Radial electric field shear due to neoclassical effects in transport barriers

T. Kiviniemi, T. Kurki-Suonio, S. Sipilä, Jukka Heikkinen, A. Peeters

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)

Abstract

The Er×B flow shear is simulated with a fully kinetic five-dimensional neoclassical Monte Carlo simulation for JET and ASDEX Upgrade plasma edge conditions. Here, Er is the radial electric field and B is the magnetic field. It is shown that high enough shear for turbulence suppression can be driven at the Low (L) to High (H) transition conditions by pure neoclassical effects including ion orbit losses. Simulations indicate higher threshold shear for ASDEX Upgrade than for JET. Shear values are compared to different models and experimental results of critical shear, and isotope effect on shear is discussed. Formation of an internal transport barrier in FT-2 in the presence of lower hybrid waves is also studied.
Original languageEnglish
Pages (from-to)1053-1064
Number of pages12
JournalCzechoslovak Journal of Physics
Volume51
Issue number10
DOIs
Publication statusPublished - 2001
MoE publication typeA1 Journal article-refereed

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shear
electric fields
shear flow
isotope effect
simulation
turbulence
retarding
orbits
thresholds
kinetics
magnetic fields
ions

Cite this

Kiviniemi, T., Kurki-Suonio, T., Sipilä, S., Heikkinen, J., & Peeters, A. (2001). Radial electric field shear due to neoclassical effects in transport barriers. Czechoslovak Journal of Physics, 51(10), 1053-1064. https://doi.org/10.1023/A:1012846201220
Kiviniemi, T. ; Kurki-Suonio, T. ; Sipilä, S. ; Heikkinen, Jukka ; Peeters, A. / Radial electric field shear due to neoclassical effects in transport barriers. In: Czechoslovak Journal of Physics. 2001 ; Vol. 51, No. 10. pp. 1053-1064.
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abstract = "The Er×B flow shear is simulated with a fully kinetic five-dimensional neoclassical Monte Carlo simulation for JET and ASDEX Upgrade plasma edge conditions. Here, Er is the radial electric field and B is the magnetic field. It is shown that high enough shear for turbulence suppression can be driven at the Low (L) to High (H) transition conditions by pure neoclassical effects including ion orbit losses. Simulations indicate higher threshold shear for ASDEX Upgrade than for JET. Shear values are compared to different models and experimental results of critical shear, and isotope effect on shear is discussed. Formation of an internal transport barrier in FT-2 in the presence of lower hybrid waves is also studied.",
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Kiviniemi, T, Kurki-Suonio, T, Sipilä, S, Heikkinen, J & Peeters, A 2001, 'Radial electric field shear due to neoclassical effects in transport barriers', Czechoslovak Journal of Physics, vol. 51, no. 10, pp. 1053-1064. https://doi.org/10.1023/A:1012846201220

Radial electric field shear due to neoclassical effects in transport barriers. / Kiviniemi, T.; Kurki-Suonio, T.; Sipilä, S.; Heikkinen, Jukka; Peeters, A.

In: Czechoslovak Journal of Physics, Vol. 51, No. 10, 2001, p. 1053-1064.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Radial electric field shear due to neoclassical effects in transport barriers

AU - Kiviniemi, T.

AU - Kurki-Suonio, T.

AU - Sipilä, S.

AU - Heikkinen, Jukka

AU - Peeters, A.

PY - 2001

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AB - The Er×B flow shear is simulated with a fully kinetic five-dimensional neoclassical Monte Carlo simulation for JET and ASDEX Upgrade plasma edge conditions. Here, Er is the radial electric field and B is the magnetic field. It is shown that high enough shear for turbulence suppression can be driven at the Low (L) to High (H) transition conditions by pure neoclassical effects including ion orbit losses. Simulations indicate higher threshold shear for ASDEX Upgrade than for JET. Shear values are compared to different models and experimental results of critical shear, and isotope effect on shear is discussed. Formation of an internal transport barrier in FT-2 in the presence of lower hybrid waves is also studied.

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DO - 10.1023/A:1012846201220

M3 - Article

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SP - 1053

EP - 1064

JO - Czechoslovak Journal of Physics

JF - Czechoslovak Journal of Physics

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