Physical Review E (Plasma physics)

Author(s): William Trickey, T. J. B. Collins, I. V. Igumenshchev, V. N. Goncharov, and A. Shvydky

The dynamic-shell concept for inertial confinement fusion (ICF) uses an initially homogeneous target and a carefully shaped laser pulse to form a shell and implode it. The laser pulse consists of a series of pickets that drive shocks into the target. The first few shocks converge inwards and rebound…

[Phys. Rev. E 111, 025210] Published Fri Feb 28, 2025

Author(s): Yichen Fu, Justin R. Angus, Hong Qin, and Vasily I. Geyko

Coulomb collision is a fundamental diffusion process in plasmas that can be described by the Landau-Fokker-Planck (LFP) equation or the stochastic differential equation (SDE). While energy and momentum are conserved exactly in the LFP equation, they are conserved only on average by the conventional …

[Phys. Rev. E 111, 025211] Published Fri Feb 28, 2025

Author(s): S. Werbowy, B. Pranszke, and L. Windholz

Studies of the static Stark effect are reported for the multiplets at 615.8, 645.6, 777.6, 822.4, 844.9, and 926.5 nm (vacuum wavelengths) of atomic oxygen, which are important for various applications. From the Stark patterns recorded at very high electric fields up to 780 kV/cm, we have determined…

[Phys. Rev. E 111, 025209] Published Thu Feb 27, 2025

Author(s): Yong Shen, J. Q. Dong, X. D. Peng, H. D. He, and J. X. Li

The magnetohydrodynamic (MHD) instability in the HL-2A tokamak has been comprehensively studied, including ideal MHD ballooning and kink modes, as well as the operational β limit imposed jointly by them. It shows an internal ballooning mode appearing in the plasma with parabolic pressure and current…

[Phys. Rev. E 111, 025208] Published Mon Feb 24, 2025

Author(s): B. Arnold, J. Daligault, D. Saumon, Antoine Bédard, and S. X. Hu

Nucleation in the supercooled Yukawa system is relevant for addressing current challenges in understanding a range of crystallizing systems including white dwarf (WD) stars. We use both brute force and seeded molecular dynamics simulations to study homogeneous nucleation of crystals from supercooled…

[Phys. Rev. E 111, 025206] Published Fri Feb 21, 2025

Author(s): C. Ruyer, P. Loiseau, D. Turnbull, and V. Tikhonchuk

The modeling of a spatially incoherent laser beam remains a central problem of the parametric instabilities in the context of inertial confinement fusion. This paper gives a simplified and comprehensive overview of the recent analytical developments regarding the modeling of these laser beams and a …

[Phys. Rev. E 111, 025207] Published Fri Feb 21, 2025

Author(s): Ian M. DesJardin, Christine M. Hartzell, and Jonathan Wrieden

Ion acoustic solitons can be generated by a charged object immersed in an electrostatic quasineutral two-temperature plasma flow. These are often described by the forced Korteweg–de Vries equation. Two-fluid simulations of this scenario are conducted and compared to numerical solutions of the forced…

[Phys. Rev. E 111, 025204] Published Wed Feb 19, 2025

Author(s): Hong Qin, Elijah J. Kolmes, Michael Updike, Nicholas Bohlsen, and Nathaniel J. Fisch

Phase space engineering by rf waves plays important roles in both thermal D-T fusion and nonthermal advanced fuel fusion, but not all phase space manipulation is allowed; certain fundamental limits exist. In addition to Liouville's theorem, which requires the manipulation to be volume preserving, Gr…

[Phys. Rev. E 111, 025205] Published Wed Feb 19, 2025

Author(s): M. Galletti, L. Crincoli, R. Pompili, L. Verra, F. Villa, R. Demitra, A. Biagioni, A. Zigler, and M. Ferrario

We describe the generation of plasma filaments for application in plasma-based particle accelerators. The complete characterization of a plasma filament generated by a low-energy self-guided femtosecond laser pulse is studied experimentally and theoretically in a low-pressure nitrogen gas environmen…

