The nonlinear dynamics of modulated electrostatic wavepackets propagating in negativeion plasmas is investigated from first principles. A nonlinear Schrödinger equation is derived by adopting a multiscale technique. The stability of breather- like (bright envelope soliton) structures, considered as a precursor to freak wave (rogue wave) formation, is investigated and then tested via numerical simulations.
|Publication status||Published - 2015|
|Event|| European Physical Society Conference on Plasma Physics - Lisbon, Portugal|
Duration: 22 Jun 2015 → 26 Jun 2015
Conference number: 42
|Conference||European Physical Society Conference on Plasma Physics|
|Period||22/06/2015 → 26/06/2015|
Elkamash, I. S., B. Reville, & I. Kourakis (2015). Freak waves and modulational dynamics in plasmas with negative ions. Paper presented at European Physical Society Conference on Plasma Physics, Lisbon, Portugal.