Physical Review E (Plasma physics)

Author(s): Alexander Andrievsky, Roman Chertovskih, and Vladislav Zheligovsky

Pointwise zero velocity helicity density is shown not to prevent steady flows from acting as kinematic dynamos. We present numerical evidences that such flows can generate both small-scale magnetic fields as well as, by the magnetic α-effect or negative eddy diffusivity mechanisms, large-scale ones....

[Phys. Rev. E 99, 033204] Published Thu Mar 14, 2019

Author(s): E. S. Efimenko, A. V. Bashinov, A. A. Gonoskov, S. I. Bastrakov, A. A. Muraviev, I. B. Meyerov, A. V. Kim, and A. M. Sergeev

The cascaded production and dynamics of electron-positron plasma in ultimately focused laser fields of extreme intensity are studied by three-dimensional particle-in-cell simulations with the account of the relevant processes of quantum electrodynamics (QED). We show that, if the laser facility prov...

[Phys. Rev. E 99, 031201(R)] Published Wed Mar 13, 2019

Author(s): P. Michel, M. J. Rosenberg, W. Seka, A. A. Solodov, R. W. Short, T. Chapman, C. Goyon, N. Lemos, M. Hohenberger, J. D. Moody, S. P. Regan, and J. F. Myatt

Raman side scatter, whereby scattered light is resonant while propagating perpendicularly to a density gradient in a plasma, was identified experimentally in planar-target experiments at the National Ignition Facility at intensities orders of magnitudes below the threshold for absolute instability. ...

[Phys. Rev. E 99, 033203] Published Wed Mar 13, 2019

Author(s): Marco Antonio Ridenti, Jayr de Amorim, and Arnaldo Dal Pino

We present a model that describes the departure from equilibrium of the OH(A) rotational level distribution in collisional plasmas. In this model, the OH(A) rotational state densities are governed by a rate equation including: (i) a balanced rotational energy transfer process with the buffer gas spe...

[Phys. Rev. E 99, 033202] Published Thu Mar 07, 2019

Author(s): Gerd Röpke, David Blaschke, Tilo Döppner, Chengliang Lin, Wolf-Dietrich Kraeft, Ronald Redmer, and Heidi Reinholz

New facilities explore warm dense matter (WDM) at conditions with extreme densities (exceeding ten times condensed matter densities) so that electrons are degenerate even at temperatures of 10–100 eV. Whereas in the nondegenerate region correlation effects such as Debye screening are relevant for th...

[Phys. Rev. E 99, 033201] Published Mon Mar 04, 2019

Author(s): A. R. Christopherson, R. Betti, and J. D. Lindl

Separating ignition of the central hot spot from propagating burn in the surrounding dense fuel is crucial to conclusively assess the achievement of ignition in inertial confinement fusion (ICF). We show that the transition from hot spot ignition to the onset of propagating burn occurs when the alph...

[Phys. Rev. E 99, 021201(R)] Published Mon Feb 25, 2019

Author(s): Qingjiang Pan and Darin R. Ernst

A gyrokinetic linearized exact (not model) Landau collision operator is derived by transforming the symmetric and conservative Landau form. The formulation obtains the velocity-space flux density and preserves the operator's conservative form as the divergence of this flux density. The operator cont...

[Phys. Rev. E 99, 023201] Published Fri Feb 08, 2019

Author(s): E. Bello-Benítez, G. Sánchez-Arriaga, T. Passot, D. Laveder, and E. Siminos

Nonlinear and low-frequency solitary waves are investigated in the framework of the one-dimensional Hall-magnetohydrodynamic model with finite Larmor effects and two different closure models for the pressures. For a double adiabatic pressure model, the organization of these localized structures in t...

[Phys. Rev. E 99, 023202] Published Fri Feb 08, 2019

Author(s): S. Kawata, C. Deutsch, and Y. J. Gu

Peculiar behavior is found in a Si cluster ion, moving with a speed of ∼0.22c (c: speed of light) in a solid Al plasma in the context of cluster-ion beam driven inertial confinement fusion: The Si ion, moving closely behind the forward-moving Si ion for a distance of several Å in the cluster, feels ...

[Phys. Rev. E 99, 011201(R)] Published Thu Jan 31, 2019

Author(s): I. I. Lisina, О. S. Vaulina, and Е. А. Lisin

The conditions for the amplitude instability onset in a two-dimensional Yukawa cluster system consisting of seven particles are investigated for the case of sufficiently large thermal particle displacements. We consider here an analytical approach to derive the criterion for such instability onset, ...

