Proll, J. H. E.; Weir, G. M.; Helander, P.; Xanthopoulos, P.; W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society: Are TEMs stable in the W7‐X high mirror configuration and does this confirm our theory? – Comparisons of ECE data with GENE simulations. 19th Coordinated Working Group Meeting, Berlin (2019)

Zocco, A.; Aleynikova, K.; Helander, P.; Nührenberg, C.; Xanthopoulos, P.; Connor, J. W.; Motoki, N.: Electromagnetic microinstabilities in tokamaks and stellarators: the Kinetic Ballooning Mode. 19th Coordinated Working Group Meeting, Berlin (2019)

Zocco, A.; Hatzky, R.; Kleiber, R.; Könies, A.; Mishchenko, A.; Beidler, C. D.; Helander, P.; Nührenberg, C.; Rahbarnia, K.; Thomsen, H. et al.; Turkin, Y.; Weitzner, H.: Reconnection scales in W7-X. 19th Coordinated Working Group Meeting, Berlin (2019)

Aleynikov, P.; Breizman, B. N.; Helander, P.; Runov, A.; Turkin, Y.: Pellet cloud expansion in hot plasmas. 46th EPS Conference on Plasma Physics, Milan (submitted)

Helander, P.; Puranen, T.; Meriläinen, A.; Maconi, G.; Penttilä, A.; Gritsevich, M.; Kassamakov, I.; Salmi, A.; Muinonen, K.; Hæggström, E.: Optimizing Rotation Control in Acoustic Levitation. Physics Days 2019 (PD 2019), Helsinki (2019)

Kennedy, D.; Mishchenko, A.; Helander, P.: Local gyrokinetic stability theory of plasmas of arbitrary degree of neutrality. DPG-Frühjahrstagung 2019 der Sektion Materie und Kosmos (SMuK), München (2019)

Kennedy, D.; Mishchenko, A.; Xanthopoulos, P.; Helander, P.; Banon Navarro, A.; Görler, T.: Gyrokinetics of electron-positron plasmas in a magnetic Z-pinch: towards a turbulence free plasma? 46th EPS Conference on Plasma Physics, Milan (submitted)

Newton, S. L.; Helander, P.; Mollen, A.; Smith, H. M.; Turkin, Y.: Impurity Transport and Plasma Flow in a Mixed Collisionality Stellarator Plasma. 26th IAEA Fusion Energy Conference (FEC 2016), Kyoto (2019)

Plunk, G. G.; Landreman, M.; Helander, P.: Direct Constructions of Quasi-isodynamic Stellarators Using a Near-axis Expansion. 22nd International Stellarator and Heliotron Workshop 2019 (ISHW 2019), Madison, WI (submitted)

Smith, H. M.; Beidler, C. D.; Turkin, Y.; Bozhenkov, S.; Ford, O.; Fuchert, G.; Geiger, J.; Helander, P.; Marushchenko, N.; Pablant, N. et al.; Pasch, E.; Stechow, A. v.; Pedersen, T. S.; Wolf, R.; W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society: Would the Wendelstein 7-X "record discharge" have been possible in other magnetic configurations? 22nd International Stellarator and Heliotron Workshop 2019 (ISHW 2019), Madison, WI (submitted)

Helander, P.: Hydrodynamik. Lecture: Vorlesung (SS 2019), Universität Greifswald

Helander, P.: Theorie magnetisch eingeschlossener Plasmen. Lecture: Vorlesung (WS 2019/2020), Universität Greifswald

Pedersen, T. S.; Helander, P.; Stenson, E. V.; Hergenhahn, U.; Saitoh, H.; Horn-Stanja, J.; Stoneking, M.; Danielson, J. R.; Surko, C. M.: A new frontier in laboratory plasma- and astrophysics: electron-positron plasmas. Max-Planck-Institut für Plasmaphysik, Garching (2019), 10 pp.

Helander, P.: Stellarator Theory. (2019)