Physical Review E (Plasma physics)

Author(s): Swati Swagatika Mishra, Sudeep Bhattacharjee, and Pascal Brault

Atmospheric pressure helium plasmas are investigated through molecular dynamics simulations at room temperature (300 K) for various ionization fractions (χi=10−1−10−5) in the strongly coupled regime (ion coupling parameter, Γi∼1−10) employing Coulomb and Yukawa interaction potentials. The role of el…

[Phys. Rev. E 111, 015208] Published Wed Jan 22, 2025

Author(s): B. Clavier, D. Zarzoso, D. del-Castillo-Negrete, and E. Frénod

Generative artificial intelligence methods are employed for the first time to construct a surrogate model for plasma turbulence that enables long-time transport simulations. The proposed GAIT (Generative Artificial Intelligence Turbulence) model is based on the coupling of a convolutional variationa…

[Phys. Rev. E 111, L013202] Published Wed Jan 22, 2025

Author(s): Shipra Verma and Kannabiran Seshasayanan

We study the effects of conductivity variation on the Ponomarenko dynamo. Taking monotonically increasing, decreasing and sinusoidally varying radial profiles, we study the kinematic dynamo problem. The threshold of the dynamo, given by the critical magnetic Reynolds number Rmc, is found to strongly…

[Phys. Rev. E 111, 015207] Published Tue Jan 21, 2025

Author(s): Augustin Blanchet, François Soubiran, Marc Torrent, and Jean Clérouin

We computed the equation of state of iron using extended first-principles molecular dynamics simulations, ranging from 7.874g/cm3 and 5500 K up to 47.2g/cm3 and 109K. We compared the principal Hugoniot curve with semiempirical models, average atom-based model predictions, and shock experiment result…

[Phys. Rev. E 111, 015206] Published Thu Jan 16, 2025

Author(s): A. Curcio, M. L. Berlanga, N. Boudjema, E. Chiadroni, A. Cianchi, A. Del Dotto, D. Francescone, M. Galletti, V. Horny, A. Huerta, A. Mostacci, J. A. Pérez-Hernández, M. Petrarca, I. Rodriguez, C. Salgado-López, F. Stocchi, P. Tomassini, I. Vladisavlevici, M. D. Frias, M. Ferrario, and G. Gatti

The duration of incoherent XUV pulses down to the femtoseconds (fs) can be retrieved through a statistical analysis of the modulations on the observed radiation spectrum. Uncorrelated shot-noise fluctuations in the pulse temporal profile result in incoherent radiation showing a multispike spectrum w…

[Phys. Rev. E 111, L013201] Published Wed Jan 15, 2025

Author(s): M. W. C. Dharma-wardana, Dennis D. Klug, Hannah Poole, and G. Gregori

Recent cutting-edge experiments have provided in situ structure characterization and measurements of the pressure (P), density (ρ¯), and temperature (T) of shock compressed silicon in the 100 GPa range of pressures and up to ∼10000K. We present first-principles calculations in this P,T,ρ¯ regime to …

[Phys. Rev. E 111, 015205] Published Tue Jan 14, 2025

Author(s): Daniel Plummer, Pontus Svensson, Dirk O. Gericke, Patrick Hollebon, Sam M. Vinko, and Gianluca Gregori

By performing an ensemble of molecular dynamics simulations, the model-dependent ionization state is computed for strongly interacting systems self-consistently. This is accomplished through a free energy minimization framework based on the technique of thermodynamic integration. To illustrate the m…

[Phys. Rev. E 111, 015204] Published Mon Jan 13, 2025

Author(s): Vladimir I. Kolobov and Robert R. Arslanbekov

A hybrid kinetic-fluid model is used to study plasma stratification in alternating current (ac) discharges in noble gases at low plasma densities. Self-consistent coupled solutions of a nonlocal kinetic equation for electrons, a drift-diffusion equation of ions, and a Poisson equation for the electr…

[Phys. Rev. E 111, 015203] Published Fri Jan 10, 2025

Author(s): Jarett LeVan and Scott D. Baalrud

The intrinsic bulk viscosity of the one-component plasma (OCP) is computed and analyzed using equilibrium molecular dynamics simulations and the Green-Kubo formalism. It is found that bulk viscosity exhibits a maximum at Γ≈1, corresponding to the condition that the average kinetic energy of particle…

[Phys. Rev. E 111, 015202] Published Tue Jan 07, 2025

Author(s): M. J. May, G. E. Kemp, J. D. Colvin, R. Benjamin, D. Liedahl, T. Fears, S. Kucheyev, P. L. Poole, K. Widmann, and B. E. Blue

Shooting a laser pulse at a porous silver target generates more intense x rays than previous targets, which will help studies of matter in extreme conditions.