[Phys. Rev. E 99, 013207] Published Wed Jan 30, 2019

Author(s): A. I. Momot, A. G. Zagorodny, and O. V. Momot

The kinetic theory of electric fluctuations in a collisional weakly ionized dusty plasma is formulated with due regard to the grain charging dynamics. The correlation functions of electron and ion density are obtained by considering their collisions with neutrals described within the Bhatnagar-Gross...

[Phys. Rev. E 99, 013206] Published Tue Jan 22, 2019

Author(s): Murchana Khusroo and Madhurjya P. Bora

We present an analysis of a Hall-magnetohydrodynamics model of the magnetospheric plasma with finite Larmor radius effect. Through a bifurcation analysis of the resultant nonlinear system, we show that this nonlinear model does not possess a limit cycle, which rules out regular periodic oscillations...

[Phys. Rev. E 99, 013205] Published Thu Jan 17, 2019

Author(s): Teruki Naito, Tai Tanaka, Yuichiro Fukuma, and Osamu Sakai

Cloaking and scattering cancellation of electromagnetic waves have attracted much attention since they allow control of rf and light waves and are of scientific interest. The analytical results demonstrated in this paper reveal that plasmonic cloaking, which is one of the schemes for scattering canc...

[Phys. Rev. E 99, 013204] Published Wed Jan 16, 2019

Author(s): P. Hartmann, J. C. Reyes, E. G. Kostadinova, L. S. Matthews, T. W. Hyde, R. U. Masheyeva, K. N. Dzhumagulova, T. S. Ramazanov, T. Ott, H. Kählert, M. Bonitz, I. Korolov, and Z. Donkó

The self-diffusion phenomenon in a two-dimensional dusty plasma at extremely strong (effective) magnetic fields is studied experimentally and by means of molecular dynamics simulations. In the experiment the high magnetic field is introduced by rotating the particle cloud and observing the particle ...

[Phys. Rev. E 99, 013203] Published Thu Jan 10, 2019

Author(s): Zs. Lécz and A. Andreev

The subatomic experimental exploration of physical processes on extremely short time scales has become possible by the generation of high-quality electron bunches and x-ray pulses with subfemtosecond durations. Increasing the photon energy from the x-ray to gamma-ray regime makes probing of extremel...

[Phys. Rev. E 99, 013202] Published Wed Jan 09, 2019

Author(s): E. Saberian

In their Comment, Rehman and Ahmad have noted that the damping rate of Langmuir oscillations in a q-nonextensive electron-positron plasma is always negative and so resulting only in Landau damped oscillations and no unstable modes. As a Reply, I would like to resolve the origin of the misleading res...

[Phys. Rev. E 99, 017202] Published Fri Jan 04, 2019

Author(s): Aman-ur-Rehman and Mushtaq Ahmad

Saberian and Esfandyari-Kalejahi [Phys. Rev. E 87, 053112 (2013)] have discussed Langmuir oscillations in a q-nonextensive electron-positron plasma. However, some of the results obtained and the conclusions drawn in this paper are not appropriate. In Fig. 3 of the above mentioned paper, the authors ...

[Phys. Rev. E 99, 017201] Published Wed Jan 02, 2019

Author(s): A. M. Saunders, B. Lahmann, G. Sutcliffe, J. A. Frenje, R. W. Falcone, and T. Döppner

This paper presents results of x-ray Thomson scattering on a plasma in the warm dense matter regime. The experiment generates a uniform sample with a long duration in time, which represents an advance in experimental studies of this regime. The analysis also reveals shortcomings in previous theoretical approaches and shows that this experimental technique is suitable for measuring the relevant plasma conditions.

[Phys. Rev. E 98, 063206] Published Wed Dec 26, 2018

Author(s): A. Kozhberov

We study electrostatic and phonon properties of Yukawa crystals. It is shown that in the harmonic approximation these systems which are used in the theory of dusty plasma can be described analytically by the model from the theory of neutron stars and white dwarfs. Using this approximation, we consid...

[Phys. Rev. E 98, 063205] Published Fri Dec 14, 2018

Author(s): A. H. Woldegeorgis, B. Beleites, F. Ronneberger, R. Grosse, and A. Gopal

The interaction of a high-power laser pulse with a thin foil can generate energetic, broadband terahertz radiation. Here, we report an experimental investigation on the influence of incident laser polarization and wavelength on the terahertz emission and maximum proton energy from the target rear su...

[Phys. Rev. E 98, 061201(R)] Published Tue Dec 11, 2018