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Related papers: Te/Ti effects on JET energy confinement properties

200 papers

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…

Plasma Physics · Physics 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…

Plasma Physics · Physics 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…

Statistical Mechanics · Physics 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 --…

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…

Nuclear Theory · Physics 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…

Strongly Correlated Electrons · Physics 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…

Mesoscale and Nanoscale Physics · Physics 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…

Materials Science · Physics 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…

Biological Physics · Physics 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…

Plasma Physics · Physics 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…

Quantum Physics · Physics 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…

Plasma Physics · Physics 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…

Strongly Correlated Electrons · Physics 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…

High Energy Astrophysical Phenomena · Physics 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…

Plasma Physics · Physics 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…

Plasma Physics · Physics 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…

Materials Science · Physics 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…

Plasma Physics · Physics 2014-06-19 H. Zhu , S. C. Chapman , R. O. Dendy , K. Itoh