[Phys. Rev. E 111, 025202] Published Tue Feb 18, 2025

Author(s): Jihoon Kim, Roopendra Rajawat, Tianhong Wang, and Gennady Shvets

We demonstrate an ion acceleration scheme capable of simultaneously focusing and accelerating a multispecies ion beam with monoenergetic spectra to a few micron radius. The focal length and ion mean energy can be independently controlled: the former by using a different front-surface shape and the l…

[Phys. Rev. E 111, 025203] Published Tue Feb 18, 2025

Author(s): S. Iseni, G. B. Sretenović, V. V. Kovačević, N. Bonifaci, C. Pichard, C. Cachoncinlle, and A. Khacef

Gas discharge physics is particularly helpful to study many spectacular aspects of atmospheric electricity, e.g., lightning and sprite streamers. However, the observations of double-headed streamers (DHS) in nature—formed after the breakdown—remain an open question. Considering that the topic of DHS…

[Phys. Rev. E 111, L023202] Published Thu Feb 13, 2025

Author(s): J. Gonzalez and J. Sheil

Already some years ago, Langdon [Phys. Rev. Lett. 44, 575 (1980)] proposed that inverse bremsstrahlung absorption in plasmas drives free electrons into non-Maxwellian distributions. Radiation-hydrodynamic simulations of plasma-based light sources, however, often (implicitly) assume Maxwellian-distri…

[Phys. Rev. E 111, L023201] Published Thu Feb 06, 2025

Author(s): P. Hadjisolomou, T. M. Jeong, P. Valenta, A. J. Macleod, R. Shaisultanov, C. P. Ridgers, and S. V. Bulanov

The interaction of an ultra-intense laser with matter is an efficient source of high-energy particles, with efforts directed toward narrowing the divergence and simultaneously increasing the brightness. In this paper we report on emission of highly collimated, ultrabright, attosecond γ-photons and g…

[Phys. Rev. E 111, 025201] Published Mon Feb 03, 2025

Author(s): Jiaolong Zeng, Aihua Deng, Cheng Gao, Yong Hou, and Jianmin Yuan

Understanding the ionization balance of extremely dense plasmas still remains a scientific challenge for both theory and experiment, which is very important in many research fields such as the equation of state, radiative opacity, and thermal and electrical conductivities. In a most recent experimen…

[Phys. Rev. E 111, 015211] Published Thu Jan 30, 2025

Author(s): Cheng Gao, Yongjun Li, Yong Hou, Fengtao Jin, Jiaolong Zeng, and Jianmin Yuan

In hot dense plasmas, orbital delocalization and relocalization considerably influence the ionization balance, equation of state and radiative properties of matter. A self-consistent plasma screening potential is applied in atomic structure calculations for solid-density Mg plasmas, generated by an …

[Phys. Rev. E 111, 015212] Published Thu Jan 30, 2025

Author(s): Pauline A. Simon, Fouad Sahraoui, Sébastien Galtier, Dimitri Laveder, Thierry Passot, and Pierre-Louis Sulem

The impact of ion pressure anisotropy on the energy cascade rate of Hall-MHD turbulence with biadiabatic ions and isothermal electrons is evaluated in three-dimensional direct numerical simulations, using the exact (or third-order) law derived by Simon and Sahraoui in 2022. It is shown that pressure…

[Phys. Rev. E 111, 015210] Published Wed Jan 29, 2025

Author(s): Andrey M. Lipaev, Vadim N. Naumkin, Sergey A. Khrapak, Alexandr D. Usachev, Oleg F. Petrov, Markus H. Thoma, Michael Kretschmer, Cheng-Ran Du, Oleg D. Kononenko, and Andrey V. Zobnin

An analysis of lattice wave spectra in a three-dimensional dusty plasma structure formed in a direct current gas discharge with alternating polarity under microgravity conditions is reported. The spectra are determined using the Fourier transform of microparticle velocities, measured by tracking mic…

[Phys. Rev. E 111, 015209] Published Mon Jan 27, 2025

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