[Table of Contents]

Plasma and Fusion Research

Volume 6, 2403098 (2011)

Regular Articles

One-Dimensional Time Dependent Analysis of the Detachment Front in a Divertor Plasma: Roles of the Cross-Field Transport
Makoto NAKAMURA, Satoshi TOGO, Masanori ITO and Yuichi OGAWA
Department of Advanced Energy, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwanoha 5-1-5, Kashiwa, Chiba 277-8561, Japan
(Received 7 December 2010 / Accepted 17 February 2011 / Published 11 August 2011)

Abstract

Results of one-dimensional time dependent analysis of a detachment front in a PDD plasma are reported. Effects of the cross-field particle and energy trasport in a divertor region on a partially detached plasma are particularly discussed. It was found that such transport effects in the divertor region can prevent the detachment fronts from moving upstream, and that the position of the detachment front in a steady state is thermally unstable against the neutral density in the divertor region.

Keywords

divertor detachment, detachment front, thermal stability, cross-field transport, one-dimensional model

DOI: 10.1585/pfr.6.2403098

Full Text

PDF format (681Kbytes) PDF Download

References

  • [1] M. Shimada et al., Nucl. Fusion 47, S1 (2007).
  • [2] D.J. Ward, Plasma Phys. Control. Fusion 52, 124033 (2010).
  • [3] ITER Physics Expert Group on Divertor, Nucl. Fusion 39, 2391 (1999).
  • [4] L. Loarte et al., Nucl. Fusion 47, S203 (2007).
  • [5] K. Tobita et al., Nucl. Fusion 49, 075029 (2009).
  • [6] H. Kawashima et al., Nucl. Fusion 49, 065007 (2009).
  • [7] S.I. Krasheninnikov et al., J. Nucl. Mater. 266-269, 251 (1999).
  • [8] D.E. Post and R.V. Jensen, At. Data Nucl. Data Tables 20, 397 (1977).
  • [9] E. Hinnov and J.G. Hirshberg, Phys. Rev. 125, 795 (1962).
  • [10] Yu. Gordeev et al., Pisma Zh. Eksp. Theor. 25, 223 (1977).
  • [11] N. Ohyabu, Nucl. Fusion 9, 1491 (1979).
  • [12] B. Lipschultz et al., Nucl. Fusion 24, 977 (1984).
  • [13] J.A. Wesson and T.C. Hender, Nucl. Fusion 33, 1019 (1993).
  • [14] I.H. Hutchinson, Nucl. Fusion 34, 1337 (1994).
  • [15] Ph. Ghendrih, Phys. Plasmas 1, 1929 (1994).
  • [16] J. Kesner, Phys. Plasmas 2, 1982 (1995).
  • [17] S.I. Krasheninnikov et al., Phys. Plasmas 2, 2717 (1995).
  • [18] S.I. Krasheninnikov et al., Phys. Plasmas 4, 3741 (1997).
  • [19] S.I. Krasheninnikov et al., Phys. Plasmas 5, 2297 (1998).
  • [20] S. Nakazawa et al., Plasma Phys. Control. Fusion 42, 401 (2000).
  • [21] R. Goswami et al., Phys. Plasmas 8, 857 (2001).
  • [22] M. Nakamura et al., to be published in J. Nucl. Mater. (2011).
  • [23] G.F. Matthews, J. Nucl. Mater. 220-222, 104 (1995).
  • [24] P.C. Stangeby, The Plasma Boundary of Magnetic Fusion Devices (IOP Publishing, Bristol and Philadelphia, 2000) p.277.
  • [25] W. Fundamenski, J. Nucl. Mater. 290-293, 593 (2001).
  • [26] R. Schneider et al., Contrib. Plasma Phys. 46, 3 (2006).
  • [27] S. Konoshima et al., J. Nucl. Mater. 313-316, 888 (2003).

This paper may be cited as follows:

Makoto NAKAMURA, Satoshi TOGO, Masanori ITO and Yuichi OGAWA, Plasma Fusion Res. 6, 2403098 (2011).