15 citations · 38 across the 12 of their papers we have counts for
10 papers · 1 filter
The effect of viscosity and resistivity on Rayleigh-Taylor instability induced mixing in magnetized high energy density plasmas
Ratan Kumar Bera, Yang Song, Bhuvana Srinivasan
This work numerically investigates the role of viscosity and resistivity on Rayleigh-Taylor instabilities in magnetized high-energy-density (HED) plasmas for a high Atwood number a…
Excitation and breaking of relativistic electron beam driven longitudinal electron-ion modes in a cold plasma
Ratan Kumar Bera, Arghya Mukherjee, Sudip Sengupta +1
The excitation and breaking of relativistically intense electron-ion modes in a cold plasma is studied using 1D-fluid simulation techniques. To excite the mode, we have used a rela…
Propagation of slow electromagnetic disturbances in plasma
Sharad Kumar Yadav, Ratan Kumar Bera, Deepa Verma +2
Electromagnetic (EM) waves/disturbances are typically the best means to understand and analyze an ionized medium like plasma. However, the propagation of electromagnetic waves with…
Effect of Transverse Beam Size on the Wakefields and Driver Beam Dynamics in Electron Beam Driven Plasma Wakefield Acceleration
Ratan Kumar Bera, Devshree Mandal, Amita Das +1
In this paper, wakefields driven by a relativistic electron beam in a cold homogeneous plasma is studied using 2-D fluid simulation techniques. It has been shown that in the limit…
2-D fluid simulation of a rigid relativistic electron beam driven wakefield in a cold plasma
Ratan Kumar Bera, Amita Das, Sudip Sengupta
Fluid simulations, which are considerably simpler and faster, have been employed to study the behavior of the wakefield driven by a relativistic rigid beam in a 2-D cold plasma. Wh…
Evidence of new finite beam plasma instability for magnetic field generation
Amita Das, Atul Kumar, Chandrasekhar Shukla +8
We demonstrate by computer simulations, laser plasma experiments, and analytic theory that a hitherto unknown instability is excited in the beam plasma system with finite transvers…