Berlin 2024 – scientific programme
Parts | Days | Selection | Search | Updates | Downloads | Help
AKBP: Arbeitskreis Beschleunigerphysik
AKBP 6: New Accelerator Concepts - Models and Experiments
AKBP 6.4: Talk
Tuesday, March 19, 2024, 11:45–12:00, E 020
Predicting Atomic States in Laser Plasma Accelerators — •Brian Edward Marré1, Axel Huebl2, Sergei Bastrakov1, Michael Bussman1,3, René Widera1, Thomas Cowan1, Ulrich Schramm1, and Thomas Kluge1 — 1Helmholtz-Zentrum Dresden-Rossendorf — 2Berkley National Lab — 3CASUS-Center for Advanced System Understanding
Standard atomic physics models in Particle-in-Cell(PIC) simulations either neglect excited states, predict atomic state population in post processing only, or assume quasi-thermal plasma conditions.
This is not sufficient for high-intensity short-pulse laser generated plasmas, due to their non-equilibrium, transient and non-thermal plasma conditions, which are now becoming accessible in XFEL experiments at HIBEF (EuropeanXFEL), SACLA (Japan) or at MEC (LCLS/SLAC).
To remedy this we have developed FLYonPIC, an extension of the PIC code PIConGPU, modelling excited atomic states population dynamics in transient plasmas and without assuming a specific spectrum or temperature for electrons. This extension is based on an atomic state super configuration model, solved explicitly in time and with feedback to PIC, enabling full self consistency.
We will present an efficient implementation and discuss statistical analysis for validation of our model.
Keywords: Particle in Cell; atomic physics; FLYonPIC; Laser Plasma Accelerators; PIConGPU