Plasma and Fusion Research

Volume 7, 2406122 (2012)

Regular Articles

FDTD Simulation Analysis for Improving Two-Dimensional Electron Density Distribution Measurement using Phase Imaging in GAMMA 10

Tomohiro YAMADA, Masayuki YOSHIKAWA, Junko KOHAGURA, Yoriko SHIMA, Yusuke MORIKAWA, Daichi AKITA, Mizuki SAKAMOTO and Tsuyoshi IMAI

: Plasma Research Center, University of Tsukuba, 1-1-1 Tennodai, Ibaraki 305-8577, Japan

(Received 9 December 2011 / Accepted 3 July 2012 / Published 13 September 2012)

Abstract

A phase-imaging interferometer is used to measure the electron density distribution in the plug region in GAMMA 10. The electron density is derived by the Abel transform technique. We attempt to determine the plasma density distribution for an asymmetric Abel transform by using finite-difference time-domain simulations. Moreover, we try to construct the asymmetric Abel transform for an asymmetric plasma distribution.

Keywords

electron density, phase imaging method, asymmetric Abel transform, FDTD code, phase difference

DOI: 10.1585/pfr.7.2406122

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References

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This paper may be cited as follows:

Tomohiro YAMADA, Masayuki YOSHIKAWA, Junko KOHAGURA, Yoriko SHIMA, Yusuke MORIKAWA, Daichi AKITA, Mizuki SAKAMOTO and Tsuyoshi IMAI, Plasma Fusion Res. 7, 2406122 (2012).