Zobrazeno 1 - 10
of 64
pro vyhledávání: '"S. Champeaux"'
Publikováno v:
Nonlinear Processes in Geophysics, Vol 6, Iss 3/4, Pp 169-178 (1999)
The envelope formalism for the description of a small-amplitude parallel-propagating Alfvén wave train is tested against direct numerical simulations of the Hall-MHD equations in one space dimension where kinetic effects are neglected. It turns out
Externí odkaz:
https://doaj.org/article/3cad9385823f43d0ae18163b308f8961
Autor:
Patrick Diamond, Mikhail Malkov, Andrei Smolyakov, Christopher Holland, T.S. Hahm, Kimitaka Itoh, Marshall N. Rosenbluth, Eun Jin Kim, Özgür D. Gürcan, Sanae I. Itoh, S. Champeaux, I. Gruzinov
Publikováno v:
Kim, EJ; Diamond, PH; Malkov, M; Hahm, TS; Itoh, K; Itoh, SI; et al.(2003). Non-perturbative models of intermittency in drift-wave turbulence: Towards a probabilistic theory of anomalous transport. Nuclear Fusion, 43(9), 961-968. doi: 10.1088/0029-5515/43/9/321. UC San Diego: Retrieved from: http://www.escholarship.org/uc/item/7mw00474
Nuclear Fusion, vol 43, iss 9
Nuclear Fusion, vol 43, iss 9
Two examples of non-perturbative models of intermittency in drift-wave (DW) turbulence are presented. The first is a calculation of the probability distribution function (PDF) of ion heat flux due to structures in ion temperature gradient turbulence.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a07f9c80baf5946a188c5d4c77edd576
https://doi.org/10.1088/0029-5515/43/9/321
https://doi.org/10.1088/0029-5515/43/9/321
Autor:
George Tynan, W. M. Nevins, Eun Jin Kim, Jeff Candy, Özgür D. Gürcan, S. Champeaux, Marshall N. Rosenbluth, Patrick Diamond, Christopher Holland, N. Crocker
Publikováno v:
Nuclear Fusion. 43:761-780
In this paper, we report on an integrated program of experimental, computational, and theoretical studies of sheared zonal flows and radially extended convective cells, with the aim of assessing the results of theory–experiment and theory–simulat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e966c3a0f48ce4c49a2bb2f9ad911df9
https://doi.org/10.1088/0029-5515/43/8/319
https://doi.org/10.1088/0029-5515/43/8/319
Autor:
S. Champeaux, Patrick Diamond
Publikováno v:
Physics Letters A. 288:214-219
The origin of anisotropic secondary flows, such as zonal flows and streamers, in drift wave turbulence is examined. A unified description including diffraction effects is given for zonal flow and streamer generation via envelope modulation of drift-w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::26a4c8a809f0b9af51ecfe77d9d80db2
https://doi.org/10.1016/s0375-9601(01)00549-7
https://doi.org/10.1016/s0375-9601(01)00549-7
Publikováno v:
Physics of Plasmas. 6:413-416
The influence of the dispersion magnitude on the dissipation of weakly nonlinear Alfven waves induced by transverse collapse is investigated using an envelope formalism. It is shown that when the dispersion is too small to enforce circular polarizati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7bb94935dd6c955c6efcdf5496c5b2dd
https://doi.org/10.1063/1.873296
https://doi.org/10.1063/1.873296
Publikováno v:
Nonlinear Processes in Geophysics, Vol 6, Iss 3/4, Pp 169-178 (1999)
Nonlinear Processes in Geophysics
Nonlinear Processes in Geophysics, European Geosciences Union (EGU), 1999, 6 (3/4), pp.169-178
Nonlinear Processes in Geophysics
Nonlinear Processes in Geophysics, European Geosciences Union (EGU), 1999, 6 (3/4), pp.169-178
The envelope formalism for the description of a small-amplitude parallel-propagating Alfvén wave train is tested against direct numerical simulations of the Hall-MHD equations in one space dimension where kinetic effects are neglected. It turns out
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ed6cb002d62ea96118ce4b3fea753d79
http://www.nonlin-processes-geophys.net/6/169/1999/npg-6-169-1999.pdf
http://www.nonlin-processes-geophys.net/6/169/1999/npg-6-169-1999.pdf
Publikováno v:
Physics of Plasmas. 5:100-111
While in the presence of dispersion the circular polarization of a weakly nonlinear Alfven wave-train is preserved, and the envelope dynamics governed by the usual scalar nonlinear Schrodinger equation, this is no longer the case in the small dispers
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::72694168e8b119926c74fe2807de3153
https://doi.org/10.1063/1.872678
https://doi.org/10.1063/1.872678
Autor:
S. Champeaux, Ph. Gouard, H. Bottollier-Curtet, P. Dumortier, R. Koch, V. Kyrytsya, A. Messiaen, Cynthia K. Phillips, James R. Wilson
Publikováno v:
AIP Conference Proceedings.
Up to now, classical “water” loads have been used for low power testing of ITER ICRH prototype or mock‐up antennas . A fair description of the antenna frequency response is obtained excepted for the phasing (0 π 0 π). High dielectric loads ar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ec0cfc9a5c7a921413fbb2c0553f1852
https://doi.org/10.1063/1.3664924
https://doi.org/10.1063/1.3664924
Publikováno v:
Physical Review E. 77
Three-dimensional numerical simulations and direct experimental measurements of the multifilamentation of femtosecond laser pulses propagating in air are quantitatively compared. Agreement is obtained in terms of the evolution of the filamentation pa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0d348a45a804e4ec09a122c89427999f
https://doi.org/10.1103/physreve.77.036406
https://doi.org/10.1103/physreve.77.036406
Autor:
S. Champeaux, Rachel Nuter, Luc Bergé, Jean-Pierre Wolf, Laurent Guyon, François Courvoisier, Véronique Boutou, Kim M. Hajek, Antoine Vinçotte
Publikováno v:
Applied Physics B-Laser and Optics
Applied Physics B-Laser and Optics, Springer Verlag, 2008, 90 (3-4), pp.383-390. ⟨10.1007/s00340-007-2914-1⟩
Applied Physics. B, Lasers and Optics, Vol. 90, No 3-4 (2008) pp. 383-390
Applied Physics B-Laser and Optics, 2008, 90 (3-4), pp.383-390. ⟨10.1007/s00340-007-2914-1⟩
Applied Physics B-Laser and Optics, Springer Verlag, 2008, 90 (3-4), pp.383-390. ⟨10.1007/s00340-007-2914-1⟩
Applied Physics. B, Lasers and Optics, Vol. 90, No 3-4 (2008) pp. 383-390
Applied Physics B-Laser and Optics, 2008, 90 (3-4), pp.383-390. ⟨10.1007/s00340-007-2914-1⟩
International audience; Multiple filamentation in a high concentration solution of coumarin 153 in ethanol is studied. It is shown that the output filament pattern may be controlled by placing diffractive elements (circular aperture, edge) in the inp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e32c37cc9f1b7d042b1bf76e8360f396
https://hal.archives-ouvertes.fr/hal-00391855
https://hal.archives-ouvertes.fr/hal-00391855
