied Physics · Physics 2019-09-05 Samuel Jankových , Peter Bokes

Electrophoresis has been shown as a novel methodology to enhance heat conduction capabilities of nanocolloidal dispersions. A thoroughly designed experimental system has been envisaged to solely probe heat conduction across nanofluids by…

Applied Physics · Physics 2018-07-10 Purbarun Dhar , Lakshmi Sirisha Maganti , A R Harikrishnan , Chandan Rajput

Phase-separated magnetic fluids provide a very strong magnetic response ($\mu>25$) in a liquid state material. Even small fields can cause a notable material response, but this depends on its properties, which are often difficult to…

Soft Condensed Matter · Physics 2024-05-10 Laura Nelsone , Guntars Kitenbergs

Test particle studies of electron scattering on ions, in an oscillatory electromagnetic field have shown that standard theoretical assumptions of small angle collisions and phase independent orbits are incorrect for electron trajectories…

Plasma Physics · Physics 2009-11-07 A. Brantov , W. Rozmus , V. Yu. Bychenkov , V. T. Tikhonchuk , R. Sydora , C. E. Capjack

We consider the process of cooling of a heavy particle beam in a co-moving electron beam of low temperature guided by a solenoidal magnetic field. This paper summarizes the main results of theoretical studies of this process conducted by…

Accelerator Physics · Physics 2017-06-02 Yaroslav S. Derbenev

Two preceding parts of a paper (cond-mat/0508457, cond-mat/0508460) considered the heuristic values of recent experiments pointing to the nearly universal occurrence of photovoltages across solid surfaces under short-circuit conditions.…

Materials Science · Physics 2007-06-27 O. Ivanov , Eugene Leyarovski , V. Lovchinov , Chr. Popov , M. Kamenova , M. Georgiev

We extend and reconcile recent work on turbulence and particle heating in advection-dominated accretion flows. For approximately equipartition magnetic fields, the turbulence primarily heats the electrons. For weaker magnetic fields, the…

Astrophysics · Physics 2009-10-30 Eliot Quataert , Andrei Gruzinov

Electron heating in an ultracold neutral plasma is modeled using classical molecular dynamics simulations in the presence of an externally applied magnetic field. A sufficiently strong magnetic field is found to reduce disorder induced…

Plasma Physics · Physics 2018-02-14 Sanat Kumar Tiwari , Scott D. Baalrud

Contribution to thermal conductivity from conduction electron scattering on crystal field magnetic excitations is calculated and analyzed for normal rare-earth inter-metallic paramagnets. It is shown that in temperatures much lower than…

Strongly Correlated Electrons · Physics 2018-08-24 Aleksandra E. Szukiel

The transport properties of organic light-emitting diodes in which the emissive layer is composed of conjugated polymers in the liquid-crystalline phase have been investigated. We have performed simulations of the current transient response…

Condensed Matter · Physics 2009-11-07 S. J. Martin , A. Kambili , A. B. Walker

In the innermost regions of low-luminosity accretion flows, including Sgr A* at the center of our Galaxy, the frequency of Coulomb collisions is so low that the plasma is two-temperature, with the ions substantially hotter than the…

High Energy Astrophysical Phenomena · Physics 2015-06-23 Lorenzo Sironi

In this article it is shown that in He\nobreakdash-II placed in a magnetic field $\mathbf{H}$, the heat flow under the influence of a temperature gradient $\nabla T$ causes appearance of an electric field…

Other Condensed Matter · Physics 2019-10-02 S. I. Shevchenko , A. M. Konstantinov

We use the one-dimensional object-oriented particle-in-cell Monte Carlo collision code oopd1 to explore the charged particle densities, the electronegativity, the electron energy probability function (EEPF), and the electron heating…

Plasma Physics · Physics 2017-11-28 Jon Tomas Gudmundsson , David I. Snorrason

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…

High Energy Astrophysical Phenomena · Physics 2015-06-23 Lorenzo Sironi , Ramesh Narayan

We consider the influence of electric field gradients on the phase behavior of nonpolar binary mixtures. Small fields give rise to smooth composition profiles, whereas large enough fields lead to a phase-separation transition. The critical…

Statistical Mechanics · Physics 2015-05-13 Sela Samin , Yoav Tsori

Using the finite element method we quantitatively analyse temperature field evolution in a viscoelastic solid undergoing a loading--unloading process. In particular we investigate the temperature field inside a Kelvin--Voigt type…

Soft Condensed Matter · Physics 2021-05-17 Vít Průša , Karel Tůma

The influence has been studied of the ionization laser polarization on the effective temperature of an ultracold electron source, which is based on near-threshold photoionization. This source is capable of producing both high-intensity and…

Atomic Physics · Physics 2013-12-24 W. J. Engelen , D. J. Bakker , O. J. Luiten , E. J. D. Vredenbregt

We study the effects of thermal conduction in a hot, active corona above an accretion disk. We assume that all of the dissipative heating takes place in the corona. We find that the importance of conduction decreases with increases in the…

Astrophysics · Physics 2009-10-30 Andrzej Maciolek-Niedzwiecki , Julian H. Krolik , Andrzej A. Zdziarski

Recent work on layered structures of superconductors (S) or normal metals (N) in contact with ferromagnetic insulators (FI) has shown how the properties of the previous can be strongly affected by the magnetic proximity effect due to the…

Mesoscale and Nanoscale Physics · Physics 2019-07-24 Subrata Chakraborty , Tero T. Heikkilä