Laser-Plasma Accelerator Workshop 2019

Modeling the Temporal Evolution of a Laser-Ionized Plasma Source

Nicht eingeplant

20m

MedILS

Poster Contribution Theory and computation

Sprecher

Michael Gerard (University of Colorado)

Beschreibung

Characterizing the plasma density profile in a plasma accelerator is important for predicting the beam dynamics and the electric field gradients produced in the plasma wake structure. In this poster, we present a two fluid model for the time evolution of the plasma and neutral gas density profiles for a laser ionized plasma filament. Our model includes the effects of hydrodynamic expansion and recombination. We compare our model with experimental measurements of a laser ionized Ar and He plasma that is $\sim .5mm$ wide and $\sim 100cm$ long with densities ${10}^{15-17}c{m}^{-3}$.