Plasma Physics Papers of the Week

Using in situ orientation-resolved single-crystal X-ray diffraction, we observe discrete Bragg spots whose spacings and angular relationships are reproduced by a common orientation matrix within each indexed BC8 reflection group, providing constraints beyond powder peak matching.

We present, to our knowledge, the first learned surrogates of three-dimensional resistive MHD turbulence, and compare three standard backbones in that role: a convolutional UNet, a shifted-window transformer and a Fourier neural operator.

Abstract Electron scattering offers a promising approach for directly characterizing the focal parameters of ultrashort high-intensity laser pulses.

In this article, we implement a new laser envelope solver that uses finite-difference (FD) method in the QSA code QuickPIC.

We introduce Simjecture, an open-source framework in which language-model agents pursue human-defined physical conjectures.

In this paper, a two‐electrode surface flashover ion source was fabricated by deposition of titanium film on a ceramic substrate by magnetron sputtering. The evolution of luminescence image, temperature distribution and erosion characteristics of this ion source during discharge were analyzed by using a high‐speed camera, a multispectral temperature measurement method and a microscope.

In this paper, we study the dynamical behaviour and exact travelling wave solutions of a non-standard nonlinear Schrödinger equation.

We construct a divergence-free velocity field $\mathbf{u}(\mathbf{x},t)$ on $\mathbb{T}^{n}$ that is a genuine function of position and carries both defining properties of turbulent transport: Richardson pair dispersion and a dissipative anomaly.

Consequently, the relative phases among the eigenstate components of the wave packet evolve nonuniformly, resulting in wave-packet spreading and deformation, accompanied by modified intrinsic orbital angular momentum dynamics. We introduce a dimensionless parameter to quantify this relativistic dephasing, providing an approximate criterion for selecting physical parameters and evolution times to mitigate the resulting wave-packet distortion.

An extended KDG model shows that the impurity-induced increase in bulk ion collisionality can drive a transition across banana regime, nonlinearly modifying the parallel viscosity and producing a radial electric field excursion of approximately -10 kV/m, consistent with experiment.

This work investigates an active-region sub-A-class microflare detected by the Solar X-ray Monitor on board Chandrayaan-2.

The analysis focuses on an experimentally observed n = 3 TAE in an ion-cyclotron-resonance-heated discharge.

We investigate the radial evolution of solar wind turbulence using remote-sensing brightness observations from the Solar Terrestrial Relations Observatory (STEREO) and the first science-ready images from the Polarimeter to Unify the Corona and Heliosphere (PUNCH) mission.

Plasma mirrors (PM) enhance the temporal contrast of high-power lasers, but declining reflectivity at subrelativistic intensities limits their energy throughput. Here we show that prepulse-generated preplasma drives this decline in p polarization primarily through absorption.

Here, we propose a slit plasma wakefield acceleration (SPWA) scheme, in which a relativistic electron beam propagating through a slit channel formed by two parallel plasma slabs excites crossing plasma-electron filamentary structures within the slit, generating intense wakefields tailored to simultaneously provide longitudinal acceleration and transverse focusing for a trailing positron bunch.

We test whether, in a finite-volume code, $\mathrm{Pm}$ can be varied through the reconstruction scheme by applying different methods to the hydro and magnetic variables.

To resolve the high-frequency evolution, we present time-resolved current measurements on key experimental components—specifically the outer electrode and the top flange—complemented by a newly developed fast current probe array installed at the top flange to capture multi-mode azimuthal structures.

We propose an instantaneous control framework for the stabilization of kinetic plasma instabilities using external fields.

We introduce AMPERe, a quadrature-by-expansion (QBX) evaluator for vector magnetostatic kernels on general three-dimensional, non-axisymmetric tokamak and stellarator geometries.