Zobrazeno 1 - 10
of 44
pro vyhledávání: '"J. H. F. Severo"'
Publikováno v:
Plasma Sources Science and Technology. 31:125010
In this work, we experimentally and theoretically study mechanisms of molecular dissociation and atomic excitation occurring in a flowing nitrogen DC discharge and its post-discharge. A specific discharge experimental condition for the pink afterglow
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::df3c38954d5d7e5760651cd065de4ce5
https://doi.org/10.1088/1361-6595/acacc2
https://doi.org/10.1088/1361-6595/acacc2
Autor:
Ricardo Magnus Osorio Galvao, N B Andrade, M Y Ikeda, Michael Tendler, T Fernandes, G. P. Canal, G. Ronchi, J. H. F. Severo, Ivan Cunha Nascimento, Magno Pinto Collares
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
An overview of intrinsic plasma rotation studies in Ohmic L-mode discharges carried out in the Tokamak Chauffage Alfvén Brésilien (TCABR) tokamak is presented. Measurements of plasma poloidal and toroidal rotation, and a comparison against neoclass
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::21d58ed91e1039eb00d4a0bfbc6babbd
Publikováno v:
Journal of Physics D: Applied Physics. 54:505205
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::952ff7f7c79d1e7f4064a7e50e534392
https://doi.org/10.1088/1361-6463/ac276f
https://doi.org/10.1088/1361-6463/ac276f
Autor:
A.O. Santos, J.G. Ferreira, M. C. de Andrade, Ricardo Magnus Osorio Galvao, F. Kassab, G. P. Canal, Ivan Cunha Nascimento, J.R.C. Piqueira, W.P. de Sá, J. H. F. Severo, W. Komatsu
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
An upgrade is being conducted on the Tokamak a Chauffage Alfven Bresilien (TCABR), which is a small tokamak (R0 = 0.62 m and a = 0.2 m) operated at the University of Sao Paulo, Brazil. An important part of this upgrade is the installation of addition
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3bd02c4ee877a69c012cec77d5f664fc
https://doi.org/10.1016/j.fusengdes.2020.111698
https://doi.org/10.1016/j.fusengdes.2020.111698
Publikováno v:
Brazilian Journal of Physics. 45:427-430
In this work, we present results of electron temperature (T e ) and density (n e ) measurements obtained in Tokamak Chauffage Alfven Bresilien (TCABR) tokamak using visible spectroscopy from CVI line emissions which occurs mainly near the center of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::51a42a84f21ba27e2a7ad5de967c5491
https://doi.org/10.1007/s13538-015-0331-1
https://doi.org/10.1007/s13538-015-0331-1
Publikováno v:
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
The behavior of the intrinsic toroidal rotation of the plasma column during the growth and eventual saturation of m/n = 2/1 magnetic islands, triggered by programmed density rise, has been carefully investigated in disruptive discharges in TCABR. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::56f7d0396b6d110cea8bb6120a72861b
https://repositorio-aberto.up.pt/handle/10216/83774
https://repositorio-aberto.up.pt/handle/10216/83774
Autor:
J. H. F. Severo, Amanda Mazza Cruz de Oliveira, A P Reis, T Cabr Team, W.P. de Sá, Ricardo Magnus Osorio Galvao, Zwinglio Guimarães-Filho, G. Grenfell, W. A. H. Baquero, Juan Iraburu Elizondo, Ivan Cunha Nascimento, Diego Sales de Oliveira, G. Ronchi
Publikováno v:
Physics of Plasmas. 25:072301
The transition from the ohmic heating L-mode to the H-mode in the tokamak TCABR induced by an external electrode biasing is addressed in this work. A gradual improvement in the plasma confinement with the biasing voltage was observed as a result of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7e762471ad9143150d3f91ac4cf794f3
https://doi.org/10.1063/1.5029561
https://doi.org/10.1063/1.5029561
Autor:
Iberê L. Caldas, Edson Kenzo Sanada, O. C. Usuriaga, C. Ribeiro, Ricardo Magnus Osorio Galvao, M. V. A. P. Heller, V. Bellintani, Juan Iraburu Elizondo, I. El Chamaa-Neto, Ivan Cunha Nascimento, J. H. F. Severo, I.B. Semenov, A. M. M. Fonseca, Yu K Kuznetsov, Zwinglio Guimarães-Filho
Publikováno v:
Nuclear Fusion. 47:1570-1576
Two reproducible regimes of tokamak operation, with excitation or suppression of MHD activity can be obtained using a voltage-biased electrode inside the edge of the TCABR tokamak. The experiment was carried out adjusting the tokamak parameters to ob
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::adc0a13a8db8aac8873fac39acab290c
https://doi.org/10.1088/0029-5515/47/11/019
https://doi.org/10.1088/0029-5515/47/11/019
Plasma rotation has an important play in stabilization of MHD modes and reducing turbulenttransport of particles and energy. Because in fusion reactors it is expected the torque provided byexternal sources will be small, the intrinsic (or spontaneous
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______1406::9b08dd90d3fe0b26cfca883550d6b3df
https://repositorio-aberto.up.pt/handle/10216/79090
https://repositorio-aberto.up.pt/handle/10216/79090
Autor:
J. H. F. Severo, A. M. M. Fonseca, Edson Kenzo Sanada, Ricardo Magnus Osorio Galvao, Munemasa Machida, Artour G Elfimov, V. Bellintani, Ivan Cunha Nascimento, Juan Iraburu Elizondo, Yu K Kuznetsov, M. V. A. P. Heller
Publikováno v:
Nuclear Fusion. 45:796-803
Experimental data obtained on the TCABR tokamak (R = 0.61?m, a = 0.18?m) with an electrically polarized electrode, placed at r = 0.16?m, is reported in this paper. The experiment was performed with plasma current of 90?kA (q = 3.1) and hydrogen gas i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::80ddd44fd2f7c959ab083c9a6df55a59
https://doi.org/10.1088/0029-5515/45/8/005
https://doi.org/10.1088/0029-5515/45/8/005