86 citations · 169 across the 15 of their papers we have counts for
16 papers
Transverse spectral instability in generalized Kadomtsev-Petviashvili equation
Bhavna, Atul Kumar, Ashish Kumar Pandey
We study transverse stability and instability of one-dimensional small-amplitude periodic traveling waves of a generalized Kadomtsev-Petviashvili equation with respect to two-dimen…
High-frequency instabilities of the Ostrovsky equation
Bhavna, Atul Kumar, Ashish Kumar Pandey
We study spectral stability of small amplitude periodic traveling waves of the Ostrovsky equation. We prove that these waves exhibit spectral instabilities arising from a collision…
Kinetic simulations of collision-less plasmas in open magnetic geometries
Atul Kumar, J. F. Caneses Marin
Laboratory plasmas in open magnetic geometries can be found in many different applications such as (1) Scrape-Of-Layer (SOL) and divertor regions in toroidal confinement fusion dev…
Precursor magneto-sonic solitons in a plasma from a moving charged object
Atul Kumar, Abhijit Sen
The nature of fore-wake excitations created by a charged object moving in a magnetized plasma is investigated using particle-in-cell simulations. Our studies establish for the firs…
A new mechanism of direct coupling of laser energy to ions
Ayushi Vashistha, Devshree Mandal, Atul Kumar +2
The well-known schemes (e.g. Brunel, resonance absorption, JxB heating etc.) couple laser energy to the lighter electron species of the plasma. In this work, a fundamentally new me…
Drift waves with dust acoustic wave coupling
Atul Kumar, Amita Das, Predhiman Kaw
Drift wave is a prominent mode of a magnetized plasma of inhomogeneous density. It plays an important role in the transport of particles, energy and momentum perpendicular to the a…