The effect of plasmoid drifts on the pellet rocket effect in magnetic confinement fusion plasmas

Authors: Guth, N. J., Vallhagen, O., Helander, P., Fülöp, T., Tresnjic, A., Newton, S. L., Pusztai, I.

Subject Terms: Physics - Plasma Physics

Access URL: http://arxiv.org/abs/2412.15824

The pellet rocket effect in magnetic confinement fusion plasmas

Authors: Guth, Nico J., Vallhagen, Oskar, Helander, Per, Pusztai, Istvan, Newton, Sarah L., Fülöp, Tünde

Subject Terms: Physics - Plasma Physics

Access URL: http://arxiv.org/abs/2412.15080

Zombie Epidemic -- on Modeling the Effect of Interventions

Authors: Ek, Kaisa, Avela, Aleksi, Haaki, Willehard, Helander, Sami, Lumme, Ville, Mutikainen, Terho, Pere, Jaakko, Vesselinova, Natalia, Viitasaari, Lauri, Ilmonen, Pauliina

Subject Terms: Statistics - Applications

Access URL: http://arxiv.org/abs/2410.12502

Quasi-isodynamic stellarators with low turbulence as fusion reactor candidates

Authors: Goodman, Alan G., Xanthopoulos, Pavlos, Plunk, Gabriel G., Smith, Håkan, Nührenberg, Carolin, Beidler, Craig D., Henneberg, Sophia A., Roberg-Clark, Gareth, Drevlak, Michael, Helander, Per

Subject Terms: Physics - Plasma Physics

Access URL: http://arxiv.org/abs/2405.19860

Available energy of plasmas with small fluctuations

Authors: Helander, P., Mackenbach, R. J. J.

Source: J. Plasma Phys. 90 (2024) 905900401

Subject Terms: Physics - Plasma Physics

Access URL: http://arxiv.org/abs/2405.12599

Optimised stellarators with a positive radial electric field

Authors: Helander, Per, Goodman, Alan G., Beidler, Craig D., Kuczyński, Michal, Smith, Håkan M.

Subject Terms: Physics - Plasma Physics

Access URL: http://arxiv.org/abs/2405.07085

The maximum-$J$ property in quasi-isodynamic stellarators

Authors: Rodriguez, E., Helander, P., Goodman, A. G.

Subject Terms: Physics - Plasma Physics

Access URL: http://arxiv.org/abs/2311.14439

Ion temperature and density gradient driven instabilities and turbulence in Wendelstein 7-X close to the stability threshold

Authors: Podavini, L., Zocco, A., García-Regaña, J. M., Barnes, M., Parra, F. I., Mishchenko, A., Helander, P.

Subject Terms: Physics - Plasma Physics

Access URL: http://arxiv.org/abs/2311.04342

The residual flow in well-optimized stellarators

Authors: Plunk, G. G., Helander, P.

Source: Journal of Plasma Physics , Volume 90 , Issue 2 , April 2024 , 905900205

Subject Terms: Physics - Plasma Physics

Access URL: http://arxiv.org/abs/2310.14218

Available energy of trapped electrons in Miller tokamak equilibria

Authors: Mackenbach, R. J. J., Proll, J. H. E., Snoep, G., Helander, P.

Subject Terms: Physics - Plasma Physics

Access URL: http://arxiv.org/abs/2307.02304

Administrative Structures of Higher Education Institutions - Connection with the Experience of Professional Agency of Teaching Staff

Authors: Tanja Hautala (ORCID 0000-0002-6508-9822), Jaakko Helander (ORCID 0000-0002-0733-4236), Vesa Korhonen (ORCID 0000-0001-5265-4549)

Source: International Journal of Leadership in Education. 2024 27(4):909-933.

Peer Reviewed: Y

Page Count: 25

Descriptors: Universities, Colleges, Administrative Organization, College Faculty, Teachers, Professional Autonomy, Experience, Foreign Countries, College Administration, Educational Change, Work Environment, Work Attitudes

Geographic Terms: Finland

Bounce-averaged drifts: Equivalent definitions, numerical implementations, and example cases

Authors: Mackenbach, R. J. J., Duff, J. M., Gerard, M. J., Proll, J. H. E., Helander, P., Hegna, C. C.

Subject Terms: Physics - Plasma Physics, Physics - Computational Physics

Access URL: http://arxiv.org/abs/2305.01225

When and Where to Step: Terrain-Aware Real-Time Footstep Location and Timing Optimization for Bipedal Robots

Authors: Wang, Ke, Hu, Zhaoyang Jacopo, Tisnikar, Peter, Helander, Oskar, Chappell, Digby, Kormushev, Petar

Subject Terms: Computer Science - Robotics, Mathematics - Numerical Analysis

Access URL: http://arxiv.org/abs/2302.07345

Drift of ablated material after pellet injection in a tokamak

Authors: Vallhagen, O., Pusztai, I., Helander, P., Newton, S. L., Fülöp, T.

Subject Terms: Physics - Plasma Physics

Access URL: http://arxiv.org/abs/2301.12911

Energetic bounds on gyrokinetic instabilities. Part III. Generalized free energy

Authors: Plunk, G. G., Helander, P.

Source: Journal of Plasma Physics, 89(4), 905890419 (2023)

Subject Terms: Physics - Plasma Physics

Access URL: http://arxiv.org/abs/2301.00988

Constructing precisely quasi-isodynamic magnetic fields

Authors: Goodman, Alan, Mata, Katia Camacho, Henneberg, Sophia A, Jorge, Rogerio, Landreman, Matt, Plunk, Gabriel, Smith, Hakan, Mackenbach, Ralf, Helander, Per

Subject Terms: Physics - Plasma Physics

Access URL: http://arxiv.org/abs/2211.09829

A single-field-period quasi-isodynamic stellarator

Authors: Jorge, R., Plunk, G. G., Drevlak, M., Landreman, M., Lobsien, J. -F., Mata, K. Camacho, Helander, P.

Subject Terms: Physics - Plasma Physics

Access URL: http://arxiv.org/abs/2205.05797

Energetic bounds on gyrokinetic instabilities. Part II. Modes of optimal growth

Authors: Plunk, G. G., Helander, Per

Subject Terms: Physics - Plasma Physics

Access URL: http://arxiv.org/abs/2201.08707

FEM Modelling of Ultrasound Enhanced Electrospinning (USES)

Authors: Makinen, J., Helander, P., Puranen, T., Hunnakko, J., Kogermann, K., Laidmae, I., Nieminen, H.J., Salmi, A., Heinamaki, J., Haggstrom, E.

Source: 2019 IEEE International Ultrasonics Symposium (IUS) Ultrasonics Symposium (IUS), 2019 IEEE International. :2511-2514 Oct, 2019

Relation: 2019 IEEE International Ultrasonics Symposium (IUS)

Energetic bounds on gyrokinetic instabilities. Part I: Fundamentals

Authors: Helander, P., Plunk, G. G.

Subject Terms: Physics - Plasma Physics

Access URL: http://arxiv.org/abs/2112.09504