Zobrazeno 1 - 10 of 56 pro vyhledávání: '"Alain Ghizzo"'
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Akademický článek
Hasegawa–Wakatani and Modified Hasegawa–Wakatani Turbulence Induced by Ion-Temperature-Gradient Instabilities
Autor: Daniele Del Sarto, Alain Ghizzo
Publikováno v: Fluids, Vol 2, Iss 4, p 65 (2017)
We review some recent results that have been obtained in the investigation of zonal flow emergence, by means of a gyrokinetic trapped ion model, in the regime of ion temperature gradient instabilities for tokamak plasmas. We show that an analogous fo
Externí odkaz: https://doaj.org/article/e3fba7a3080847048602fa92f8a0f0fd
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3
Transport Barrier Triggered by Resonant Three-Wave Processes Between Trapped-Particle-Modes and Zonal Flow
Autor: Alain Ghizzo, Daniele Del Sarto
Publikováno v: plasma
plasma, MDPI AG, 2019, 2, pp.229-257. ⟨10.3390/plasma2020017⟩
Plasma
Volume 2
Issue 2
Pages 17-257
International audience; We address the mechanisms underlying low-frequency zonal flow generation in a turbulent system through the parametric decay of collisionless trapped particle modes and its feedback on the stabilization of the system. This mode
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c0fc79dea3e980a46e3b6c13c9c4c6ae
https://hal.univ-lorraine.fr/hal-03320837
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4
Momentum transfer driven by fluctuations in relativistic counter-propagating electron beams
Autor: Daniele Del Sarto, Alain Ghizzo
Publikováno v: Plasma Physics and Controlled Fusion
Plasma Physics and Controlled Fusion, IOP Publishing, 2021, 63, ⟨10.1088/1361-6587/abe695⟩
A semi-Lagrangian relativistic Vlasov–Maxwell solver is used to describe the non-linear momentum transfer between electron beams, which is driven by spontaneous fluctuations in the oblique filamentation instability (a type of Weibel mode) in two-di
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::801ea10c7fb8e58a2e90f37d4b6e6ce6
https://doi.org/10.1088/1361-6587/abe695
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5
Elektronická kniha
The Vlasov Equation 1 : History and General Properties
Autor: Pierre Bertrand, Daniele Del Sarto, Alain Ghizzo
The Vlasov equation is the master equation which provides a statistical description for the collective behavior of large numbers of charged particles in mutual, long-range interaction. In other words, a low collision (or “Vlasov”) plasma. Plasma
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6
Saturation of energetic-particle-driven geodesic acoustic modes due to wave–particle nonlinearity
Autor: A. Bottino, I. Novikau, I. Chavdarovski, Alain Ghizzo, D. Del Sarto, Pierre Morel, Alessandro Biancalani, Özgür D. Gürcan, Zhiyong Qiu
Publikováno v: Journal of Plasma Physics
Journal of Plasma Physics, Cambridge University Press (CUP), 2017, 83 (6), pp.725830602. ⟨10.1017/S0022377817000976⟩
Journal of Plasma Physics, 2017, 83 (6), pp.725830602. ⟨10.1017/S0022377817000976⟩
The nonlinear dynamics of energetic-particle (EP) driven geodesic acoustic modes (EGAM) is investigated here. A numerical analysis with the global gyrokinetic particle-in-cell code ORB5 is performed, and the results are interpreted with the analytica
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::03ad1f4105203d4978f49f7bea2f966c
https://doi.org/10.1017/s0022377817000976
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7
Hasegawa–Wakatani and Modified Hasegawa–Wakatani Turbulence Induced by Ion-Temperature-Gradient Instabilities
Autor: Alain Ghizzo, Daniele Del Sarto
Publikováno v: Fluids
Fluids, MDPI, 2017, 2 (4), pp.65. ⟨10.3390/fluids2040065⟩
Fluids; Volume 2; Issue 4; Pages: 65
Fluids, Vol 2, Iss 4, p 65 (2017)
International audience; We review some recent results that have been obtained in the investigation of zonal flow emergence, by means of a gyrokinetic trapped ion model, in the regime of ion temperature gradient instabilities for tokamak plasmas. We s
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d34d8dbca60052e487c1b071e5ef2b4d
https://hal.univ-lorraine.fr/hal-01791831/file/fluids-02-00065.pdf
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8
A pressure tensor description for the time-resonant Weibel instability
Autor: M. Sarrat, D. Del Sarto, Alain Ghizzo
Publikováno v: Journal of Plasma Physics
Journal of Plasma Physics, Cambridge University Press (CUP), 2017, 83 (01), pp.705830103. ⟨10.1017/S0022377816001264⟩
Journal of Plasma Physics, Cambridge University Press (CUP), 2017, 83 (01), pp.705830103. 〈10.1017/S0022377816001264〉
We discuss a fluid model with inclusion of the complete pressure tensor dynamics for the description of Weibel type instabilities in a counterstreaming beams configuration. Differently from the case recently studied in Sarrat et al. 2016, where pertu
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::99b8b82e24defa33bbcc7aab5179b07c
https://hal.univ-lorraine.fr/hal-01807608/file/JPP_2017_Sarrat_705830103.pdf
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9
Parallel implementation of a relativistic semi-Lagrangian Vlasov-Maxwell solver
Autor: M. Sarrat, Laurent Serrat, Alain Ghizzo, Daniele Del Sarto
Publikováno v: The European Physical Journal D : Atomic, molecular, optical and plasma physics
The European Physical Journal D : Atomic, molecular, optical and plasma physics, EDP Sciences, 2017, 71 (11), pp.271. ⟨10.1140/epjd/e2017-80188-4⟩
International audience; We describe the parallel implementation of a semi-lagrangian relativistic VLasov ElectroMagnetic (VLEM) code for the numerical investigation of the dynamics of charged particle distribution in their self-consistent electromagn
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::33685c4b46b032f424a3fa3a89b7a724
https://hal.univ-lorraine.fr/hal-01791759
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10
Shear flow instabilities induced by trapped ion modes in collisionless temperature gradient turbulence
Autor: Xavier Garbet, Yanick Sarazin, Alain Ghizzo, Virginie Grandgirard, F. Palermo, Philippe Ghendrih, T. Cartier-Michaud
Publikováno v: Physics of Plasmas
Physics of Plasmas, 2015, 22 (4), ⟨10.1063/1.4916770⟩
Physics of Plasmas, American Institute of Physics, 2015, 22 (4), ⟨10.1063/1.4916770⟩
Équipe 107 : Physique des plasmas chauds; International audience; One important issue in turbulence self-organization is the interplay between the Kelvin-Helmholtz (KH) instability and streamers and/or zonal flows. This question has been debated for
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e61790efb43107e2ba8ecc13828d3fbe
https://hal.science/hal-01285755
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