Physical Review E (Plasma physics)

Author(s): Erwin Walter, John P. Farmer, Martin S. Weidl, Alexander Pukhov, and Frank Jenko

Charged and quasineutral beams propagating through an unmagnetized plasma are subject to numerous collisionless instabilities on the small scale of the plasma skin depth. The electrostatic two-stream instability, driven by longitudinal and transverse wakefields, dominates for dilute beams. This lead…

[Phys. Rev. E 110, 035208] Published Thu Sep 19, 2024

Author(s): F. X. Bronold and F. Willert

Employing the invariant embedding principle for the electron backscattering function, we present a scheme for constructing an electron surface scattering kernel to be used in the boundary condition for the electron Boltzmann equation of a plasma facing a semiconducting solid. The scheme takes the so…

[Phys. Rev. E 110, 035207] Published Wed Sep 18, 2024

Author(s): G. J. Li and S. Davidovits

Ablator materials used for inertial confinement fusion, such as high-density carbon (HDC) and beryllium, have grain structure which may lead to small-scale density nonuniformity and the generation of perturbations when the materials are shocked and compressed. Here, we use a combination of a linear …

[Phys. Rev. E 110, 035206] Published Mon Sep 16, 2024

Author(s): C. A. McAnespie, P. Chaudhary, L. Calvin, M. J. V. Streeter, G. Nersysian, S. J. McMahon, K. M. Prise, and G. Sarri

We report on the first systematic characterization of a tuneable laser-driven electron source capable of delivering Gy-scale doses in a duration of 10–20 ps in a single irradiation, thus reaching unprecedented dose rates in the range of 1010–1012 Gy/s. Detailed characterization of the source indicat…

[Phys. Rev. E 110, 035204] Published Thu Sep 12, 2024

Author(s): H. Martin, R. W. Paddock, M. W. von der Leyen, V. Eliseev, R. T. Ruskov, R. Timmis, J. J. Lee, A. James, and P. A. Norreys

Dense, hot plasmas are susceptible to the electrothermal instability: a collisional process which permits temperature perturbations in electron currents to grow. It is shown here that linearizing a system comprised of two opposing currents and a mobile ion background as three distinct fluids yields …

[Phys. Rev. E 110, 035205] Published Thu Sep 12, 2024

Author(s): Andrey V. Zobnin, Andrey M. Lipaev, Roman A. Syrovatka, Alexandr D. Usachev, Vadim N. Naumkin, Oleg F. Petrov, Markus H. Thoma, Oleg V. Novitsky, and Sergey N. Ryzhikov

Fragmentation of a suspension of micron-sized plastic microparticles and their contraction into dense globules was experimentally obtained in a gas discharge plasma, when the plasma density was deliberately and abruptly increased. The globules took up spherical shapes 0.14–1.1 mm in diameters and co…

[Phys. Rev. E 110, 035203] Published Mon Sep 09, 2024

Author(s): V. Horný, P. G. Bleotu, D. Ursescu, V. Malka, and P. Tomassini

With the usage of the postcompression technique, few-cycle joule-class laser pulses are nowadays available extending the state of the art of 100 TW-class laser working at 10 Hz repetition. In this Letter, we explore the potential of wakefield acceleration when driven with such pulses. The numerical …

[Phys. Rev. E 110, 035202] Published Fri Sep 06, 2024

Author(s): S. Bolaños, M. J.-E. Manuel, M. Bailly-Grandvaux, A. S. Bogale, D. Caprioli, S. R. Klein, D. Michta, P. Tzeferacos, and F. N. Beg

We present an experimental investigation of the formation stage of a collisionless shock when the flow velocity is aligned with an ambient magnetic field utilizing laser-driven, super-Alfvénic plasma flows. As the flows interact, electromagnetic streaming instabilities develop. Proton deflectometry …

[Phys. Rev. E 110, L033201] Published Thu Sep 05, 2024

Author(s): R. Jorge, W. Dorland, P. Kim, M. Landreman, N. R. Mandell, G. Merlo, and T. Qian

Turbulent transport is regarded as one of the key issues in magnetic confinement nuclear fusion, both for tokamaks and stellarators. In this work, we show that a significant decrease in a microstability-based proxy, as opposed to a geometric one, for the turbulent heat flux, namely the quasilinear h…

[Phys. Rev. E 110, 035201] Published Tue Sep 03, 2024

Author(s): Rune Højlund Marholt, Mads Givskov Senstius, and Stefan Kragh Nielsen

The Wentzel, Kramers, and Brillouin (WKB) approximation of geometrical optics is widely used in plasma physics, quantum mechanics, and reduced wave modeling, in general. However, it is well-known that the approximation breaks down at focal and turning points. In this paper, we present an unsupervise…

