Journal of Fusion Energy

, Volume 31, Issue 3, pp 279–283 | Cite as

Toroidal High-Density Singularity in a Small Plasma Focus

  • Federico Casanova
  • Ariel Tarifeño-Saldivia
  • Felipe Veloso
  • Cristian Pavez
  • Alejandro ClausseEmail author
  • Leopoldo SotoEmail author
Original Research


A toroidal singularity in the current sheet of a Plasma Focus operated at tens of joules (PF-50J) leading to the formation of a high-density singularity on the plasma sheath was observed on interferographic images of discharges in 6 mbar of Deuterium gas. The phenomenon was numerically simulated by means of the 2D numerical code Cshock, which was able to reproduce the plasma kinetics and the evolution of the electrical variables, as well as the formation, movement and density of the plasmoid structure.


Plasma focus z-pinch Small fusion devices 



This work was supported by the grant P4 Project “Center for research and applications in plasma physics and pulsed power technology”, PBCT-CONICYT Chile ACT 26 grant, and by a Postdoctoral PBCT-CONICYT Chile PSD-01 grant; and the Argentine Atomic Energy Commission and CONICET. A. Tarifeño-Saldivia thanks to Universidad de Concepción, Chile, for the support during his Ph.D. thesis.


  1. 1.
    S. Lee, M. Eissa, A. Gholap, K. Kwek, S. Mulyodrono, S. Sapru, A. Smith, S. Suriadi, T. Tou, W. Usada, C. Wong, M. Zakaullah, Singapore J. Phys. 3, 75–82 (1986)Google Scholar
  2. 2.
    H. Bruzzone, J. Martinez, J. Tech. Phys. 40, 169–172 (1999)Google Scholar
  3. 3.
    H. Bruzzone, J. Martinez, Plasma Sources Sci. Technol. 10, 471–477 (2001)ADSCrossRefGoogle Scholar
  4. 4.
    F. Casanova, C. Moreno, A. Clausse, Plasma Phys. Controlled Fusion 47, 1239–1250 (2005)ADSCrossRefGoogle Scholar
  5. 5.
    C. Moreno, F. Casanova, G. Correa, A. Clausse, Plasma Phys. Controlled Fusion 45, 1989–1999 (2003)ADSCrossRefGoogle Scholar
  6. 6.
    P. Silva, L. Soto, J. Moreno, G. Sylvester, M. Zambra, L. Altamirano, H. Bruzzone, A. Clausse, C. Moreno, Rev. Sci. Instrum. 73, 2583–2587 (2002)ADSCrossRefGoogle Scholar
  7. 7.
    P. Silva, L. Soto, W. Kies, J. Moreno, Plasma Sources Sci. Technol. 13, 329–332 (2004)ADSCrossRefGoogle Scholar
  8. 8.
    L. Soto, P. Silva, J. Moreno, M. Zambra, W. Kies, R. Mayer, A. Clausse, L. Altamirano, C. Pavez, L. Huerta, J. Phys. D Appl. Phys. 41, 205215 (2008). (7 pp)ADSCrossRefGoogle Scholar
  9. 9.
    A. Tarifeño, C. Pavez, J. Moreno, L. Soto, IEEE Trans. Plasma Sci. 39, 756–760 (2011)ADSCrossRefGoogle Scholar
  10. 10.
    Y. Ostrovsky, M. Butusov, G. Ostrovskaya, Interferometry by Holography (Springer-Verlag, Berlin, 1980)Google Scholar
  11. 11.
    S. Lee, in Radiations in Plasmas, ed. by B. McNamara (World Scientific, Singapore, 1984), pp. 978–87Google Scholar
  12. 12.
    J. González, P. Florido, H. Bruzzone, A. Clausse, IEEE Trans. Plasma Sci. 32, 1383–1391 (2004)ADSCrossRefGoogle Scholar
  13. 13.
    J. González, F. Brollo, A. Clausse, IEEE Trans. Plasma Sci. 37, 2178–2185 (2009)ADSCrossRefGoogle Scholar
  14. 14.
    J. González, M. Barbaglia, F. Casanova, A. Clausse, Brazil. J. Phys. 39, 633–637 (2009)Google Scholar
  15. 15.
    L. Soto, C. Pavez, A. Tarifeño, J. Moreno, F. Veloso, Plasma Sour. Sci. Technol. 19, 055017 (2010). (9 pp)ADSCrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Federico Casanova
    • 1
  • Ariel Tarifeño-Saldivia
    • 2
    • 3
  • Felipe Veloso
    • 2
    • 3
  • Cristian Pavez
    • 2
    • 3
  • Alejandro Clausse
    • 1
    Email author
  • Leopoldo Soto
    • 2
    • 3
    Email author
  1. 1.CNEA-CONICET and Universidad Nacional del CentroTandilArgentina
  2. 2.CCHEN, Comisión Chilena de Energía NuclearSantiagoChile
  3. 3.P4, Center for Research and Applications in Plasma Physics and Pulsed PowerSantiago-CuricóChile

Personalised recommendations