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200 papers

Electro-coalescence is the application of an electric field onto coalescing fluid bodies. The following fluid dynamics videos show a droplet coalescing into a fluid bath while embedded into a viscous medium and subject to a very high…

Fluid Dynamics · Physics 2015-05-14 H. Aryafar , H. P. Kavehpour

Use of explicit methods for simulating electrical circuits, especially for power electronics applications, is described. Application of the forward Euler method to a half-wave rectifier is discussed, and the limitations of a fixed-step…

Computational Engineering, Finance, and Science · Computer Science 2023-01-12 Mahesh B. Patil , V. V. S. Pavan Kumar Hari

Previous formulations of heating and transport associated with strong magnetohydrodynamic (MHD) turbulence are generalized to incorporate separate internal energy equations for electrons and protons. Electron heat conduction is included.…

Solar and Stellar Astrophysics · Physics 2015-05-13 B. Breech , W. H. Matthaeus , S. R. Cranmer , J. C. Kasper , S. Oughton

This book chapter gives an introduction to, and an overview of, methods for cooling trapped ions. The main addressees are researchers entering the field. It is not intended as a comprehensive survey and historical account of the extensive…

Quantum Physics · Physics 2017-08-23 Daniel M. Segal , Christof Wunderlich

An equation of motion is derived for a topologically cylindrical worldsheet of lightlike electromagnetic current, embedded in 3+1 dimensions in a smooth external electromagnetic field. Then it is shown that the static circle of uniformly…

Classical Physics · Physics 2012-12-24 J. Margulies

Generation of thermal convection flow in the liquid metal battery, a device recently proposed as a promising solution for the problem of the short-term energy storage, is analyzed using a numerical model. It is found that convection caused…

Fluid Dynamics · Physics 2017-01-25 Yuxin Shen , Oleg Zikanov

We introduce a new class of mesoscopic heat engines consisting of a tunnel junction coupled to a linear thermal bath. Work is produced by transporting electrons up against a voltage bias like in ordinary thermoelectrics but heat is…

Mesoscale and Nanoscale Physics · Physics 2012-08-01 Tomi Ruokola , Teemu Ojanen

A theoretical description of time correlation functions for electron properties in the presence of a positive ion of charge number Z is given. The simplest case of an electron gas distorted by a single ion is considered. A semi-classical…

Statistical Mechanics · Physics 2009-11-13 Jeffrey M. Wrighton , James W. Dufty

Bose--Einstein condensation of a finite number of photons propagating inside a plasma-filled microcavity is investigated. The nonzero chemical potential is provided by the electrons, which induces a finite photon mass allowing condensation…

Plasma Physics · Physics 2023-07-26 J. L. Figuiredo , H. Terças , J. T. Mendonça

We give a general method for finding the exact solution for the problem of electronic relaxation in solution, modeled by a particle undergoing diffusive motion under a potential in the presence of a sink of finite width. The solution…

Statistical Mechanics · Physics 2018-04-17 Swati Mudra , Hemani Chhabra , Aniruddha Chakraborty

We show that entanglement of multiple atoms can arise via resonant interaction with a displaced thermal field with a macroscopic photon-number. The cavity field acts as the catalyst, which is disentangled with the atomic system after the…

Quantum Physics · Physics 2012-03-08 Shi-Biao Zheng

The atomic movement induced on melting has to overcome a viscous drag resistance. It is suggested that the latent heat of fusion supplies the required energy for this physical process. The viscosity model introduced here allows computation…

Chemical Physics · Physics 2009-11-10 Jozsef Garai

Microwave heating of a high-temperature plasma confined in a large-scale open magnetic trap, including all important wave effects like diffraction, absorption, dispersion and wave beam aberrations, is described for the first time within the…

Plasma Physics · Physics 2016-11-29 A. G. Shalashov , A. A. Balakin , E. D. Gospodchikov , T. A. Khusainov

We consider a system of equations that model the temperature, electric potential and deformation of a thermoviscoelastic body. A typical application is a thermistor; an electrical component that can be used e.g. as a surge protector,…

Numerical Analysis · Mathematics 2018-04-09 Axel Målqvist , Tony Stillfjord

We present a theoretical analysis of the evaporative cooling of an atomic beam propagating in a magnetic guide. Cooling is provided by transverse evaporation. The atomic dynamics inside the guide is analyzed by solving the Boltzmann…

Statistical Mechanics · Physics 2009-10-31 E. Mandonnet , A. Minguzi , R. Dum , I. Carusotto , Y. Castin , J. Dalibard

The purpose of this work is to produce a family of equations describing the evolution of the temperature in a rigid heat conductor. This is obtained by means of successive approximations of the Fourier law, via memory relaxations and…

Analysis of PDEs · Mathematics 2022-07-05 Filippo Dell'Oro , Vittorino Pata

We investigate the relaxation of braided magnetic loops in order to find out how the type of braiding via footpoint motions affects resultant heating of the loop. Two magnetic loops, braided in different ways, are used as initial conditions…

Solar and Stellar Astrophysics · Physics 2015-06-03 A. L. Wilmot-Smith , D. I. Pontin , A. R. Yeates , G. Hornig

Out of thermal equilibrium, an environment imposes effective mechanical forces on microscopical nanofabricated devices, chemical or biological systems. Here we address the question of how to calculate these forces together with the response…

Statistical Mechanics · Physics 2017-05-24 A. Feigel

Seventy crossings of the Earths bow shock by the THEMIS satellites have been used to study thermal electron heating in collisionless, quasi-perpendicular shocks. It was found that the temperature increase of thermal electrons differed from…

Plasma Physics · Physics 2013-02-11 F. S. Mozer , David Sundkvist

Magnetic trapping is a cornerstone for modern ultracold physics and its applications (e.g., quantum information processing, quantum metrology, quantum optics, or high-resolution spectroscopies). Here a comprehensive analysis and discussion…

Quantum Gases · Physics 2013-10-24 J. Pérez-Ríos , A. S. Sanz