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相关论文: Te/Ti effects on JET energy confinement properties

200 篇论文

In electrostatic simulations of MAST plasma at electron-gyroradius scales, using the local flux-tube gyrokinetic code GS2 with adiabatic ions, we find that the long-time saturated electron heat flux (the level most relevant to energy…

等离子体物理 · 物理学 2017-03-20 G J Colyer , A A Schekochihin , F I Parra , C M Roach , M A Barnes , Y-c Ghim , W Dorland

The capability of the global, electromagnetic gyrokinetic GENE code interfaced with the transport Tango solver is exploited to address the impact of fusion alpha particles (in their dual role of fast particles and heating source) on plasma…

Tokamak edge (scrape-off layer) plasmas can exhibit non-local transport in the direction parallel to the magnetic field due to steep temperature gradients. This effect along with its consequences has been explored at equilibrium for a range…

等离子体物理 · 物理学 2023-07-05 Dominic Power , Stefan Mijin , Michael Wigram , Fulvio Militello , Robert J. Kingham

We consider a system of $N$ particles living on the noncommutative plane in the presence of a confining potential and study its thermodynamics properties. Indeed, after calculating the partition function, we determine the corresponding…

统计力学 · 物理学 2020-01-08 Rachid Houça , Ahmed Jellal

A two-dimensional fluid model is used to investigate the electron heating dynamics and the production of neutral species in a capacitively coupled radio-frequency micro atmospheric pressure helium plasma jet -- specifically the COST jet --…

等离子体物理 · 物理学 2021-05-26 Yue Liu , Ihor Korolov , Torben Hemke , Lena Bischoff , Gerrit Hübner , Julian Schulze , Thomas Mussenbrock

We argue that the ratio of $\phi$ mesons multiplicity over cube of the mean $p_T$ is proportional to the degeneracy of the medium produced in ultra-relativistic heavy ion collisions. The ratio extracted from the existing $\phi$ meson data…

核理论 · 物理学 2014-11-20 A. K. Chaudhuri

Employing the Monte-Carlo method and the exact diagonalization, we have investigated the temperature dependence of the thermoelectric power (TEP) for the double exchange model in the dilute carrier concentration limit. We have found that…

强关联电子 · 物理学 2009-11-13 Beom Hyun Kim , Unjong Yu , Kyoo Kim , B. I. Min

The thermoelectric (TE) properties of a material are dramatically altered when electron-electron interactions become the dominant scattering mechanism. In the degenerate hydrodynamic regime, the thermal conductivity is reduced and becomes a…

介观与纳米尺度物理 · 物理学 2019-05-01 Trond I. Andersen , Thomas B. Smith , Alessandro Principi

We report a heat dynamics analysis of the electrocaloric effect (ECE) in commercial multilayer capacitors based on BaTiO3 dielectric, a promising candidate for applications as a solid state cooling device. Direct measurements of the time…

材料科学 · 物理学 2015-06-03 M. Quintero , F. Gomez-Marlasca , L. Ghivelder , F. Parisi

In cellular environment, confinement and macromulecular crowding play an important role on thermal stability and folding kinetics of a protein. We have resorted to a generalized version of the Wako-Saito-Munoz-Eaton model for protein…

生物物理 · 物理学 2012-02-09 Michele Caraglio , Alessandro Pelizzola

Using high resolution kinetic (VPPM-OMP 1.0) and fluid (BOUT++) solvers, evolution of long-wavelength electron plasma wave (EPW) in the presence of stationary periodic ion background non-uniformity is investigated. Mode coupling dynamics…

等离子体物理 · 物理学 2022-06-17 Sanjeev Kumar Pandey , Jagannath Mahapatra , Rajaraman Ganesh

Performances of the symmetric universal and phase-covariant cloning transformations and entanglement cloners -- qubit case -- are investigated when the initial state of the hardware or the original state to be cloned is weakly coupled to a…

量子物理 · 物理学 2009-02-12 S. Baghbanzadeh , A. T. Rezakhani

Turbulence driven by small scale instabilities causes large heat and particle transport and is a major limiting factor of current fusion devices. Above a critical value, the ion temperature gradient leads to the growth of a microinstability…

等离子体物理 · 物理学 2017-12-12 Aylwin Iantchenko

There is a dichotomy in the nonequilibrium dynamics of quantum many body systems. In the presence of integrability, expectation values of local operators equilibrate to values described by a generalized Gibbs ensemble, which retains…

强关联电子 · 物理学 2019-05-15 Neil J. Robinson , Andrew J. A. James , Robert M. Konik

Non-radiating protons in the radio lobes have an essential role to form the jet morphology which is shown by recent radio and X-ray observations. However, since protons and electrons are not always in energy equilibrium due to weak Coulomb…

高能天体物理现象 · 物理学 2023-10-04 Takumi Ohmura , Mami Machida

We investigate the effects of collective modes on the temperature relaxation rates in fully coupled electron-ion systems. Firstly, the well-understood limit of weakly coupled plasmas is considered and the coupled mode formula within the…

等离子体物理 · 物理学 2015-05-13 J. Vorberger , D. O. Gericke

The collisional coupling of relativistic electrons and non-relativistic ions in hot plasmas has been analysed. It is found that relativistic effects produce a new feature: while the condition T_e<3T_i guarantees a stable collisional…

等离子体物理 · 物理学 2013-02-12 I. Marushchenko , N. A. Azarenkov , N. B. Marushchenko

Confined electrons in low dimensions host desirable material functions for downscaled electronics as well as advanced energy technologies. Thermoelectricity is a most fascinating example, since the dimensionality modifies the electron…

材料科学 · 物理学 2022-10-24 Naoki Kouda , Kyohei Eguchi , Ryuji Okazaki , Masafumi Tamura

This paper reports the impact on confinement and power load of the high-shape 2.5MA ELMy H-mode scenario at JET of a change from an all carbon plasma facing components to an all metal wall. In preparation to this change, systematic studies…

It is shown that rapid substantial changes in heating rate can induce transitions to improved energy confinement regimes in zero-dimensional models for tokamak plasma phenomenology. We examine for the first time the effect of step changes…

等离子体物理 · 物理学 2014-06-19 H. Zhu , S. C. Chapman , R. O. Dendy , K. Itoh