[Table of Contents]

Plasma and Fusion Research

Volume 5, S1044 (2010)

Regular Articles

Toroidal Flow Velocity Profile of Impurity Ions in Field-Reversed Configuration Plasma
Tatsuya IKEDA, Toshiki TAKAHASHI, Tomohiko ASAI1) and Tsutomu TAKAHASHI1)
Department of Electronic Engineering, Gunma University, Kiryu 376-8515, Japan
1)
College of Science and Technology, Nihon University, Tokyo 101-8308, Japan
(Received 9 January 2009 / Accepted 11 June 2009 / Published 26 March 2010)

Abstract

Particle orbits of impurity ions are calculated in order to estimate their toroidal flow velocity. If the impurity ion flow differs from the ion flow, Doppler shift measurement of impurity spectra requires a suitable modification of experimental results. At the field null, the carbon ion flow coincides with the deuterium ion flow due to the friction force between them. At the separatrix, however, impurity and plasma ions each have their own flow velocities. The diamagnetic drift, which depends on the charge and mass of each fluid species, is found to dominate the toroidal flow velocity.

Keywords

field-reversed configuration, toroidal flow velocity, Doppler shift measurement, orbit calculation, resistive flux decay

DOI: 10.1585/pfr.5.S1044

Full Text

PDF format (1.5Mbytes) PDF Download

References

  • [1] M. Tuszewski, Nucl. Fusion 28, 2033 (1988).
  • [2] D. J. Rej et al., Phys. Fluids B 4, 1909 (1992).
  • [3] S. Ohi et al., Phys. Rev. Lett. 51, 1042 (1983).
  • [4] S. Shimamura and Y. Nogi, Fusion Technol. 9, 69 (1986).
  • [5] T. Asai et al., Phys. Plasmas 13, 072508 (2006).
  • [6] D. S. Harned and D. W. Hewett, Nucl. Fusion 24, 201 (1984).
  • [7] L. C. Steinhauer, Phys. Plasmas 9, 3851 (2002).
  • [8] E. V. Belova et al., Nucl. Fusion 46, 162 (2006).
  • [9] T. Takahashi et al., Plasma Fusion Res. 2, 002 (2007).
  • [10] A. H. Boozer and G. K.-Petravic, Phys. Fluids 24, 851 (1981).
  • [11] C. K. Birdsall and A. B. Langdon, in Plasma Physics via Computer Simulation (Institute of Physics Publishing, Bristol and Philadelphia, 1991).
  • [12] L. Spitzer, Astrophys. J. 116, 299 (1952).

This paper may be cited as follows:

Tatsuya IKEDA, Toshiki TAKAHASHI, Tomohiko ASAI and Tsutomu TAKAHASHI, Plasma Fusion Res. 5, S1044 (2010).