Freiburg 2024 – scientific programme
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A: Fachverband Atomphysik
A 33: Poster VI
A 33.8: Poster
Thursday, March 14, 2024, 17:00–19:00, Tent A
Accuracy and efficiency of Particle-in-Cell schemes simulating ultrafast laser-induced plasma dynamics — •Richard Altenkirch1, Graeme Bart2, Christian Peltz1, Thomas Fennel1, and Thomas Brabec2 — 1Universität Rostock, Germany — 2uOttawa, Canada
Particle-in-cell (PIC) algorithms have been developed since the 1970s and since grown into one of the most widely used tools for studying intense light-matter interactions and the associated plasma kinetics on a macroscopic scale. Lately, the introduction of the microscopic Particle-in-Cell scheme [1] has even allowed for the simulation of strongly coupled plasmas by incorporating the essential short-range interactions that are neglected in typical PIC routines. However, the need to resolve individual particles causes MicPIC to become very computationally expensive for spatial regimes above 1 micron [2]. Therefore, in order to capture effects of the spatial laser beam shape at optical frequencies on ablation processes, macroscopic PIC approaches are needed. However, MicPIC results still function as a very helpful guideline for gauging to what extent these different routines are suitable for simulating specific scenarios. Using MicPIC as a reference, we analysed the efficiency and the accuracy of PIC as well as collisional PIC schemes in the ablation scenario of a laser-induced plasma in a thin gold film.
[1] C.~Varin, C.~Peltz, T.~Brabec, T.~Fennel, Ann. Der Phys., 526 (2014), pp. 135-156
[2] G. Bart, C. Peltz, N. Bigaouette, T. Fennel, T. Brabec, C. Varin, Computer Physics Communications 219 (2017), pp. 269-285
Keywords: plasma kinetics; particle-in-cell; ablation