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Using numerical simulations, we investigate the equilibrium dynamics of a single component fluid with Yukawa interaction potential. We show that, for a wide range of densities and temperatures, the dynamics of the system are in striking…

等离子体物理 · 物理学 2015-05-28 James P. Mithen , Jérôme Daligault , Basil J. B. Crowley , Gianluca Gregori

We analyze the Vlasov dispersion relation for Yukawa plasmas in three dimensions for the purpose of identifying coupling parameter domains where the Vlasov approach is justified and the existence of a well-developed RPA type collective…

等离子体物理 · 物理学 2018-06-25 Kenneth I. Golden , Gabor J. Kalman , Luciano G. Silvestri

In order to give a basis for the structure and correlation analysis of fine particle (dusty) plasma and colloidal suspensions, thermodynamic treatment of mixtures of macroscopic and microscopic charged particles within the adiabatic…

等离子体物理 · 物理学 2015-06-11 Hiroo Totsuji

We have analyzed the Vlasov dispersion relation for Yukawa plasmas in three and two dimensions primarily for the purpose of identifying coupling parameter domains where the existence of well-developed collective excitations is forbidden or…

等离子体物理 · 物理学 2012-04-30 Kenneth I. Golden , Gabor J. Kalman

Many particle physics models for dark matter self-interactions - motivated to address long-standing challenges to the collisionless cold dark matter paradigm - fall within the semi-classical regime, with interaction potentials that are…

高能物理 - 唯象学 · 物理学 2021-02-12 Brian Colquhoun , Saniya Heeba , Felix Kahlhoefer , Laura Sagunski , Sean Tulin

The glass transition is investigated in three dimensions for single and double Yukawa potentials for the full range of control parameters. For vanishing screening parameter, the limit of the one-component plasma is obtained; for large…

The mobility of a charged projectile in a strongly coupled dusty plasma is simulated. A net force $F$, opposed by a combination of collisional scattering and gas friction, causes projectiles to drift at a mobility-limited velocity $u_p$.…

等离子体物理 · 物理学 2015-06-18 Bin Liu , J. Goree

It was suggested in the literature that the self-diffusion coefficient of simple fluids can be approximated as a ratio of the squared thermal velocity of the atoms to the "fluid Einstein frequency," which can thus serve as a rough estimate…

软凝聚态物质 · 物理学 2018-04-10 Sergey Khrapak , Boris Klumov , Lenaic Couedel

Simple practical expressions are put forward, which allow to estimate thermodynamic properties of Yukawa fluids in a wide range of coupling, up to the fluid-solid phase transition. These expressions demonstrate excellent agreement with the…

等离子体物理 · 物理学 2015-02-27 Sergey Khrapak , Hubertus Thomas

An expression for the effective Coulomb logarithm in one-component-plasma is proposed, which allows to extend the applicability of the classical formula for the self-diffusion coefficient to the strongly coupled regime. The proposed…

等离子体物理 · 物理学 2013-06-18 Sergey A. Khrapak

Application of the ion sphere model (ISM), well known in the context of the one-component-plasma, to estimate thermodynamic properties of model Yukawa systems is discussed. It is shown that the ISM approximation provides fairly good…

等离子体物理 · 物理学 2015-02-16 S. A. Khrapak , A. G. Khrapak , A. V. Ivlev , H. M. Thomas

Very simple explicit analytical expressions are discussed, which are able to describe the dispersion relations of longitudinal waves in strongly coupled plasma systems such as one-component plasma and weakly screened Yukawa fluids with a…

等离子体物理 · 物理学 2017-12-29 Sergey Khrapak

The entropy of strongly coupled Yukawa fluids is discussed from several perspectives. First, it is demonstrated that a vibrational paradigm of atomic dynamics in dense fluids can be used to obtain a simple and accurate estimate of the…

软凝聚态物质 · 物理学 2024-09-18 Sergey Khrapak

We derive an effective coupling parameter for two-dimensional Yukawa systems based on the height of the first maximum of the pair distribution function. Two variants -- one valid in the high-coupling range, the other for arbitrary couplings…

等离子体物理 · 物理学 2011-06-21 T. Ott , M. Bonitz

The conventional fluid description of multi-component plasma, supplemented by an appropriate equation of state for the macroparticle component, is used to evaluate the longitudinal sound velocity of Yukawa fluids. The obtained results are…

等离子体物理 · 物理学 2015-03-24 Sergey Khrapak , Hubertus Thomas

One-dimensional and quasi-one-dimensional strongly-coupled dusty plasma rings have been created experimentally. Longitudinal (acoustic) and transverse (optical) dispersion relations for the 1-ring were measured and found to be in very good…

等离子体物理 · 物理学 2010-04-08 T. E. Sheridan , J. C. Gallagher

Weak magnetic field induced corrections for the Yukawa potential due to one pion exchange between two constituent quarks (nucleons) are presented. For that, the constant magnetic field effect on the pion propagator and on the pion form…

高能物理 - 唯象学 · 物理学 2024-08-16 Fabio L. Braghin , Marcelo Loewe , Cristian Villavicencio

A concise overview of the vibrational model of heat transfer in simple fluids with soft pairwise interactions is presented. The model is applied to evaluate the thermal conductivity coefficient of the strongly coupled Yukawa fluid, which…

等离子体物理 · 物理学 2023-03-20 Sergey Khrapak

In a laboratory, a two-dimensional complex (dusty) plasma consists of a low-density ionized gas containing a confined suspension of Yukawa-coupled plastic microspheres. For an initial crystal-like form, we report ideal gas behavior in this…

等离子体物理 · 物理学 2013-07-03 Neil P. Oxtoby , Elias J. Griffith , Céline Durniak , Jason F. Ralph , Dmitry Samsonov

Previously a compact formula for total reaction cross section for heavy-ion collisions as a function of energy was obtained by treating the angular momentum $l$ as a continuous variable. The accuracy of the continuum approximation is…

核理论 · 物理学 2012-12-11 Cheuk-Yin Wong
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