SMuK 2023 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 12: Poster II

P 12.11: Poster

Mittwoch, 22. März 2023, 17:30–19:00, HSZ EG

Influence of the ion focus on diagnostics and simulations in 2D dusty plasmas — •Natascha Blosczyk, Yang Liu, and Dietmar Block — Institute of Experimental and Applied Physics, Kiel University, Germany

Evaluating dust particle properties is an important part in the field of dusty plasmas as properties such as charge can strongly influence the behaviour of single particles and, because of their coupling, of the entire system. A current interest is the description and evaluation of wave propagation in a 2D cluster, especially in clusters of binary mixtures. For this purpose, phonon dispersion relations and configurational temperature can be used as diagnostics to evaluate wave frequencies and charge respectively. These methods rely on a full and correct description of the interaction forces. Until now it has been mostly assumed to be a purely repulsive Yukawa interaction, disregarding the influence of a positive ion focus charge. Based on MD simulations, this poster will discuss the importance of the ion focus in simulations and diagnostics and wether it can really be disregarded.