CV Lattes
ResearcherID
ORCID
Ministério da Defesa (Brasil). Instituto Tecnológico de Aeronáutica (ITA). Divisão de Ciências Fundamentais (IEF) (Institutional affiliation for the last research proposal) Birthplace: Brazil
graduate at Fisica from Pontifícia Universidade Católica de São Paulo (1981), master's at Aerospace Engineering from Instituto Nacional de Pesquisas Espaciais (1986) and ph.d. at Physic from Instituto Tecnológico de Aeronáutica (1992). Has experience in Physic, focusing on Plasma Physics and Electrical Discharges, acting on the following subjects: ergodic magnetic limiter, transport barrier, particle-in-cell simulation, dc discharge with argon and chlorine and reconexão das linhas de campo magnético. (Source: Lattes Curriculum)
| News published in Agência FAPESP Newsletter about the researcher |
| TITULO |
| Articles published in other media outlets (0 total): |
| More itemsLess items |
| VEICULO: TITULO (DATA) |
| VEICULO: TITULO (DATA) |
Transport barriers of magnetic field lines play an important role in tokamak plasmas. Through devices that cause external perturbations, which may be an ergodic limiter, which disturbs rational surfaces at the edge of the plasma column, it is possible to produce a chaotic layer. Using a Hamiltonian formulation, we investigate the escape of the magnetic field lines towards the walls of the…
Transport barriers in magnetic field lines have a significant role in fusion tokamak area. Through devices that cause external perturbations, which may be an ergodic limiter, which cause perturbation in surfaces at the edge of the plasma column, the formation of a stochastic layer is possible. We intend to take a methodology described in previous works to include the effects of the plasma…
Transport barriers of the magnetic field lines have an important role in the controlled fusion in tokamaks. Through the devices that cause external perturbations, which can be an ergodic magnetic limiter, which perturbs rational surfaces at the edge of the plasma column, it is possible to form a layer with chaotic lines in this region. With non-monotonic safety factor profile we have the …
(Only some records are available in English at this moment)
In the Plan of Action 2007 - 2010 MCT is expected to invest in future technologies within the Brazilian Nuclear Program, in particular nuclear fusion. To implement this action, the Ministry created the National Network of Fusion - RNF, with funding initially provided through the project of order of FINEP, which is in final stage of implementation. The agreement Brazil - EURATOM was establ…
| 8 / 5 | Completed research grants |
| 1 / 1 | Completed scholarships in Brazil |
| 2 / 0 | Completed scholarships abroad |
| 11 / 6 | All research grants and scholarships |
| Associated processes | |
FRAILE, JR., ANDRE CARLOS; ROBERTO, MARISA; CALDAS, IBERE LUIZ; LOPES MARTINS, CAROLINE GAMEIRO. Plasma Response to Resonant Magnetic Perturbations in Large Aspect Ratio Tokamaks. IEEE TRANSACTIONS ON PLASMA SCIENCE, v. 45, n. 11, p. 2906-2912, NOV 2017. (15/16471-8, 11/19296-1)
TONELI, D. A.; PESSOA, R. S.; ROBERTO, M.; GUDMUNDSSON, J. T.. A volume averaged global model study of the influence of the electron energy distribution and the wall material on an oxygen discharge. JOURNAL OF PHYSICS D-APPLIED PHYSICS, v. 48, n. 49, DEC 16 2015. (13/03401-6)
ROSALEM, K. C.; ROBERTO, M.; CALDAS, I. L.. Drift-wave transport in the velocity shear layer. Physics of Plasmas, v. 23, n. 7, JUL 2016. (15/16471-8, 11/19296-1)
MARTINS, CAROLINE G. L.; ROBERTO, M.; CALDAS, I. L.. Delineating the magnetic field line escape pattern and stickiness in a poloidally diverted tokamak. Physics of Plasmas, v. 21, n. 8, AUG 2014. (10/13162-0, 13/03401-6)
OSORIO, L. A.; ROBERTO, M.; CALDAS, I. L.; VIANA, R. L.; ELSKENS, Y.. Onset of internal transport barriers in tokamaks. Physics of Plasmas, v. 28, n. 8, AUG 2021. (18/14435-2, 18/03211-6, 20/01399-8)
TONELI, D. A.; PESSOA, R. S.; ROBERTO, M.; GUDMUNDSSON, J. T.. On the formation and annihilation of the singlet molecular metastables in an oxygen discharge. JOURNAL OF PHYSICS D-APPLIED PHYSICS, v. 48, n. 32, AUG 19 2015. (13/03401-6)
MARTINS, CAROLINE G. L.; ROBERTO, MARISA; CALDAS, IBERE L.. Magnetic Field Line Stickiness in Tokamaks. IEEE TRANSACTIONS ON PLASMA SCIENCE, v. 42, n. 10, 1, SI, p. 2764-2765, OCT 2014. (10/13162-0, 13/03401-6)
ROBERSON, GERALDO; ROBERTO, MARISA; CALDAS, IBERE LUIZ; KROETZ, TIAGO; VIANA, RICARDO LUIZ. Shaping Diverted Plasmas With Symplectic Maps. IEEE TRANSACTIONS ON PLASMA SCIENCE, v. 45, n. 3, p. 356-363, MAR 2017. (15/16471-8, 11/19296-1)
ROSALEM, K. C.; ROBERTO, M.; CALDAS, I. L.. Influence of the electric and magnetic shears on tokamak transport. NUCLEAR FUSION, v. 54, n. 6, JUN 2014. (13/03401-6, 11/19296-1)
DE OLIVEIRA, LUIS C.; MARTINS, CAROLINE G. L.; ROBERTO, M.; CALDAS, I. L.; EGYDIO DE CARVALHO, R.. Robust tori-like Lagrangian coherent structures. PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS, v. 391, n. 24, p. 6611-6616, DEC 15 2012. (10/16666-0, 10/20276-2)
TONELI, D. A.; PESSOA, R. S.; ROBERTO, M.; GUDMUNDSSON, J. T.. A global model study of low pressure high density CF4 discharge. PLASMA SOURCES SCIENCE & TECHNOLOGY, v. 28, n. 2, FEB 2019. (15/16471-8, 18/01265-1)
MARCUS, F. A.; ROBERTO, M.; CALDAS, I. L.; ROSALEM, K. C.; ELSKENS, Y.. Influence of the radial electric field on the shearless transport barriers in tokamaks. Physics of Plasmas, v. 26, n. 2, FEB 2019. (15/16471-8, 11/19296-1)
FRAILE JUNIOR, ANDRE CARLOS; ROBERTO, MARISA; CALDAS, IBERE LUIZ. Plasma Response to Resonant Perturbations at Tokamak Edge. Brazilian Journal of Physics, v. 48, n. 4, p. 426-432, AUG 2018. (15/16471-8, 11/19296-1)