ABSTRACT
Recurrences are close returns of a given state in a time series, and can be used to identify different dynamical regimes and other related phenomena, being particularly suited for analyzing experimental data. In this work, we use recurrence quantification analysis to investigate dynamical patterns in scalar data series obtained from measurements of floating potential and ion saturation current at the plasma edge of the Tokamak Chauffage Alfvén Brésilien [R. M. O. Galvão et al., Plasma Phys. Controlled Fusion 43, 1181 (2001)]. We consider plasma discharges with and without the application of radial electric bias, and also with two different regimes of current ramp. Our results indicate that biasing improves confinement through destroying highly recurrent regions within the plasma column that enhance particle and heat transport.
ACKNOWLEDGMENTS
This work was made possible with partial financial help from FAPESP, CNPq, Fundação Araucária, CAPES, FINEP-RNP (Brazilian Fusion Network), and Contract No. SFB 555 (DFG), Université de Provence and PACA (Provence Alpes Côte d'Azur) Region. Z.O.G.-F. is the recipient of a bourse d'accueil de la Ville de Marseille.
- 1. W. Horton, Rev. Mod. Phys. 71, 735 (1999). https://doi.org/10.1103/RevModPhys.71.735, Google ScholarCrossref
- 2. A. J. Wootton, B. A. Carreras, H. Matsumoto, K. McGuire, W. A. Peebles, Ch. P. Ritz, P. W. Terry, and S. J. Zweben, Phys. Fluids B 2, 2879 (1990). https://doi.org/10.1063/1.859358, Google ScholarScitation, ISI
- 3. C. Hidalgo, C. Alejaldre, A. Alonso, J. Alonso, L. Almoguera, F. de Aragón, E. Ascasíbar, A. Baciero, R. Balbín, E. Blanco, J. Botija, B. Brañas, E. Calderón, A. Cappa, J. A. Carmona, R. Carrasco, F. Castejón, J. R. Cepero, A. A. Chmyga, J. Doncel, N. B. Dreval, S. Eguilior, L. Eliseev, T. Estrada, J. A. Ferreira, A. Fernández, J. M. Fontdecaba, C. Fuentes, A. García, I. García-Cortés, B. Gonçalves, J. Guasp, J. Herranz, A. Hidalgo, R. Jiménez, J. A. Jiménez, D. Jiménez-Rey, I. Kirpitchev, S. M. Khrebtov, A. D. Komarov, A. S. Kozachok, L. Krupnik, F. Lapayese, M. Liniers, D. López-Bruna, A. López-Fraguas, J. López-Rázola, A. López-Sánchez, E. de la Luna, G. Marcon, R. Martín, K. J. McCarthy, F. Medina, M. Medrano, A. V. Melnikov, P. Méndez, B. van Milligen, I. S. Nedzelskiy, M. Ochando, O. Orozco, J. L. de Pablos, L. Pacios, I. Pastor, M. A. Pedrosa, A. de la Peña, A. Pereira, A. Petrov, S. Petrov, A. Portas, D. Rapisarda, L. Rodríguez-Rodrigo, E. Rodríguez-Solano, J. Romero, A. Salas, E. Sánchez, J. Sánchez, M. Sánchez, K. Sarksian, C. Silva, S. Schchepetov, N. Skvortsova, F. Tabarés, D. Tafalla, A. Tolkachev, V. Tribaldos, I. Vargas, J. Vega, G. Wolfers, and B. Zurro, Nucl. Fusion 45, S266 (2005). https://doi.org/10.1088/0029-5515/45/10/S22, Google ScholarCrossref
- 4. A. J. Wootton, M. E. Austin, R. D. Bengtson, J. A. Boedo, R. V. Bravenec, D. L. Brower, J. Y. Chen, G. Cima, P. H. Diamond, R. D. Durst, P. H. Edmonds, S. P. Fan, M. S. Foster, J. C. Forster, R. Gandy, K. W. Gentle, R. L. Hickok, Y. X. Hey, S. K. Kim, Y. J. Kim, H. Lin, N. C. Luhmann, S. C. McCool, W. H. Miner, A. Ouroua, D. M. Patterson, W. A. Peebles, P. E. Phillips, B. Richards, C. P. Ritz, T. L. Rhodes, D. W. Ross, W. L. Rowan, P. M. Schoch, D. Sing, E. J. Synakowski, P. W. Terry, K. W. Wenzel, J. C. Wiley, X. Z. Yang, X. H. Yu, Z. Zhang, and S. B. Zheng, Plasma Phys. Controlled Fusion 30, 1479 (1988). https://doi.org/10.1088/0741-3335/30/11/010, Google ScholarCrossref
