TJ-II:Impurity transport

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CCD image of ethylene injection from the limiter in Hα light. The silhouette of the limiter shape is seen at the bottom. In the enlarged image, the glow from three embedded Langmuir probes is visible

The transport of impurities has been studied at TJ-II. [1] [2]

Impurity injection methods

Analysis methods

References

  1. K.J. McCarthy et al, Impurity behaviour during externally induced radial electric fields in the TJ-II stellarator, Proc. 14th International Stellarator Workshop (Greifswald, 2003) P.We14
  2. K.J. McCarthy et al, Comparison of Impurity Transport in Different Magnetic Configurations, Proc. 17th ITC / 16th ISHW (Toki, 2007) I-18
  3. B. Zurro et al, Study of impurity transport injected by laser ablation in the TJ-II, Proc. 29th EPS Conf. Plasma Phys. (Montreux, 2002) ECA Vol. 26B, P5.025
  4. B. Zurro et al, Transport Analysis of Impurities Injected by Laser Ablation in the TJ-II Stellarator, Proc. 30th EPS Conf. Plasma Phys. (St. Petersburg, 2003) ECA Vol. 27A, P-2.79
  5. I. García-Cortés et al, Fuelling efficiency of hydrocarbons in TJ-II plasmas, J. Nucl. Mat. 337-339 (2005) 441-445
  6. F.L. Tabarés et al, Injection of hydrogen and ethylene at the plasma edge of TJ-II: A comparative study, Proc. 32nd EPS Conference on Plasma Phys. (Tarragona, 2005), ECA Vol. 29C, P-4.008
  7. B. Zurro et al, Impurity transport and confinement in the TJ-II Stellarator, Proc. 20th Fusion Energy Conf. (Villamoura, 2004) EX/P6-32
  8. B. Zurro et al, Method to deduce local impurity transport quantities from the evolution of tomographically reconstructed bolometer signals during tracer injection at TJ-II, Rev. Sci. Instrum. 75 (2004) 4231