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An Application of Hadamard Transform for Plasma Laser-Induced Fluorescence Spectroscopy

Hiroyuki ARAKAWA, Shigeru INAGAKI^1,2), Makoto SASAKI^1,2), Kimitaka ITOH^2,3) and Sanae.-I. ITOH^1,2)

Teikyo University, 6-22 Misakimachi, Omuta 836-8505, Japan

1)

Research Institute for Applied Mechanics, Kyushu University, 6-1 Kasuga-Koen, Kasuga 816-8580, Japan

2)

Research Center for Plasma Turbulence, Kyushu University, 6-1 Kasuga-Koen, Kasuga 816-8580, Japan

3)

National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 502-5292, Japan

(Received 22 August 2015 / Accepted 30 September 2015 / Published 28 December 2015)

Abstract

An application of Hadamard transform method to laser-induced fluorescence spectroscopy (LIF) is proposed, in order to improve spatial resolution, signal-to-noise ratio, and experimental efficiency. The new method allows for measurement of spatial structure of ion flow and/or temperature efficiently with single detector by changing Hadamard mask configurations.

Copyright (c) 2015 The Japan Society of Plasma Science and Nuclear Fusion Research

Keywords

Hadamard transform, laser-induced fluorescence, Doppler shift spectroscopy, absolute velocity measurement, absolute temperature measurement

DOI: 10.1585/pfr.10.1201085

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References

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This paper may be cited as follows:

Hiroyuki ARAKAWA, Shigeru INAGAKI, Makoto SASAKI, Kimitaka ITOH and Sanae.-I. ITOH, Plasma Fusion Res. 10, 1201085 (2015).