333 citations · 2k across the 60 of their papers we have counts for
47 papers · 1 filter
Notes on a 1-dimensional electrostatic plasma model
F. Pegoraro, P. J. Morrison
A starting point for deriving the Vlasov equation is the BBGKY hierarchy that describes the dynamics of coupled marginal distribution functions. With a large value of the plasma pa…
Nonlinear electrodynamics at cylindrical "cumulation" fronts
F. Pegoraro, S. V. Bulanov
Converging cylindrical electromagnetic fields in vacuum have been shown (E. I. Zababakhin, M. N. Nechaev, {\it Soviet Physics JETP}, {\bf 6}, 345 (1958)) to exhibit amplitude "cumu…
Lagrangian and Dirac constraints for the ideal incompressible fluid and magnetohydrodynamics
P. J. Morrison, T. Andreussi, F. Pegoraro
The incompressibility constraint for fluid flow was imposed by Lagrange in the so-called Lagrangian variable description using his method of multipliers in the Lagrangian (variatio…
Electromagnetic Solitons in Quantum Vacuum
S. V. Bulanov, P. V. Sasorov, F. Pegoraro +5
In the limit of extremely intense electromagnetic fields the Maxwell equations are modified due to the photon-photon scattering that makes the vacuum refraction index depend on the…
Electromagnetic Burst Generation during Annihilation of Magnetic Field in Relativistic Laser-Plasma Interaction
Y. J. Gu, F. Pegoraro, P. V. Sasorov +4
We present the results of 3-dimensional kinetic simulations and theoretical studies on the formation and evolution of the current sheet in a collisionless plasma during magnetic fi…
Hodograph solutions of the wave equation of nonlinear electrodynamics in the quantum vacuum
Francesco Pegoraro, Sergei V. Bulanov
The process of photon-photon scattering in vacuum is investigated analytically in the long-wavelength limit within the framework of the Euler-Heisenberg Lagrangian. In order to sol…
Lorentz invariant "potential magnetic field" and magnetic flux conservation in an ideal relativistic plasma
Francesco Pegoraro
Lorentz invariant scalar functions of the magnetic field are defined in an ideal relativistic plasma. These invariants are advected by the plasma fluid motion and play the role of…
Coherent transport structures in magnetized plasmas II: Numerical results
G. Di Giannatale, M. V. Falessi, D. Grasso +2
In a pair of linked articles (called Article I and II respectively) we apply the concept of Lagrangian Coherent Structures borrowed from the study of Dynamical Systems to magnetic…
Coherent transport structures in magnetized plasmas, I : Theory
G. Di Giannatale, M. V. Falessi, D. Grasso +2
In a pair of linked articles (called Article I and II respectively) we apply the concept of Lagrangian Coherent Structures (LCSs) borrowed from the study of Dynamical Systems to ma…
Electron Weibel Instability in Relativistic Counter-Streaming Plasmas with Flow-Aligned External Magnetic Fields
A. Grassi, M. Grech, F. Amiranoff +3
The Weibel instability driven by two symmetric counter-streaming relativistic electron plasmas, also referred to as current-filamentation instability, is studied in a constant and…
Hamiltonian Magnetohydrodynamics: Lagrangian, Eulerian, and Dynamically Accessible Stability -- Examples with Translation Symmetry
T. Andreussi, P. J. Morrison, F. Pegoraro
Because different constraints are imposed, stability conditions for dissipationless fluids and magnetofluids may take different forms when derived within the Lagrangian, Eulerian (…
Covariant Magnetic Connection Hypersurfaces
F. Pegoraro
In the single fluid, nonrelativistic, ideal-Magnetohydrodynamic (MHD) plasma description magnetic field lines play a fundamental role by defining dynamically preserved "magnetic co…
Radiation Pressure Acceleration: the factors limiting maximum attainable ion energy
S. S. Bulanov, E. Esarey, C. B. Schroeder +5
Radiation pressure acceleration (RPA) is a highly efficient mechanism of laser-driven ion acceleration, with with near complete transfer of the laser energy to the ions in the rela…
Generalised relativistic Ohm's laws, extended gauge transformations and magnetic linking
F. Pegoraro
Generalisations of the relativistic ideal Ohm's law are presented that include specific dynamical features of the current carrying particles in a plasma. Cases of interest for spac…
"Magneto-elastic" waves in an anisotropic magnetised plasma
Daniele Del Sarto, Francesco Pegoraro, Anna Tenerani
The linear waves that propagate in a two fluid magnetised plasma allowing for a non-gyrotropic perturbed ion pressure tensor are investigated. For perpendicular propagation and per…
Enhancing proton acceleration by using composite targets
S. S. Bulanov, E. Esarey, C. B. Schroeder +5
Efficient laser ion acceleration requires high laser intensities, which can only be obtained by tightly focusing laser radiation. In the radiation pressure acceleration regime, whe…
Theory and applications of the Vlasov equation
F. Pegoraro, F. Califano, G. Manfredi +1
Forty articles have been recently published in EPJD as contributions to the topical issue "Theory and applications of the Vlasov equation". The aim of this topical issue was to pro…
MHD equilibria with incompressible flows: symmetry approach
G. Cicogna, F. Pegoraro
We identify and discuss a family of azimuthally symmetric, incompressible, magnetohydrodynamic plasma equilibria with poloidal and toroidal flows in terms of solutions of the Gener…
An Action Principle for Relativistic MHD
Eric D'Avignon, Philip Morrison, Francesco Pegoraro
A covariant action principle for ideal relativistic magnetohydrodynamics (MHD) in terms of natural Eulerian field variables is given. This is done by generalizing the covariant Poi…
Particle acceleration and radiation friction effects in the filamentation instability of pair plasmas
M. D'Angelo, L. Fedeli, A. Sgattoni +2
The evolution of the filamentation instability produced by two counter-streaming pair plasmas is studied with particle-in-cell (PIC) simulations in both one (1D) and two (2D) spati…
Pressure tensor in the presence of velocity shear: stationary solutions and self-consistent equilibria
S. S. Cerri, F. Pegoraro, F. Califano +2
Observations and numerical simulations of laboratory and space plasmas in almost collisionless regimes reveal anisotropic and non-gyrotropic particle distribution functions. We inv…
Laser-Driven Rayleigh-Taylor Instability: Plasmonics Effects and Three-Dimensional Structures
Andrea Sgattoni, Stefano Sinigardi, Luca Fedeli +2
The acceleration of dense targets driven by the radiation pressure of high-intensity lasers leads to a Rayleigh-Taylor instability (RTI) with rippling of the interaction surface. U…
Enhancement of maximum attainable ion energy in the radiation pressure acceleration regime using a guiding structure
S. S. Bulanov, E. Esarey, C. B. Schroeder +5
Radiation Pressure Acceleration relies on high intensity laser pulse interacting with solid target to obtain high maximum energy, quasimonoenergetic ion beams. Either extremely hig…
Strong field electrodynamics of a thin foil
Sergei V. Bulanov, Timur Zh. Esirkepov, Masaki Kando +3
Exact solutions describing the nonlinear electrodynamics of a thin double layer foil are presented. These solutions correspond to a broad range of problems of interest for the inte…