Department of Physics

Indian Institute Of Technology Madras , Chennai

Laser-driven shock acceleration of quasi-monoenergetic ions in the ultra-relativistic regime: QED effects, radiation reaction and pair plasma formation

Speaker : Shikha Bhadoria, Max Planck Institute for Nuclear Physics, Heidelberg, Germany

2019-02-05

Abstract :

The effect of quantum electrodynamic effects like radiation reaction and  pair production on shock formation and subsequent ion acceleration from  laser-plasma interaction are explored by means of particle-in-cell  simulations. In this setup, the incident laser pushes the laser-plasma  interface inside the plasma target through the hole-boring effect and  generates hot electrons. The propagation of these hot electrons inside  the target excites a return plasma current, leading to filamentary  structures caused by the Weibel/filamentation instability which  eventually leads to the formation of shock. In the ultra-relativistic  regime, both radiation reaction and pair plasma formation tend to slow  down the shock velocity which makes the quasi-monoenergetic ion  acceleration lasting on longer timescales.

Key Speaker Shikha Bhadoria, Max Planck Institute for Nuclear Physics, Heidelberg, Germany
Guests None
Place Seminar Room
Start Time 11:00 AM
Finish Time 12:00 PM
External Link None