Zobrazeno 1 - 9
of 9
pro vyhledávání: '"G. G. Plunk"'
Autor:
G. T. Roberg-Clark, G. G. Plunk, P. Xanthopoulos, C. Nührenberg, S. A. Henneberg, H. M. Smith
Publikováno v:
Physical Review Research, Vol 5, Iss 3, p L032030 (2023)
Integrating turbulence into stellarator optimization is achieved by targeting the onset for the ion-temperature-gradient mode, highlighting effects of field line curvature, parallel connection length, local magnetic shear, and flux surface expansion.
Externí odkaz:
https://doaj.org/article/36bd483008f04e31ace0aad2d401a737
Publikováno v:
Physical Review Research, Vol 4, Iss 3, p L032028 (2022)
We present a modified gyrokinetic theory to predict the critical gradient that determines the linear onset of the ion temperature gradient (ITG) mode in stellarator plasmas. A coarse-graining technique is applied to the drift curvature, entering the
Externí odkaz:
https://doaj.org/article/1d9f2e77e3254a7e8e26a4bd86b810a0
Publikováno v:
Physical Review X, Vol 6, Iss 2, p 021033 (2016)
The magnetic surfaces of modern stellarators are characterized by complex, carefully optimized shaping and exhibit locally compressed regions of strong turbulence drive. Massively parallel computer simulations of plasma turbulence reveal, however, th
Externí odkaz:
https://doaj.org/article/426e27f894a54457ab2faae3b6ecd25c
Autor:
P, Xanthopoulos, S A, Bozhenkov, M N, Beurskens, H M, Smith, G G, Plunk, P, Helander, C D, Beidler, J A, Alcusón, A, Alonso, A, Dinklage, O, Ford, G, Fuchert, J, Geiger, J H E, Proll, M J, Pueschel, Y, Turkin, F, Warmer, The W-X, Team
Publikováno v:
Physical Review Letters
Physical Review Letters, 125(7):075001. American Physical Society
Physical Review Letters, 125(7):075001. American Physical Society
We theoretically assess two mechanisms thought to be responsible for the enhanced performance observed in plasma discharges of the Wendelstein 7-X stellarator experiment fueled by pellet injection. The effects of the ambipolar radial electric field a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f22434c4721d2779b41c7a3dc786b215
https://hdl.handle.net/21.11116/0000-0007-04E4-321.11116/0000-0007-04E6-1
https://hdl.handle.net/21.11116/0000-0007-04E4-321.11116/0000-0007-04E6-1
Autor:
G G, Plunk, P, Xanthopoulos, G M, Weir, S A, Bozhenkov, A, Dinklage, G, Fuchert, J, Geiger, M, Hirsch, U, Hoefel, M, Jakubowski, A, Langenberg, N, Pablant, E, Pasch, T, Stange, D, Zhang, The, W-X Team
Publikováno v:
Physical Review Letters
Electron temperature gradient (ETG)-driven turbulence, despite its ultrafine scale, is thought to drive significant thermal losses in magnetic fusion devices---but what role does it play in stellarators? The first numerical simulations of ETG turbule
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e56b3f0ed2d2621936ed3ec401e5679e
Autor:
J A Alcusón, P Xanthopoulos, G G Plunk, P Helander, F Wilms, Y Turkin, A von Stechow, O Grulke
Publikováno v:
Plasma Physics & Controlled Fusion; Mar2020, Vol. 62 Issue 3, p1-1, 1p
Autor:
G G Plunk, A Bañón Navarro
Publikováno v:
New Journal of Physics; Feb2017, Vol. 19 Issue 2, p1-1, 1p
Publikováno v:
Plasma Physics & Controlled Fusion; Apr2015, Vol. 57 Issue 4, p1-1, 1p
Publikováno v:
New Journal of Physics, Vol 14, Iss 10, p 103030 (2012)
In gyrokinetic theory, there are two quadratic measures of fluctuation energy, left invariant under nonlinear interactions, that constrain turbulence. In a recent work (Plunk and Tatsuno 2011 Phys. Rev. Lett. 106 165003) we reported on the novel cons
Externí odkaz:
https://doaj.org/article/35aeed0e02ea4a0aa2a102bf84eadd23