Laser Driven Wake Wave in Pair-ion Electron Plasma with Inclusion of Ion Dynamics

Abstract

Abstract The generation of laser driven plasma wake wave has been investigated in hydrogen 
 pair-ion electron plasma. The consideration of 
 dynamics of the positive and negative ion pair have been adopted. Inclusion of the ion motion
 has the effect of modifying the electric field and density profiles of the wake wave.
 This has been demonstrated by observing the variation of the 
 electron density and electric field profiles with the change in positive ion/ negative ion concentration.
 High density spikes and sawtooth like electric field profiles (indication of wave breaking) are observed 
 to transform into sinusoidal electric field profile and low amplitude density profile 
 when the positive ion density in the plasma system is kept higher. Furthermore, we observe the variation of 
 the electric field amplitude of the wake wave with the laser pulse width. This feature is the indication of 
 the possibility of hybrid acceleration (Direct Laser Acceleration and wake field acceleration) 
 of accelerated beam. The results are quite relevant in the field Laser plasma interaction field 
 in experimental physics and also in planetary
 environment.