Speaker
Roni Koitermaa
(University of Helsinki)
Description
Vacuum arcing involves the coupling of multiple physical mechanisms starting from electron emission and leading to plasma formation. The importance of different physical interactions for arc occurrence is an important aspect which is still largely not understood. Here we use particle-in-cell simulations with Monte Carlo collisions concurrently coupled with electron emission and heating calculations (FEMOCS code) to study vacuum arc initiation. We identify the factors that contribute most significantly to the formation of the initial plasma. The dynamics of the initial plasma around a nanotip is simulated to study the coupling between different physical interactions.
Author
Roni Koitermaa
(University of Helsinki)
Co-authors
Andreas Kyritsakis
Flyura Djurabekova
(University of Helsinki)
Tauno Tiirats
(University of Tartu)
Prof.
Veronika Zadin
(University of Tartu (EE))
