Plasma and Fusion Research

Volume 15, 1401048 (2020)

Regular Articles

Plasma Excitation in a DC Linear Magnetic Field by a Duoplasmatron Plasma Cathode
Jhoelle Roche M. GUHIT, Arnold Rey B. GINES, Kenta DOI and Motoi WADA
Graduate School of Science and Engineering, Doshisha University, Kyotanabe, Kyoto 610-0394, Japan
(Received 17 May 2020 / Accepted 25 May 2020 / Published 15 July 2020)

Abstract

A 280 G linear magnetic field sustained a 2.5 mm diameter stable hydrogen plasma column produced by a duoplasmatron plasma cathode. A high-intensity magnetic field created by a pair of permanent magnets and the field compression structure realized the passage of a dense plasma flow through a 2 mm diameter hole. Both ions and electrons can be extracted from the downstream plasma where a linear magnetic field can be induced to guide the plasma for striking a tungsten target. Luminous intensity distribution around a tungsten target located at another end of the magnetic field confronting to the plasma cathode was examined. A substantial reduction in the Hα line spectral broadening was observed that enabled a precise spectroscopic study of the hydrogen particle reflection at the solid target surface.

Keywords

particle reflection, tungsten, duoplasmatron ion source, plasma cathode

DOI: 10.1585/pfr.15.1401048

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References

  • [1] D.M. Goebel, G. Campbell and R.W. Conn, J. Nucl. Mater. 121(C), 277 (1984).
  • [2] M.Y. Ye, S. Takamura and N. Ohno, J. Nucl. Mater. 241-243, 1243 (1997).
  • [3] K. Doi, H. Yamaoka, T. Kenmotsu and M. Wada, IEEE Trans. Plasma Sci. 46(3), 482 (2018).
  • [4] C.D. Moak, H.E. Banta, J.N. Thurston, J.W. Johnson and R.F. King, Rev. Sci. Instrum. 30, 694 (1959).
  • [5] K. Doi, H.T. Lee, N. Tanaka, H. Yamaoka, Y. Ueda and M. Wada, Fusion Eng. Des. 136, 100 (2018).
  • [6] H. Takeuchi, Y. Yogo, T. Hattori, T. Tajima and T. Ishikawa, ISIJ (Iron Steel Inst. Jpn.) International 57, 1883 (2017).
  • [7] A. van Steenbergen, IEEE Trans. Nucl. Sci. NS-12, 746 (1965).
  • [8] R. Plamondon, J. Teichman and S. Torven, J. Phys. D. 21, 286 (1988).
  • [9] R.K. Janev, W.D. Langer, K. Evans, Jr. and D.E. Post, Jr. Elementary Processes in Hydrogen-Helium Plasma (Berlin, Heidelberg: Spiner-Verlag, 1987).
  • [10] Y. Yamamura and W. Takeuchi, Radiat. Eff. 71, 65 (1983).
  • [11] L.E. Collins and R.J. Brooker, Nucl. Instrum. Methods 15, 193 (1962).
  • [12] T. Kuzumi and M. Wada, Rev. Sci. Instrum. 91, 013505 (2020).