[Phys. Rev. E 110, 025208] Published Tue Aug 27, 2024

Author(s): Lucas Bourscheidt and Fernando Haas

The theory of gauge transformations in linearized gravitation is investigated. After a brief discussion of the fundamentals of the kinetic theory in curved spacetime, the Einstein-Vlasov-Maxwell (EVM) system of equations in terms of gauge-invariant quantities is established without neglecting the eq…

[Phys. Rev. E 110, 025207] Published Mon Aug 26, 2024

Author(s): Olga Shapoval, Edoardo Zoni, Remi Lehe, Maxence Thévenet, and Jean-Luc Vay

This paper introduces a formulation of the particle-in-cell (PIC) method for the modeling of relativistic plasmas, that leverages the ability of the pseudospectral analytical time-domain solver (PSATD) to handle arbitrary time dependencies of the charge and current densities during one PIC cycle (ap…

[Phys. Rev. E 110, 025206] Published Fri Aug 23, 2024

Author(s): Calvin Carmichael, Jorge Martinez Ortiz, Parker Adamson, Lorin Matthews, and Truell Hyde

Rotating quasipaired particles (torsions) are observed within a two-dimensional monolayer crystal suspended in an argon complex plasma for discharge powers of 1–10 W and pressures of 135–155 mTorr. The inclusion of a torsion in a crystal lattice fundamentally changes the overall lattice state to a “…

[Phys. Rev. E 110, 025205] Published Thu Aug 22, 2024

Author(s): Matthew Schlitters, Matthew Miller, Ben Farley, and Scott D. Bergeson

Bronin et al. [Phys. Rev. E 108, 045209 (2023)] recently reported molecular-dynamics simulations of ultracold neutral plasmas expanding in a quadrupole magnetic field. While the main results are in agreement with prior experimental measurements, we present data showing oscillations not captured in t…

[Phys. Rev. E 110, 027201] Published Wed Aug 21, 2024

Author(s): S. Ya. Bronin, E. V. Vikhrov, B. B. Zelener, and B. V. Zelener

In this Reply, we respond to the Comment by Schlitters et al. on our recent work [Phys. Rev. E 108, 045209 (2023)], where we present simulation results of ultracold Sr plasma expansion in a quadrupole magnetic field using a molecular-dynamics method. In the Comment, Schlitters et al. present their e…

[Phys. Rev. E 110, 027202] Published Wed Aug 21, 2024

Author(s): Matteo Stanzani, Filippo Arlotti, Guido Ciraolo, Xavier Garbet, and Cristel Chandre

We investigate the motion of charged particles in a turbulent electrostatic potential using guiding-center theory. By increasing the Larmor radius, the dynamics exhibit close-to-ballistic transport properties. The transition from diffusive to ballistic transport is analyzed using nonlinear dynamics.…

[Phys. Rev. E 110, 025204] Published Fri Aug 16, 2024

Author(s): Dariusz Wójcik and Wiesław M. Macek

We apply statistical analysis to search for processes responsible for turbulence in physical systems. In our previous studies, we have shown that solar wind turbulence in the inertial range of large magnetohydrodynamic scales exhibits Markov properties. We have recently extended this approach on muc…

[Phys. Rev. E 110, 025203] Published Mon Aug 12, 2024

Author(s): A. Deller, J. von der Linden, S. Nißl, K. Michishio, N. Oshima, H. Higaki, and E. V. Stenson

We demonstrate the efficient injection of a pulsed positron beam into a magnetic dipole trap and investigate the ensuing particle dynamics in the inhomogeneous electric and magnetic fields. Bunches of ∼105e+ were transferred from a buffer-gas trap into the field of a permanent magnet using a lossles…

[Phys. Rev. E 110, L023201] Published Fri Aug 09, 2024

Author(s): Zhengfeng Fan, Chengxin Yu, Cong-Zhang Gao, Xuefeng Xu, Cunbo Zhang, Binbing Wu, Jie Liu, Pei Wang, and Shaoping Zhu

Modeling the nonequilibrium process between ions and electrons is of great importance in laboratory fusion ignition, laser-plasma interaction, and astrophysics. For hot and dense plasmas, theoretical descriptions of Coulomb collisions remain complicated due to quantum effect at short distances and s…

[Phys. Rev. E 110, 025202] Published Tue Aug 06, 2024

Author(s): G. V. Vogman and J. H. Hammer

A complete quasilinear model is derived for the electrostatic acceleration-driven lower hybrid drift instability in a uniform two-species low-beta plasma in which current is perpendicular to the background magnetic field. The model consists of coupled nonlinear velocity space diffusion equations for…

[Phys. Rev. E 110, 025201] Published Fri Aug 02, 2024