Behavior of impurity ion velocities during the pulsed poloidal current drive in the Madison Symmetric Torus reversed-field pinch

Hajime Sakakita, Darren Craig, Jay K. Anderson, Ted M. Biewer, Stephen D. Terry, Brett E. Chapman, Daniel J. Den-Hartog, Stewart C. Prager

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

We report on passive measurements of impurity ion velocities during the pulsed poloidal current drive (PPCD) in the Madison Symmetric Torus reversed-field pinch. During PPCD, the electron temperature increased and a sudden reduction of magnetic fluctuations was observed. For this change, we have studied whether plasma velocity is affected. Plasma rotation is observed to decrease during PPCD. From measurements of line intensities for several impurities at 10 poloidal chords, it is found that the impurity line emission shifts outward. The ion temperature of impurities is reasonably connected to that measured by charge exchange recombination spectroscopy from core to edge.

Original languageEnglish (US)
Pages (from-to)L505-L507
JournalJapanese Journal of Applied Physics, Part 2: Letters
Volume42
Issue number5 B
DOIs
StatePublished - May 15 2003

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

Keywords

  • Equilibrium reconstruction
  • Impurity emission
  • Ion temperature
  • Plasma velocity
  • Pulsed poloidal current drive
  • Reversed field pinch

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