[Phys. Rev. E 111, 015201] Published Fri Jan 03, 2025

Author(s): Takayoshi Sano, Shogo Isayama, Kenta Takahashi, and Shuichi Matsukiyo

The interaction between a thin foil target and a circularly polarized laser light injected along an external magnetic field is investigated numerically by particle-in-cell simulations. A standing wave appears at the front surface of the target, overlapping the injected and partially reflected waves.…

[Phys. Rev. E 110, 065212] Published Mon Dec 30, 2024

Author(s): Trishul Dhalia, Rohit Juneja, and Amita Das

There has been of significant interest lately in the study of electromagnetic (EM) waves interacting with magnetized plasmas. The variety of resonances and the existence of several pass and stop bands in the dispersion curve for different orientations of the magnetic field offer new mechanisms of EM…

[Phys. Rev. E 110, 065213] Published Mon Dec 30, 2024

Author(s): Heng Zhang, Zhi-Lin Zhu, Malcolm-Wray Dunlop, Wen-Shan Duan, and Qing-He Zhang

Rogue waves, presented in numerous fields of science, are attracting significant attention. We study the excitation of electromagnetic rogue waves in magnetized plasmas caused by the thermal electron anisotropic loss cone distribution. The Krylov-Bogoliubov-Mitropolsky method is used to derive the n…

[Phys. Rev. E 110, 065214] Published Mon Dec 30, 2024

Author(s): Kenan Qu and Nathaniel J. Fisch

This study addresses the question: how bright can one make a beam with nontrivial quantum correlations such as entanglement or squeezing? The authors consider a nonlinear mechanism in plasmas, namely four wave mixing to make polarization-entangled photon pairs. The discovery of stable high intensity “quantum light” in plasmas opens the door to remarkable applications, including enhanced x-ray imaging, quantum (sub-Rayleigh) lithography, and greatly improved quantum communication.

[Phys. Rev. E 110, 065211] Published Fri Dec 20, 2024

Author(s): E. A. Sorokina and V. I. Ilgisonis

The fundamental theoretical problem of the existence of plasma equilibrium in a nonsymmetric magnetic field with nested magnetic surfaces is resolved. The lack of examples of smooth solutions to the equilibrium equations with no symmetry of the configuration has for many years served as the argument…

[Phys. Rev. E 110, 065209] Published Tue Dec 17, 2024

Author(s): Felipe Veloso, Vicente Rosales, Mario Favre, and Julio Valenzuela

We have experimentally studied the formation of shock waves in a laser-induced annular configuration. By locating an aluminum target in the focal plane of a 109W/cm2 laser, an annular plasma is formed that acts as a piston for a shock wave in a background gas composed by either argon or nitrogen. Ac…

[Phys. Rev. E 110, 065210] Published Tue Dec 17, 2024

Author(s): David R. Blackman, Vladimir Tikhonchuk, Ondrej Klimo, and Stefan Weber

Broadband lasers have been suggested as a useful tool to suppress laser-plasma instabilities. However, this study shows that in the kinetic inflation regime broadband lasers are ineffective in suppressing backward stimulated Raman scattering (SRS). The role of electron trapping is pivotal in the persistence of SRS despite the increased laser bandwidth.

[Phys. Rev. E 110, 065207] Published Mon Dec 16, 2024

Author(s): M. Pouyez, A. A. Mironov, T. Grismayer, A. Mercuri-Baron, F. Perez, M. Vranic, C. Riconda, and M. Grech

Electromagnetic showers developing from the collision of an ultraintense laser pulse with a beam of high-energy electrons or photons are investigated under conditions relevant to future experiments on multipetawatt laser facilities. A semianalytical model is derived that predicts the shower multipli…

[Phys. Rev. E 110, 065208] Published Mon Dec 16, 2024

Author(s): J. W. Li, J. Yan, C. S. Wu, Z. S. Dai, L. F. Wang, J. Qi, B. L. Chen, X. Zhang, G. Li, L. F. Jing, Z. J. Chen, W. Jiang, W. L. Shang, S. Y. Tu, Y. S. Liu, J. Zhang, J. M. Yang, W. H. Ye, W. D. Zheng, M. Wang, W. B. Pei, S. P. Zhu, and X. T. He

In traditional indirect-drive double-shell inertial confinement fusion, high-energy x-ray preheat has always been identified as a major source of degrading implosion performance. However, a significant increase of the neutron yield is observed in ignition-like double-shell implosion experiments perf…

[Phys. Rev. E 110, L063201] Published Fri Dec 13, 2024

Author(s): Yao Zhao, Anle Lei, Ning Kang, Fujian Li, Xiaofeng Li, Huiya Liu, Zhuwen Lin, Hongwei Yin, Yilin Xu, Yaozhi Yi, and Zhengxi Xu

A theoretical model of stimulated Brillouin scattering (SBS) developed by a broadband laser in inhomogeneous plasmas is proposed and further investigated through a series of numerical simulations using the low-coherence laser model of the Kunwu facility. Polychromatic beamlets are coupled to develop…

[Phys. Rev. E 110, 065206] Published Thu Dec 12, 2024