Am Montag (12.12.22) um 12.00 Uhr c.t. findet der nächste Termin unseres Physikalischen Kolloquiums statt.
An diesem Termin werden die beiden Kandidat*innen für den diesjährigen Dissertationspreis ihre Vorträge halten. Die Fakultät freut sich auf die Vorträge von Dr. Meike Küßner und Dr. Julian Held.
In addition to conventional matter the theory of the strong interaction predicts a number of exotic hadrons whose internalstructure is more complex. Such exotic particles include e.g. glueballs composed only of gluons and hybrids. The understanding of such exotic states contributes to the fundamental question of how mass is generated via strong interaction. This talk will present, among other analyses, the results of a coupled partial wave analysis of events from different decay channels from two photon collisions which were detected using the BESIII detector located in China. This allows direct conclusions about the inner structure of the contributing resonances. The underlying motivation, applied strategies and obtained results and their relevance will be discussed.
Abstract Vortrag Dr. Meike Küßner
Magnetron sputtering plasmas are a well-established tool for the deposition of metallic or ceramic coatings. A target material is sputtered by fast ions extracted from the plasma and deposited on a workpiece.
From a plasma physics perspective, these discharges are very interesting because they feature a configuration of crossed electric and magnetic fields. Such configurations, as they are also found in hall effect
thrusters, are prone to create waves and instabilities. Magnetron sputtering discharges exhibit an unusually strong wave phenomenon – the so-called spokes. In this presentation, we will explain how these spokes are created and sustained and will discuss their influence on the ion transport, which has important implications for the quality and deposition rate of the created coatings.
Abstract Vortrag Dr. Julian Held
Die Einführung erfolgt durch Prof. Dr. Ilya Eremin.
Die Fakultät lädt alle Interessierten herzlich ein. Die Veranstaltung findet im Hörsaal HNC 10 und hybrid via Zoom statt. Vor dem Kolloquium bieten wir Ihnen Kaffee und Kekse an.