[Table of Contents]

Plasma and Fusion Research

Volume 2, 006 (2007)

Letters

Observation of Visible and Near-UV M1 Transitions from Highly Charged Kr, Mo and Xe Ions in LHD and its Prospect to Impurity Spectroscopy for D-T Burning Plasmas
Ryuji KATAI, Shigeru MORITA1) and Motoshi GOTO1)
Department of Fusion Science, The Graduate University for Advanced Studies
1)
National Institute for Fusion Science
(Received 11 January 2007 / Accepted 8 February 2007 / Published 14 March 2007)

Abstract

Magnetic dipole (M1) transitions from highly charged heavy impurities have been surveyed in visible and near-UV wavelength ranges longer than 2500 Å using a 1.33 m Czerny-Turner spectrometer in the Large Helical Device (LHD) for use in future visible impurity spectroscopy of D-T burning plasmas. The M1 transitions of KrXXII (Kr21+: P-like) 3s23p3 2D3/2-2D5/2 3463.75 ± 0.05 Å, KrXXIII (Kr22+: Si-like) 3s23p2 3P1-3P2 3841.07 ± 0.03 Å, MoXXIX (Mo28+: Si-like) 3s23p2 3P1-3P2 2842.10 ± 0.05 Å, XeXXXIII (Xe32+: Ti-like) 3d4 5D3-5D2 4139.01 ± 0.02 Å have been successfully observed using an external puff of Kr and Xe and an impurity pellet injection of Mo. As a result, the identication of the Ti-like XeXXXIII M1 transition, as observation for the first time in laboratory fusion plasmas, strongly suggests that the visible impurity spectroscopy of tungsten ions using Ti-like WLIII (W52+: 3626 Å) instead of the conventionally used EUV spectroscopy is possible in future D-T burning plasmas.

Keywords

plasma spectroscopy, highly charged ion, magnetic dipole transition, heavy impurity, krypton, molybdenum, xenon, tungsten, burning plasma

DOI: 10.1585/pfr.2.006

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References

  • [1] V. Kaufman and J. Suger, J. Phys. Chem. Ref. Data. 15, 321 (1986).
  • [2] U. Feldman, P. Indelicato and J. Sugar, J. Opt. Soc. Am. B 8, 3 (1991).
  • [3] C.A. Morgan et al., Phys. Rev. Lett. 74, 1716 (1995).
  • [4] F.G. Serpa et al., Phys. Rev. A 53, 2220 (1996).
  • [5] F.G. Serpa et al., Phys. Rev. A 55, 4196 (1997).
  • [6] D.R. Beck, Phys. Rev. A 56, 2428 (1997).
  • [7] D.J. Bieber, H.S. Margolis, P.K. Oxley and J.D. Silver, Phys. Scr. T73, 64 (1997).
  • [8] E. Träbert, P. Beiersdorfer, S. Utter and J.R. Crespo López-Urrutia, Phys. Scr. 58, 599 (1998).
  • [9] D.R. Beck, Phys. Rev. A 60, 3304 (1999).
  • [10] D. Kato et al., Phys. Scr. T80, 446 (1999).
  • [11] J.R. Crespo López-Urrutia, P. Beiersdorfer, K. Widmann and V. Decaux, Phys. Scr. T80, 448 (1999).
  • [12] S.B. Utter, P. Beiersdorfer and G.V. Brown, Phys. Rev. A 61, 030503 (2000).
  • [13] J.V. Porto, I. Kink and J.D. Gillaspy, Phys. Rev. A 61, 054501 (2000).
  • [14] H. Watanabe et al., Phys. Rev. A 63, 042513 (2001).
  • [15] D. Kato et al., J. Chinese Chem. Soc. 48, 525 (2001).
  • [16] D.N. Crosby, K. Gaarde-Widdowson, J.D. Silver and M.R. Tarbutt, Phys. Scr. T92, 144 (2001).
  • [17] U. Feldman, R. Doron, M. Klapisch and A. Bar-Shalom, Phys. Scr. 63, 284 (2001).
  • [18] C.F. Fischer and S. Fritzsche, J. Phys. B 34, L767 (2001).
  • [19] E. Biemont, E. Träbert and C.J. Zeippen, J. Phys. B 34, 1941 (2001).
  • [20] S.B. Utter, P. Beiersdorfer and E Träbert, Phys. Rev. A 67, 012508 (2003).
  • [21] H.A. Sakaue and D. Kato, J. Vac. Soc. Jpn. 48, 23 (2005) in Japanese.
  • [22] R. Katai, S. Morita and M. Goto, J. Plasma Fusion Res. Ser. 7, 9 (2006).
  • [23] R. Katai, S. Morita and M. Goto, J. Quant. Spectrosc. Radiat. Transfer (to be published).
  • [24] A. Iwamae, M. Atake, A Sakaue, M. Goto, R. Katai and S. Morita, Phys. Plasmas (to be published).
  • [25] H. Nozato, S. Morita, M. Goto, A. Ejiri and Y. Takase, Rev. Sci. Instrum. 74, 2032 (2003).
  • [26] R. Katai, S. Morita, M. Goto et al., Jpn. J. Appl. Phys. (to be published).
  • [27] M. Goto and S. Morita, Rev. Sci. Instrum. 77, 10F124 (2006).
  • [28] F.G. Serpa et al., Phys. Rev. A 55, 1832 (1997).
  • [29] H. Chen, P. Beiersdorfer, C.L. Harris and S.B. Utter, Phys. Scr. 66, 133 (2002).
  • [30] J. Sugar, V. Kaufman and W.L. Rowan, J. Opt. Soc. Am. B 8, 22 (1991).
  • [31] J. Sugar, V. Kaufman and W.L. Rowan, J. Opt. Soc. Am. B 7, 152 (1990).
  • [32] J.R. Roberts et al., Phys. Rev. A 35, 2591 (1987).
  • [33] E. Träbert, S.B. Utter and P. Beiersdorfer, Phys. Lett. A 272, 86 (2000).
  • [34] J.R. Crespo López-Urrutia, P. Beiersdorfer, K. Widmann and V. Decaux, Can. J. Phys. 80, 1687 (2002).
  • [35] I.I. Tupitsyn et al., Phys. Rev. A 68, 022511 (2003).
  • [36] K.-N. Huang, At. Data Nucl. Data. Tables 32, 503 (1985).

This paper may be cited as follows:

Ryuji KATAI, Shigeru MORITA and Motoshi GOTO, Plasma Fusion Res. 2, 006 (2007).