Detection limit of laser Thomson scattering for low density discharge plasmas

Mark D. Bowden; Yasunori Goto; Tsukasa Hori; Kiichiro Uchino; Katsunori Muraoka; Masanori Noguchi

doi:10.1143/jjap.38.3723

Detection limit of laser Thomson scattering for low density discharge plasmas

Mark D. Bowden, Yasunori Goto, Tsukasa Hori, Kiichiro Uchino, Katsunori Muraoka, Masanori Noguchi

Electrical Engineering Sciences

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

Laser Thomson scattering is a method for measuring electron properties of plasmas. Recent applications have showed that this method can be applied to much lower density plasmas than was previously possible. In this paper, a formalism is given for estimating the lower detection limit for different experimental arrangements and the lower detection limit of electron density in low density discharge plasmas is presented. It is shown that the intensity of the background plasma emission is the main factor that determines the signal-to-noise ratio and hence the lower detection limit. The dynamic range for measurements of electron energy distribution functions is also discussed.

Original language	English
Pages (from-to)	3723-3730
Number of pages	8
Journal	Japanese Journal of Applied Physics
Volume	38
Issue number	6 A
DOIs	https://doi.org/10.1143/jjap.38.3723
Publication status	Published - Jun 1999

All Science Journal Classification (ASJC) codes

Engineering(all)
Physics and Astronomy(all)

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T1 - Detection limit of laser Thomson scattering for low density discharge plasmas

AU - Bowden, Mark D.

AU - Goto, Yasunori

AU - Hori, Tsukasa

AU - Uchino, Kiichiro

AU - Muraoka, Katsunori

AU - Noguchi, Masanori

PY - 1999/6

Y1 - 1999/6

N2 - Laser Thomson scattering is a method for measuring electron properties of plasmas. Recent applications have showed that this method can be applied to much lower density plasmas than was previously possible. In this paper, a formalism is given for estimating the lower detection limit for different experimental arrangements and the lower detection limit of electron density in low density discharge plasmas is presented. It is shown that the intensity of the background plasma emission is the main factor that determines the signal-to-noise ratio and hence the lower detection limit. The dynamic range for measurements of electron energy distribution functions is also discussed.

AB - Laser Thomson scattering is a method for measuring electron properties of plasmas. Recent applications have showed that this method can be applied to much lower density plasmas than was previously possible. In this paper, a formalism is given for estimating the lower detection limit for different experimental arrangements and the lower detection limit of electron density in low density discharge plasmas is presented. It is shown that the intensity of the background plasma emission is the main factor that determines the signal-to-noise ratio and hence the lower detection limit. The dynamic range for measurements of electron energy distribution functions is also discussed.

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JO - Japanese Journal of Applied Physics

JF - Japanese Journal of Applied Physics

IS - 6 A

ER -

Detection limit of laser Thomson scattering for low density discharge plasmas

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