- 5. M. Baptista, I. L. Caldas, M. V. A. P. Heller, and A. A. Ferreira, Phys. Plasmas 10, 1283 (2003). https://doi.org/10.1063/1.1561612, Google ScholarScitation
- 6. P. J. Morrison and B. A. Shadwick, Commun. Nonlinear Sci. Numer. Simul. 13, 130 (2008). https://doi.org/10.1016/j.cnsns.2007.04.005, Google ScholarCrossref
- 7. B. N. Kuvshinov and T. J. Schep, Phys. Rev. Lett. 84, 650 (2000). https://doi.org/10.1103/PhysRevLett.84.650, Google ScholarCrossref
- 8. Y. Xu, R. R. Weynants, S. Jachmich, M. Van Schoor, M. Vergote, P. Peleman, M. W. Jakubowski, M. Mitri, D. Reiser, B. Unterberg, and K. H. Finken, Phys. Rev. Lett. 97, 165003 (2006). https://doi.org/10.1103/PhysRevLett.97.165003, Google ScholarCrossref
- 9. N. Marwan and J. Kurths, Phys. Lett. A 302, 299 (2002). https://doi.org/10.1016/S0375-9601(02)01170-2, Google ScholarCrossref
- 10. Z. O. Guimarães-Filho, I. L. Caldas, R. L. Viana, J. Kurths, I. C. Nascimento, and Yu. K. Kuznetsov, Phys. Lett. A 372, 1088 (2008). https://doi.org/10.1016/j.physleta.2007.07.088, Google ScholarCrossref
- 11. J. P. Eckmann, S. O. Kamphorst, and D. Ruelle, Europhys. Lett. 4, 973 (1987). https://doi.org/10.1209/0295-5075/4/9/004, Google ScholarCrossref
- 12. M. Casdagli, Physica D 108, 12 (1997). https://doi.org/10.1016/S0167-2789(97)82003-9, Google ScholarCrossref
- 13. C. L. Webber and J. P. Zbilut, J. Appl. Physiol. 76, 965 (1994). Google ScholarCrossref
- 14. N. Marwan, M. H. Trauth, M. Vuille, and J. Kurths, Clim. Dyn. 21, 317 (2003). https://doi.org/10.1007/s00382-003-0335-3, Google ScholarCrossref
- 15. J. A. Hołyst, M. Zebrowska, and K. Urbanowicz, Eur. Phys. J. B 20, 531 (2001). https://doi.org/10.1007/PL00011109, Google ScholarCrossref
- 16. J. Kurths, U. Schwarz, C. P. Sonett, and U. Parlitz, Nonlinear Processes Geophys. 1, 72 (1994); Google ScholarCrossref
N. Marwan, M. Thiel, and N. R. Nowaczyk, Nonlinear Processes Geophys. 9, 325 (2002). , Google ScholarCrossref - 17. N. Marwan, N. Wessel, U. Meyerfeldt, A. Schirdewan, and J. Kurths, Phys. Rev. E 66, 026702 (2002). https://doi.org/10.1103/PhysRevE.66.026702, Google ScholarCrossref
- 18. T. K. March, S. C. Chapman, and R. O. Dendy, Geophys. Res. Lett. 32, L04101, doi:10.1029/2004GL021677 (2005) https://doi.org/10.1029/2004GL021677; Google ScholarCrossref
T. K. March, S. C. Chapman, and R. O. Dendy,Physica D 200, 171 (2005). https://doi.org/10.1016/j.physd.2004.11.002, , Google ScholarCrossref - 19. R. O. Dendy and S. C. Chapman, Plasma Phys. Controlled Fusion 48, B313 (2006). https://doi.org/10.1088/0741-3335/48/12B/S30, Google ScholarCrossref
- 20. R. M. O. Galvão, V. Bellintani, Jr., R. D. Bengtson, A. G. Elfimov, J. I. Elizondo, A. N. Fagundes, A. A. Ferreira, A. M. M. Fonseca, Yu. K. Kuznetsov, E. A. Lerche, I. C. Nascimento, L. F. Ruchko, W. P. de Sá, E. A. Saettone, E. K. Sanada, J. H. F. Severo, R. P. da Silva, V. S. Tsypin, O. C. Usuriaga, and A. Vannucci, Plasma Phys. Controlled Fusion 43, A299 (2001). https://doi.org/10.1088/0741-3335/43/12A/323, Google ScholarCrossref
- 21. A. A. Ferreira, M. V. A. P. Heller, I. L. Caldas, E. A. Lerche, L. F. Ruchko, and L. A. Baccalá, Plasma Phys. Controlled Fusion 46, 669 (2004). https://doi.org/10.1088/0741-3335/46/4/007, Google ScholarCrossref
- 22. W. Horton and A. Hasegawa, Chaos 4, 227 (1994). https://doi.org/10.1063/1.166049, Google ScholarScitation
