Wendler, D., Griener, M., Dux, R., Wolfrum, E., Stroth, U., & ASDEX Upgrade Team, Max Planck Institute for Plasma Physics, Max Planck Society (2019). Influence of the optical thickness on the evaluation of the He beam diagnostics at ASDEX Upgrade. Poster presented at DPG-Frühjahrstagung 2019 der Sektion Materie und Kosmos (SMuK), München.