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Toroidal High-Density Singularity in a Small Plasma Focus

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Abstract

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.

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Acknowledgments

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.

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Authors and Affiliations

  1. CNEA-CONICET and Universidad Nacional del Centro, 7000, Tandil, Argentina

    Federico Casanova & Alejandro Clausse

  2. CCHEN, Comisión Chilena de Energía Nuclear, Casilla 188-D, Santiago, Chile

    Ariel Tarifeño-Saldivia, Felipe Veloso, Cristian Pavez & Leopoldo Soto

  3. P4, Center for Research and Applications in Plasma Physics and Pulsed Power, Santiago-Curicó, Chile

    Ariel Tarifeño-Saldivia, Felipe Veloso, Cristian Pavez & Leopoldo Soto

Authors
  1. Federico Casanova
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  2. Ariel Tarifeño-Saldivia
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  3. Felipe Veloso
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  4. Cristian Pavez
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  5. Alejandro Clausse
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  6. Leopoldo Soto
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Correspondence to Alejandro Clausse or Leopoldo Soto.

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Casanova, F., Tarifeño-Saldivia, A., Veloso, F. et al. Toroidal High-Density Singularity in a Small Plasma Focus. J Fusion Energ 31, 279–283 (2012). https://doi.org/10.1007/s10894-011-9469-1

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  • DOI: https://doi.org/10.1007/s10894-011-9469-1

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