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200 papers

The linear stability analysis of an optically thin plasma where a general reaction proceeds, including chemical relaxation time effects, is carried out . A fifth order dispersion equation (instead of the fourth order one resulting when such…

Astrophysics · Physics 2007-05-23 Miguel H. Iba~nez S.

The electron residual energy originated from the stochastic heating in under-dense field-ionized plasma is here investigated. The optical response of plasma is initially modeled by using the concept of two counter-propagating…

Plasma Physics · Physics 2018-04-26 Elnaz Khalilzadeh , Jam Yazdanpanah , Jafar Jahanpanah , Amir Chakhmachi , Elnaz Yazdani

Plasma in the earth's magnetosphere is subjected to compression during geomagnetically active periods and relaxation in subsequent quiet times. Repeated compression and relaxation is the origin of much of the plasma dynamics and…

Plasma Physics · Physics 2020-08-19 Gurudas Ganguli , Chris Crabtree , Alex Fletcher , Bill Amatucci

The phenomenon that a system at a hot temperature cools faster than at a warm temperature, referred to as the Mpemba effect, has been recently realized for trapped colloids. Here, we investigate the cooling and heating process of a…

Soft Condensed Matter · Physics 2022-10-05 Fabian Jan Schwarzendahl , Hartmut Löwen

A charge bunch moving in a plasma can excite a variety of linear and nonlinear waves in the form of trailing wakes, fore-wake shocks and precursor solitons. These structures can further interact with the background plasma to create…

Plasma Physics · Physics 2023-03-08 Vikram Dharodi , Atul Kumar , Abhijit Sen

If reheating of the Universe takes place via Planck-suppressed decay, it seems that the thermalization of produced particles might be delayed, since they have large energy/small number densities and number violating large angle scatterings…

High Energy Physics - Phenomenology · Physics 2014-05-21 Keisuke Harigaya , Kyohei Mukaida

We present a novel mechanism in which plasma electrons and ions optically acquire angular momentum during local pump depletion of an azimuthally polarized laser, despite the laser carrying none. Using theoretical considerations and…

Plasma Physics · Physics 2026-03-04 Camilla Willim , Thales Silva , Luís Oliveira Silva , Jorge Vieira

In tokamak disruptions where the magnetic connection length becomes comparable to or even shorter than the plasma mean-free-path, parallel transport can dominate the energy loss and the thermal quench of the core plasma goes through four…

Plasma Physics · Physics 2023-05-24 Jun Li , Yanzeng Zhang , Xian-Zhu Tang

We study the rotational and vibrational heating of diatomic molecules placed near a surface at finite temperature on the basis of macroscopic quantum electrodynamics. The internal molecular evolution is governed by transition rates that…

Quantum Physics · Physics 2009-12-14 Stefan Yoshi Buhmann , M. R. Tarbutt , Stefan Scheel , E. A. Hinds

Thermal instability in an electron-ion magnetized plasma, which is relevant in the intragalactic medium (IGM) of galaxy clusters, solar corona, and other two-component plasma objects is investigated. We apply the multicomponent plasma…

Astrophysics of Galaxies · Physics 2015-05-28 Anatoly K. Nekrasov

We theoretically study the thermal relaxation of many-body systems under the action of oscillating external fields. When the magnitude or the orientation of a field is modulated around values where the pairwise heat-exchange conductances…

Mesoscale and Nanoscale Physics · Physics 2021-03-31 Riccardo Messina , Annika Ott , Christoph Kathmann , Svend-Age Biehs , Philippe Ben-Abdallah

Cycling of a metallic glass between ambient and cryogenic temperatures can induce higher-energy states characteristic of glass formation on faster cooling. This rejuvenation, unexpected because it occurs at small macroscopic strains and…

Disordered Systems and Neural Networks · Physics 2022-09-22 Baoshuang Shang , Weihua Wang , Alan Lindsay Greer , Pengfei Guan

Heating a solid with laser-accelerated fast electrons is unique way for a laboratory experiment to generate a plane powerful shock wave with a pressure of several hundred or even thousands of Mbar. Behind the front of such a powerful shock…

Plasma Physics · Physics 2021-02-16 S. Yu. Gus'kov , P. A. Kuchugov , G. A. Vergunova

In a dense plasma environment, the energy levels of an ion shift relative to the isolated ion values. This shift is reflected in the optical spectrum of the plasma and can be measured in, for example, emission experiments. In this work, we…

Plasma Physics · Physics 2024-09-11 T. Q. Thelen , D. A. Rehn , C. J. Fontes , C. E. Starrett

Ultracold neutral plasmas, formed by photoionizing laser-cooled atoms near the ionization threshold, have electron temperatures in the 1-1000 kelvin range and ion temperatures from tens of millikelvin to a few kelvin. They represent a new…

Atomic Physics · Physics 2009-11-13 T. C. Killian , T. Pattard , T. Pohl , J. M. Rost

In a plasma of multiple ion species, thermodynamic forces such as pressure and temperature gradients can drive ion species separation via inter-species diffusion. Unlike its neutral mix counterpart, plasma thermo-diffusion is found…

Plasma Physics · Physics 2014-05-07 Grigory Kagan , Xian-Zhu Tang

The interaction of two laser pulses in an underdense plasma has proven to be able to inject electrons in plasma waves, thus providing a stable and tunable source of electrons. Whereas previous works focused on the "beatwave" injection…

Plasma Physics · Physics 2009-02-12 C. Rechatin , J. Faure , A. Lifschitz , X. Davoine , E. Lefebvre , V. Malka

A new interaction, plasma redshift, is derived, which is important only when photons penetrate a hot, sparse electron plasma. The derivation of plasma redshift is based entirely on conventional axioms of physics. When photons penetrate a…

Astrophysics · Physics 2009-09-29 Ari Brynjolfsson

The recently proposed effective potential theory [Phys. Rev. Lett. 110, 235001 (2013)] is used to investigate the influence of coupling on inter-ion-species diffusion and momentum exchange in multi-component plasmas. Thermo-diffusion and…

Plasma Physics · Physics 2017-07-10 Grigory Kagan , Scott D. Baalrud , Jerome Daligault

The cooling of boiling water all the way down to freezing, by thermally connecting it to a thermal bath held at ambient temperature without external intervention, would be quite unexpected. We describe the equivalent of a 'thermal…

Statistical Mechanics · Physics 2019-04-22 Andreas Schilling , Xiaofu Zhang , Olaf Bossen