Heterodyne interferometer of coaxial CO2 and He-Ne lasers for plasma density measurements

Hidemi Takahashi, Minoru Kimura, Reiji Sano, Yoshio Nagayama, Kenro Miyamoto

研究成果: Article査読

2 被引用数 (Scopus)

抄録

An interferometer using coaxial CO2 and He-Ne lasers has been developed for electron density measurements in the reversed field pinch plasma. The interferometer uses the phase modulating heterodyne detection of 60 MHz. The CO2 laser interferometer is free from the mechanical vibrations due to the reduction of the vibrations by the air springs and the compensation of the vibrations by the He-Ne laser interferometer. The electron density measurement during a long-time discharge of 50 ms without the disturbance by the vibrations is achievable. The resolution is less than 1/100 fringe of the CO2 laser interferometer, therefore the electron line density as small as 1.1×1014 electrons/cm2 is detectable.

本文言語English
ページ(範囲)1286-1289
ページ数4
ジャーナルReview of Scientific Instruments
57
7
DOI
出版ステータスPublished - 1986
外部発表はい

ASJC Scopus subject areas

  • 器械工学

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