81 citations · 235 across the 8 of their papers we have counts for
8 papers
Effect of Noise on Spatio-Temporal Evolution of Current Filamentation Instability in Relativistic Beam-Plasma Systems
Thulasidharan K, Vishwa Bandhu Pathak
The spatio-temporal evolution of the current filamentation instability in a relativistic beam--plasma system is studied analytically and with two-dimensional particle-in-cell simul…
High-energy betatron source driven by a 4-PW laser with applications to non-destructive imaging
Calin Ioan Hojbota, Mohammad Mirzaie, Do Yeon Kim +10
Petawatt-class lasers can produce multi-GeV electron beams through laser wakefield electron acceleration. As a by-product, the accelerated electron beams can generate broad synchro…
Proof-of-principle experiment for nanoparticle-assisted laser wakefield acceleration
Constantin Aniculaesei, Vishwa Bandhu Pathak, Kyung Hwan Oh +9
In the present work, we demonstrate for the first time a proof-of-principle experiment for nanoparticle-assisted laser wakefield acceleration. The nanoparticles, generated through…
Electron energy increase in a laser wakefield accelerator using longitudinally shaped plasma density profiles
Constantin Aniculaesei, Vishwa Bandhu Pathak, Hyung Taek Kim +13
The phase velocity of the wakefield of a laser wakefield accelerator can, theoretically, be manipulated by shaping the longitudinal plasma density profile, thus controlling the par…
Spatial-temporal evolution of the current filamentation instability
V. B. Pathak, T. Grismayer, A. Stockem +2
The spatial-temporal evolution of the purely transverse current filamentation instability is analyzed by deriving a single partial differential equation for the instability and obt…
Magnetically assisted self-injection and radiation generation for plasma based acceleration
J. Vieira, J. L. Martins, V. B. Pathak +3
It is shown through analytical modeling and numerical simulations that external magnetic fields can relax the self-trapping thresholds in plasma based accelerators. In addition, th…
Effect of the frequency chirp on laser wakefield acceleration
V. B. Pathak, J. Vieira, R. A. Fonseca +1
The role of laser frequency chirps in the laser wakefield accelerator is examined. We show that in the linear regime, the evolution of the laser pulse length is affected by the fre…
Magnetic control of particle-injection in plasma based accelerators
J. Vieira, S. F. Martins, V. B. Pathak +3
The use of an external transverse magnetic field to trigger and to control electron self-injection in laser- and particle-beam driven wakefield accelerators is examined analyticall…