Per Helander

Showing 25 publications

2018

Calculations of impurity transport in Wendelstein 7-X plasmas

Albert Mollén, Matt Landreman, Håkan Smith et al
45th EPS Conference on Plasma Physics, EPS 2018. Vol. 2018-July, p. 445-448
Paper in proceedings
2018

Collisional transport of heavy impurities with flux-surface density variation in stellarators

Stefan Buller, Håkan Smith, Per Helander et al
45th EPS Conference on Plasma Physics, EPS 2018. Vol. 2018-July, p. 1232-1235
Paper in proceedings
2017

Stellarator bootstrap current and plasma flow velocity at low collisionality

Per Helander, Felix Parra, Sarah Newton
Journal of Plasma Physics. Vol. 83
Journal article
2016

Impurity transport and plasma flow in a mixed collisionality stellarator plasma

Sarah Newton, Per Helander, Albert Mollén et al
Proceedings of 26th IAEA Fusion Energy Conference, Kyoto, Japan, p. THC/PDP-15
Conference contribution
2015

Impurities in a non-axisymmetric plasma: Transport and effect on bootstrap current

Albert Mollén, Matt Landreman, Håkan Smith et al
Physics of Plasmas. Vol. 22 (11), p. 112508-
Journal article
2014

Comparison of particle trajectories and collision operators for collisional transport in nonaxisymmetric plasmas

Matt Landreman, Håkan Smith, Albert Mollén et al
Physics of Plasmas. Vol. 21 (4)
Journal article
2011

Runaway electron drift orbits in magnetostatic perturbed fields

Gergely Papp, Michael Drevlak, Tünde Fülöp et al
Nuclear Fusion. Vol. 51 (4), p. 043004-
Journal article
2011

Runaway electron losses caused by resonant magnetic perturbations in ITER

Gergely Papp, Michael Drevlak, Tünde Fülöp et al
Plasma Physics and Controlled Fusion. Vol. 53 (9), p. 095004-
Journal article
2011

Runaway electron losses enhanced by resonant magnetic perturbations

Gergely Papp, M Drevlak, Tünde Fülöp et al
Proceedings of 12th Technical Meeting on Energetic Particles in Magnetic Confinement Systems, p. O.26-
Paper in proceedings
2011

The effect of resonant magnetic perturbations on runaway electrons

Gergely Papp, Michael Drevlak, Tünde Fülöp et al
38th EPS Conference on Plasma Physics 2011, EPS 2011. Strasbourg, 27 June - 1 July 2011, p. 1332-1335
Paper in proceedings
2010

Runaway electron drift orbits in magnetostatic perturbed fields

Gergely Papp, Michael Drevlak, Tünde Fülöp et al
Proceedings of 23rd IAEA Fusion Energy Conference, Korea 2010
Paper in proceedings
2008

Simulation of runaway electron generation during plasma shutdown by doped pellet injection

Tamás Fehér, Kinga Gál, Håkan Smith et al
Proceedings of the 35th EPS Conference on Plasma Physics, Hersonissos, 2008. Vol. 32 (3), p. 1554-1557
Paper in proceedings
2008

Collisionality dependence of the quasilinear particle flux due to microinstabilities

Tünde Fülöp, Istvan Pusztai, Per Helander
Physics of Plasmas. Vol. 15 (7), p. 072308-
Journal article
2008

Magnetic field threshold for runaway generation in tokamak disruptions

Tünde Fülöp, Gergö Pokol, Håkan Smith et al
35th European Physical Society Conference on Plasma Physics, EPS 2008 Combined with the 10th International Workshop on Fast Ignition of Fusion Targets; Hersonissos, Crete; Greece; 9 June 2008 through 13 June 2008. Vol. 32 (2), p. 1014-1017
Paper in proceedings
2008

Runaway electron generation during plasma shutdown by killer pellet injection

Kinga Gál, Tamás Fehér, Håkan Smith et al
Plasma Physics and Controlled Fusion. Vol. 50, p. 055006-
Journal article
2008

Quasilinear transport fluxes driven by electrostatic microinstabilities in tokamaks

Tünde Fülöp, Istvan Pusztai, Per Helander
Proceedings of 22nd IAEA Fusion Energy Conference, Geneva, p. TH/P8-28
Paper in proceedings
2008

Criteria for runaway electron generation in tokamak disruptions

Gergö Pokol, Tünde Fülöp, Håkan Smith et al
Proceedings of 22nd IAEA Fusion Energy Conference, p. TH/P3-4
Paper in proceedings
2008

On the quasilinear transport fluxes driven by microinstabilities in tokamaks

Istvan Pusztai, Tünde Fülöp, Per Helander
Proceedings of the 35th EPS Conference on Plasma Physics, Hersonissos, 2008. Vol. 32 (1), p. 305-308
Paper in proceedings
2007

Runaway electron generation during plasma shutdown by pellet injection

Håkan Smith, Kinga Gál, Tamás Fehér et al
Proceedings of the 34th EPS Conference on Plasma Physics, Warszawa, 2007. Vol. 31 F, p. P4.056-
Paper in proceedings
2007

Runaway Electron Generation during Plasma Shutdown by Pellet Injection

Håkan Smith, Kinga Gál, Tamás Fehér et al
Proceedings of 10th IAEA Technical Meeting on Energetic Particles in Magnetic Confinement Systems (OT13)
Paper in proceedings
2004

Runaway electrons generation in a cooling plasma

Håkan Smith, Per Helander, Tünde Fülöp
Conference proceedings: 46th Annual Meeting of the APS Division of Plasma Physics, Savannah, p. CP1.034-
Paper in proceedings
2002

Approximate solutions of two-way diffusion equations

Fredrik Andersson, Per Helander, Dan Anderson et al
Physical Review E. Vol. 65, p. 036502-
Journal article
2002

Effects on Backscattering on One-Dimensional Electron Beam Transport

Fredrik Andersson, Håkan Smith, Dan Anderson et al
Nuclear Science and Engineering. Vol. 142, p. 150-
Journal article
2000

Theoretical issues in tokamak confinement: internal/edge transport barriers, and runaway avalanche confinement

Jack Connor, Per Helander, A Thyagaraja et al
Proceedings of 18th IAEA Fusion Energy Conference, Sorrento, p. TH/4-2
Paper in proceedings
1994

Dynamics of Fast Ions in Tokamaks

Per Helander
Doctoral thesis

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