Publications (24)
Retrieving fields from proton radiography without source profiles
M. F. Kasim, A. F. A. Bott, P. Tzeferacos +3
Proton radiography is a technique in high energy density science to diagnose magnetic and/or electric fields in a plasma by firing a proton beam and detecting its modulated intensi…
High-order conservative finite difference GLM-MHD schemes for cell-centered MHD
A. Mignone, P. Tzeferacos, G. Bodo
We present and compare third- as well as fifth-order accurate finite difference schemes for the numerical solution of the compressible ideal MHD equations in multiple spatial dimen…
Data-driven modeling of shock physics by physics-informed MeshGraphNets
S. Zhang, M. Mallon, M. Luo +4
High-resolution fluid simulations for plasma physics and astrophysics rely on Particle in cell (PIC) and hydrodynamic solvers (e.g., FLASH) to resolve shock dominated, multiscale p…
Experimental demonstration of an inertial collimation mechanism in nested outflows
R. Yurchak, A. Ravasio, A. Pelka +10
Interaction between a central outflow and a surrounding wind is common in astrophysical sources powered by accretion. Understanding how the interaction might help to collimate the…
Time-resolved fast turbulent dynamo in a laser plasma
A. F. A. Bott, P. Tzeferacos, L. Chen +25
Understanding magnetic-field generation and amplification in turbulent plasma is essential to account for observations of magnetic fields in the universe. A theoretical framework a…
Shock Wave Formation in Radiative Plasmas
F. Garcia-Rubio, V. Tranchant, E. C. Hansen +6
The temporal evolution of weak shocks in radiative media is theoretically investigated in this work. The structure of radiative shocks has traditionally been studied in a stationar…
Testing strong-field QED with the avalanche precursor
A. A. Mironov, S. S. Bulanov, A. Di Piazza +8
A two-beam high-power laser facility is essential for the study of one of the most captivating phenomena predicted by strong-field quantum electrodynamics (QED) and yet unobserved…
Insensitivity of a turbulent laser-plasma dynamo to initial conditions
A. F. A. Bott, L. Chen, P. Tzeferacos +18
It has recently been demonstrated experimentally that a turbulent plasma created by the collision of two inhomogeneous, asymmetric, weakly magnetised laser-produced plasma jets can…
A Second-Order Unsplit Godunov Scheme for Cell-Centered MHD: the CTU-GLM scheme
A. Mignone, P. Tzeferacos
We assess the validity of a single step Godunov scheme for the solution of the magneto-hydrodynamics equations in more than one dimension. The scheme is second-order accurate and t…
Mega-Gauss Plasma Jet Creation Using a Ring of Laser Beams
L. Gao, E. Liang, Y. Lu +11
Using 20 OMEGA laser beams at the Laboratory for Laser Energetics, University of Rochester, to irradiate a flat plastic target in a hollow ring configuration, we created supersonic…
Design of experiments characterising heat conduction in magnetised, weakly collisional plasma
T. A. Vincent, P. Ariyathilaka, L. Creaser +15
Heat conduction in weakly collisional, magnetised plasma is challenging to model accurately due to multifaceted physics governing heat-carrying electrons, including microinstabilit…
Particle-in-cell simulations of expanding high energy density plasmas with laser ray tracing
K. V. Lezhnin, S. R. Totorica, A. S. Hyder +5
The design and analysis of high energy density (HED) laser experiments typically rely on radiation hydrodynamics simulations. However, some laser-plasma interaction regimes are not…
Proton imaging of stochastic magnetic fields
A. F. A. Bott, C. Graziani, P. Tzeferacos +4
Recent laser-plasma experiments report the existence of dynamically significant magnetic fields, whose statistical characterisation is essential for understanding the physical proc…
Numerical modeling of laser-driven experiments aiming to demonstrate magnetic field amplification via turbulent dynamo
P. Tzeferacos, A. Rigby, A. Bott +29
The universe is permeated by magnetic fields, with strengths ranging from a femtogauss in the voids between the filaments of galaxy clusters to several teragauss in black holes and…
Transport of high-energy charged particles through spatially-intermittent turbulent magnetic fields
L. E. Chen, A. F. A. Bott, P. Tzeferacos +22
Identifying the sources of the highest energy cosmic rays requires understanding how they are deflected by the stochastic, spatially intermittent intergalactic magnetic field. Here…
The PLUTO Code for Adaptive Mesh Computations in Astrophysical Fluid Dynamics
A. Mignone, C. Zanni, P. Tzeferacos +3
We present a description of the adaptive mesh refinement (AMR) implementation of the PLUTO code for solving the equations of classical and special relativistic magnetohydrodynamics…
Measurement of ion acceleration and diffusion in a laser-driven magnetized plasma
J. T. Y. Chu, J. W. D. Halliday, C. Heaton +25
Here we present results from an experiment performed at the GSI Helmholtz Centre for Heavy Ion Research. A mono-energetic beam of chromium ions with initial energies of …
Exploring the Physics of the Plasma Liner Experiment: A Multi-dimensional Study with FLASH, OSIRIS, and HELIOS
E. C. Hansen, P. Farmakis, D. Michta +5
The Plasma Liner Experiment (PLX) at Los Alamos National Laboratory (LANL) is a platform that seeks to achieve fusion via the Plasma-Jet-Driven Magneto-Inertial Fusion (PJMIF) conc…
Laboratory evidence of dynamo amplification of magnetic fields in a turbulent plasma
P. Tzeferacos, A. Rigby, A. Bott +27
Magnetic fields are ubiquitous in the Universe. Extragalactic disks, halos and clusters have consistently been shown, via diffuse radio-synchrotron emission and Faraday rotation me…
Impact of Electron Transport Models on Capillary Discharge Plasmas
A. Diaw, S. J. Coleman, N. M. Cook +3
Magnetohydrodynamics (MHD) can be used to model capillary discharge waveguides in laser-wakefield accelerators. However, the predictive capability of MHD can suffer due to poor mic…
Strong suppression of heat conduction in a laboratory replica of galaxy-cluster turbulent plasmas
J. Meinecke, P. Tzeferacos, J. S. Ross +32
Galaxy clusters are filled with hot, diffuse X-ray emitting plasma, with a stochastically tangled magnetic field whose energy is close to equipartition with the energy of the turbu…
High Repetition Rate Exploration of the Biermann Battery Effect in Laser Produced Plasmas Over Large Spatial Regions
J. J. Pilgram, M. B. P. Adams, C. G. Constantin +7
In this paper we present a high-repetition-rate experimental platform for examining the spatial structure and evolution of Biermann generated magnetic fields in laser-produced plas…
Inefficient magnetic-field amplification in supersonic laser-plasma turbulence
A. F. A. Bott, L. Chen, G. Boutoux +17
We report a laser-plasma experiment that was carried out at the LMJ-PETAL facility and realized the first magnetized, turbulent, supersonic plasma with a large magnetic Reynolds nu…
Numerical Simulation of magnetized jet creation using a hollow ring of laser beams
Y. Lu, P. Tzeferacos, E. Liang +11
Three dimensional FLASH magneto-hydrodynamics(MHD) modeling is carried out to interpret the OMEGA laser experiments of strongly magnetized, highly collimated jets driven by a ring…