- 23. G. Z. dos Santos Lima, Z. O. Guimarães-Filho, I. L. Caldas, I. C. Nascimento, Yu. K. Kuznetsov, A. M. Batista, S. R. Lopes, and R. L. Viana, Phys. Plasmas 16, 042508 (2009). https://doi.org/10.1063/1.3099701, Google ScholarScitation
- 24. I. C. Nascimento, Y. K. Kuznetsov, J. H. F. Severo, A. M. M. Fonseca, A. Elfimov, V. Bellintani, M. Machida, M. V. A. P. Heller, R. M. O. Galvão, E. K. Sanada, and J. I. Elizondo, Nucl. Fusion 45, 796 (2005). https://doi.org/10.1088/0029-5515/45/8/005, Google ScholarCrossref
- 25. I. C. Nascimento, Yu. K. Kuznetsov, Z. O. Guimarães-Filho, I. El Chamaa-Neto, O. Usuriaga, A. M. M. Fonseca, R. M. O. Galvo, I. L. Caldas, J. H. F. Severo, I. B. Semenov, C. Ribeiro, M. V. A. P. Heller, V. Bellintani, J. I. Elizondo, and E. Sanada, Nucl. Fusion 47, 1570 (2007). https://doi.org/10.1088/0029-5515/47/11/019, Google ScholarCrossref
- 26. F. Takens, in Dynamical Systems and Turbulence, Warwick 1980, Vol. 898, edited by D. A. Rand and L. S. Young (Springer-Verlag, Berlin, 1981). Google Scholar
- 27. H. Kantz and T. Schreiber, Nonlinear Time Series Analysis (Cambridge University Press, Cambridge, 1997). Google Scholar
- 28. F. M. Atay and Y. Altintas, Phys. Rev. E 59, 6593 (1999). https://doi.org/10.1103/PhysRevE.59.6593, Google ScholarCrossref
- 29. M. Thiel, M. C. Romano, and J. Kurths, Phys. Lett. A 330, 343 (2004). https://doi.org/10.1016/j.physleta.2004.07.050, Google ScholarCrossref
- 30. J. P. Zbilut and C. L. Webber, Jr., Phys. Lett. A 171, 199 (1992). https://doi.org/10.1016/0375-9601(92)90426-M, Google ScholarCrossref
- 31. N. Marwan, M. C. Romano, M. Thiel, and J. Kurths, Phys. Rep. 438, 237 (2007). https://doi.org/10.1016/j.physrep.2006.11.001, Google ScholarCrossref
- 32. Freely available software for obtaining RPs and performing RQA is listed in http://www.recurrence-plot.tk/programmes.php. Google Scholar
- 33. L. L. Trulla, A. Giuliani, J. P. Zbilut, and C. L. Webber, Jr., Phys. Lett. A 223, 255 (1996). https://doi.org/10.1016/S0375-9601(96)00741-4, Google ScholarCrossref
- 34. E. Ott, Chaos in Dynamical Systems (Cambridge University Press, Cambridge, 1992). Google Scholar
- 35. S. J. Camargo, B. D. Scott, and D. Biskamp, Phys. Plasmas 3, 3912 (1996). https://doi.org/10.1063/1.871580, Google ScholarScitation
- 36. A. Hasegawa and M. Wakatani, Phys. Rev. Lett. 50, 682 (1983). https://doi.org/10.1103/PhysRevLett.50.682, Google ScholarCrossref
- 37. C. Rodrigues Neto, Z. O. Guimaraes-Filho, I. L. Caldas, I. C. Nascimento, and Yu. K. Kuznetsov, Phys. Plasmas 15, 082311 (2008). https://doi.org/10.1063/1.2973175, Google ScholarScitation
- 38. S. Schinkel, N. Marwan, O. Dimyer, and J. Kurths, Phys. Lett. A 373, 2245 (2009). https://doi.org/10.1016/j.physleta.2009.04.045, Google ScholarCrossref
- 39. M. J. Schaffer, J. E. Menard, M. P. Aldan, J. M. Bialek, T. E. Evans, and R. A. Moyer, Nucl. Fusion 48, 024004 (2008). https://doi.org/10.1088/0029-5515/48/2/024004, Google ScholarCrossref
- 40. K. H. Finken, T. E. Evans, D. Reiter, K. H. Spatschek, and W. Suttrop, Nucl. Fusion 48, 024001 (2008). https://doi.org/10.1088/0029-5515/48/2/024001, Google ScholarCrossref
- 41. S. E. Sharapov, F. M. Poli, and JET-EFDA Contributors, in 35th EPS Conference on Plasma Physics, Europhysics Conference Abstracts Vol. 32D, Hersonissos, 2008, edited by P. Lalousis and S. Moustaizis (European Physical Society, Lausanne, 2008), p. 4–071. Google Scholar
Please Note: The number of views represents the full text views from December 2016 to date. Article views prior to December 2016 are not included.

