Plasma and Fusion Research

Volume 4, 010 (2009)

Rapid Communications

Interferometry for Weakly Relativistic Plasmas
Hitoshi HOJO, Atsushi MASE1) and Kazuo KAWAHATA2)
Plasma Research Center, University of Tsukuba, Tsukuba 305-8577, Japan
1)
Art, Science and Technology Center for Cooperative Research, Kyushu University, Kasuga 816-8580, Japan
2)
National Institute for Fusion Science, Toki 509-5292, Japan
(Received 16 December 2008 / Accepted 23 January 2009 / Published 6 March 2009)

Abstract

Interferometry for weakly relativistic plasmas is studied in this paper. It is shown that the phase difference in plasma and vacuum propagation becomes small due to the relativistic mass correction of electrons. The axisymmetric density profile obtained from the usual Abel inversion equation also becomes small by the correction factor, which is 1 ∼ 1.3 for Te = 0 ∼ 60 keV. It is shown that we have to use the Abel inversion equation to take into account the relativistic mass correction of electrons in order to reconstruct the correct density profile.

Keywords

interferometry, relativistic plasma, relativistic mass correction, Abel inversion

DOI: 10.1585/pfr.4.010

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References

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This paper may be cited as follows:

Hitoshi HOJO, Atsushi MASE and Kazuo KAWAHATA, Plasma Fusion Res. 4, 010 (2009).