Measurement of Plasma Temperature and Electron Density

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概要

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• This investigation aims at measuring the temperature of the plasma obtained by passing condensed discharge through a Geisler tube containing neon. The wave-length of Ne I λ5852 emitted from condensed discharge was compared with that of the same line emitted from arc discharge, the comparison being made with a Fabry-Perot etalon. Red shift of the line by spark discharge was detected. From the amount of the shift the half-value width contributed by the ionic field and electrons was calculated by Lindholm's formula. Subtracting this (vectorially) from the observed half-value width, the width contributed by the Doppler effect alone was obtained, and then the plasma temperature was calculated. From the line profiles of H_γ and Ne I λ4715 Holtsmark's so-called normal field strength F_n was obtained, and therefore the electron density could be deduced. In our present example the mean plasma temperature was T = 6 × 10^3 K, and the mean electron density N = 1 × 10^<10> per cm^3.

• 社団法人日本物理学会の論文
• 1959-09-05

著者

• Murakawa Kiyoshi

  Aeronautical Research Institute University Of Tokyo

• Mizuno-hashimoto Shizuyo

  Aeronautical Research Institute University Of Tokyo

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