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Kennedy, D.; Helander, P.: Coulomb collisions in strongly anisotropic plasmas II. Cyclotron cooling in laboratory pair plasmas. Journal of Plasma Physics 87 (1), 905870106 (2021)

Kennedy, D.; Helander, P.: Coulomb collisions in strongly anisotropic plasmas I. Cyclotron cooling in electron–ion plasmas. Journal of Plasma Physics 87 (1), 905870107 (2021)

Zocco, A.; Helander, P.; Weitzner, H.: Magnetic reconnection in 3D fusion devices: non-linear reduced equations and linear current-driven instabilities. Plasma Physics and Controlled Fusion 63, 025001 (2021)

Alcuson, J. A.; Xanthopoulos, P.; Plunk, G. G.; Helander, P.; Wilms, F.; Turkin, Y.; Stechow, A. v.; Grulke, O.: Suppression of electrostatic micro-instabilities in maximum-J stellarators. Plasma Physics and Controlled Fusion 62, 035005 (2020)

Buller, S.; Helander, P.: Effects of collisions on impurity transport driven by electrostatic modes. Journal of Plasma Physics 86 (3), 905860313 (2020)

Catto, P. J.; Helander, P.: Bootstrap current and parallel ion velocity in imperfectly optimized stellarators. Journal of Plasma Physics 85 (1), 905860105 (2020)

Catto, P. J.; Helander, P.: Corrigendum: Bootstrap current and parallel ion velocity in imperfectly optimized stellarators. Journal of Plasma Physics 86 (6), 905860612 (2020)

Fülöp, T.; Helander, P.; Vallhagen, O.; Embreus, O.; Hesslow, L.; Svensson, P.; Creely, A. J.; Howard, N. T.; Rodriguez-Fernandez, P.: Effect of plasma elongation on current dynamics during tokamak disruptions. Journal of Plasma Physics 86 (1), 474860101 (2020)

Helander, P.: Available energy of magnetically confined plasmas. Journal of Plasma Physics 86, 905860201 (2020)

Helander, P.; Drevlak, M.; Zarnstorff, M.; Cowley, S. C.: Stellarators with Permanent Magnets. Physical Review Letters 124, 095001 (2020)

Henneberg, S. A.; Drevlak, M.; Helander, P.: Improving fast-particle confinement in quasi-axisymmetric stellarator optimization. Plasma Physics and Controlled Fusion 62, 014023 (2020)

Kennedy, D.; Mishchenko, A.; Xanthopoulos, P.; Helander, P.; Banon Navarro, A.; Görler, T.: Linear gyrokinetics of electron–positron plasmas in closed field-line systems. Journal of Plasma Physics 86 (2), 905860208 (2020)

Kolmes, E. J.; Helander, P.; Fisch, N. J.: Available energy from diffusive and reversible phase space rearrangements. Physics of Plasmas 27, 062110 (2020)

Rodriguez, E.; Helander, P.; Bhattacharjee, A.: Necessary and sufficient conditions for quasisymmetry. Physics of Plasmas 27, 062501 (2020)

Stoneking, M.; Pedersen, T. S.; Helander, P.; Chen, H.; Hergenhahn, U.; Stenson, E. V.; Fiksel, G.; Linden, J. v. d.; Saitoh, H.; Surko, C. M. et al.; Danielson, J. R.; Hugenschmidt, C.; Horn-Stanja, J.; Mishchenko, A.; Kennedy, D.; Deller, A.; Card, A.; Nißl, S.; Singer, M.; König, S.; Willingale, L.; Peebles, J.; Edwards, M. R.; Chin, K.: A new frontier in laboratory physics: magnetized electron–positron plasmas. Journal of Plasma Physics 86 (6), 155860601 (2020)

Xanthopoulos, P.; Bozhenkov, S.; Beurskens, M. N.; Smith, H. M.; Plunk, G. G.; Helander, P.; Beidler, C. D.; Alcuson, J. A.; Alonso, A.; Dinklage, A. et al.; Ford, O.; Fuchert, G.; Geiger, J.; Proll, J. . .; Pueschel, M. J.; Turkin, Y.; Warmer, F.; W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society: Turbulence Mechanisms of Enhanced Performance Stellarator Plasmas. Physical Review Letters 124, 075001 (2020)

Aleynikov, P.; Breizman, B. N.; Helander, P.; Turkin, Y.: Plasma ion heating by cryogenic pellet injection. Journal of Plasma Physics 85 (1), 905850105 (2019)

Dominski, J.; Chang, C. S.; Hager, R.; Helander, P.; Ku, S.; Yoon, E. S.: Study of up-down poloidal density asymmetry of high-Z impurities with the new impurity version of XGCa. Journal of Plasma Physics 85 (5), 905850510 (2019)

Drevlak, M.; Beidler, C. D.; Geiger, J.; Helander, P.; Turkin, Y.: Optimisation of stellarator equilibria with ROSE. Nuclear Fusion 59, 016010 (2019)

Henneberg, S. A.; Drevlak, M.; Nührenberg, C.; Beidler, C. D.; Turkin, Y.; Loizu, J.; Helander, P.: Properties of a new quasi-axisymmetric configuration. Nuclear Fusion 59, 026014 (2019)