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In this study, we examine thermal conductivity and the thermal Hall effect in electron-ion plasmas relevant to hot neutron stars, white dwarfs, and binary neutron star mergers, focusing on densities found in the outer crusts of neutron…

High Energy Astrophysical Phenomena · Physics 2024-11-18 Arus Harutyunyan , Armen Sedrakian

Turbulence characteristics of electron cyclotron (EC) and ohmic heated (OH) discharges has been analyzed by electrostatic gyrokinetic simulations with GYRO [J. Candy, R.E. Waltz, Journal of Computational Physics 186, 545-581 (2003)] aiming…

Plasma Physics · Physics 2011-04-08 Istvan Pusztai , Sara Moradi , Tunde Fulop , Natalia Timchenko

Recent theories of hot-electron relaxation in dense hydrogen or deuterium are examined in the light of recent molecular-dynamics simulations as well as various theoretical developments within the two-temperature model. The theoretical work…

Statistical Mechanics · Physics 2017-06-07 M. W. C. Dharma-wardana

During the standard ac lock-in measurement of the resistance of a two-dimensional electron gas (2DEG) applying an ac current $I = \sqrt{2} I_0 \sin(\omega t)$, the electron temperature $T_e$ oscillates with the angular frequency $2 \omega$…

Mesoscale and Nanoscale Physics · Physics 2022-09-14 Akira Endo , Shingo Katsumoto , Yasuhiro Iye

Particle acceleration and heating at mildly relativistic magnetized shocks in electron-ion plasma are investigated with unprecedentedly high-resolution two-dimensional particle-in-cell simulations that include ion-scale shock rippling.…

Simulation results are presented to demonstrate electron temperature and electrical potential development in dilute and cold plasma development. The simulation method is a hybrid method which adopted fluid model for electrons due to their…

Plasma Physics · Physics 2024-09-13 Shiying Cai , Chunpei Cai , Zhen Zhang

We demonstrate feedback cooling of the center-of-mass motion of single charged nanoparticles to millikelvin temperatures in three dimensions via applying oscillating electric fields synchronized to their optically observed motion. The…

Mesoscale and Nanoscale Physics · Physics 2019-05-22 M. Iwasaki , T. Yotsuya , T. Naruki , Y. Matsuda , M. Yoneda , K. Aikawa

Electron-ion interactions play a central role for the energy relaxation processes and ultra-fast structure dynamics in laser-heated matter. The accurate prediction of the electron-ion energy exchange in a transient excited two-temperature…

Other Condensed Matter · Physics 2024-01-17 Jia Zhang , Rui Qin , Wenjun Zhu , Jan Vorberger

A calorimeter was built to measure the heat from a porous capacitive working electrode connected in a three-electrode configuration. This makes it possible to detect differences between cathodic and anodic heat production. The…

Instrumentation and Detectors · Physics 2022-12-09 Joren E. Vos , Hendrik P. Rodenburg , Danny Inder Maur , Ties J. W. Bakker , Henkjan Siekman , Ben H. Erné

Organic Photovoltaic devices (OPVs) are becoming adequately cost and energy efficient to be considered a good investment and it is, therefore, especially important to have a concrete understanding of their operation. We compute energies of…

Materials Science · Physics 2018-01-01 Vladimir Lankevich , Eric R Bittner

DIII-D discharges that transition to H-mode solely with off-axis electron cyclotron heating (ECH) often exhibit strong off-axis peaking of electron temperature profiles at the heating location. Electron heat transport properties near these…

Plasma Physics · Physics 2023-10-20 Ruifeng Xie , Max E. Austin , Kenneth W. Gentle , Craig C. Petty

Due to their structured density of states, molecular junctions provide rich resources to filter and control the flow of electrons and phonons. Here we compute the out of equilibrium current-voltage characteristics and dissipated heat of…

Mesoscale and Nanoscale Physics · Physics 2023-11-01 Fatemeh Tabatabaei , Samy Merabia , Bernd Gotsmann , Mika Prunnila , Thomas A. Niehaus

We present a theoretical study of the heat dissipation in single-molecule junctions. In order to investigate the heat dissipation in the electrodes and the relationship between the transmission spectra and the electronic structures, we…

Mesoscale and Nanoscale Physics · Physics 2016-08-09 Yaghoob Naimi , Javad Vahedi

In this work we solve thermo-hydrodynamical equations considering a two dimensional electron system in the integer quantum Hall regime, to calculate the spatial distribution of the local electron temperature. We start from the…

Mesoscale and Nanoscale Physics · Physics 2012-03-14 N. Boz Yurdaşan , K. Akgüngör , A. Siddiki , İ. Sökmen

Weakly magnetized shock waves are paramount to a large diversity of environments, including supernova remnants, blazars, and binary-neutron-star mergers. Understanding the distribution of energy between electrons and ions within these…

High Energy Astrophysical Phenomena · Physics 2024-10-22 Arno Vanthieghem , Vasileios Tsiolis , Frederico Fiuza , Kazuhiro Sekiguchi , Anatoly Spitkovsky , Yasushi Todo

We present the study of SOL2015-03-15 M1.2 flare, revealing acceleration of electrons and plasma heating in the sheared twisted magnetic structure in the polarity inversion line (PIL). The scope is to make the analysis of nonthermal…

Solar and Stellar Astrophysics · Physics 2018-09-19 I. N. Sharykin , I. V. Zimovets , I. I. Myshyakov , N. S. Meshalkina

Magnetic reconnection and associated heating of ions and electrons in strongly magnetised, weakly collisional plasmas are studied by means of gyrokinetic simulations. It is shown that an appreciable amount of the released magnetic energy is…

Plasma Physics · Physics 2019-02-20 R. Numata , N. F. Loureiro

We perform calculations of the {3D} finite-temperature homogeneous electron gas (HEG) in the warm-dense regime ({r_{s} \equiv (3/4\pi n)^{1/3}a_{B}^{- 1} = 1.0- 40.0} and {\Theta \equiv T/T_{F} = 0.0625- 8.0}) using restricted path integral…

Strongly Correlated Electrons · Physics 2013-04-10 Ethan W. Brown , Bryan K. Clark , Jonathan L. DuBois , David M. Ceperley

The rate of energy transfer between electrons and phonons is investigated by a first principles framework for electron temperatures up to $T_e=50000$ K while considering the lattice at ground state. Two typical but differently complex…

Other Condensed Matter · Physics 2022-03-08 Jia Zhang , Rui Qin , Wenjun Zhu , Jan Vorberger

We present a path-integral Monte Carlo study of dissociation in dense hydrogen ($1.75 \leq r_s \leq 2.2$, with $r_s$ the Wigner sphere radius). As temperature is lowered from $10^5$ to 5000 K, a molecular hydrogen gas forms spontaneously…

Condensed Matter · Physics 2009-10-28 W. R. Magro , D. M. Ceperley , C. Pierleoni , B. Bernu