Measurement of radial profiles of density ratio of helium to hydrogen ion using charge exchange spectroscopy with two-wavelength spectrometer

K. Ida, M. Yoshinuma, B. Wieland, M. Goto, Y. Nakamura, M. Kobayashi, I. Murakami, C. Moon

研究成果: ジャーナルへの寄稿学術誌査読

11 被引用数 (Scopus)

抄録

Radial profiles of density ratio of helium to hydrogen ions are measured using the charge exchange spectroscopy technique with the two-wavelength spectrometer system in the large helical device. The two-wavelength spectrometer system consists of a dichroic mirror box, a spectrometer with two grating and two camera lenses, and one CCD detector. The dichroic mirror box is used to divide the light of one fiber from the plasma to two fibers, one for HeII (λ = 468.6 nm) and the other for Hα (λ = 656.3 nm), that are connected to the entrance slit of the spectrometer to eliminate the interference between the HeII and the Hα spectra on the CCD. This system provides a simultaneous measurement of helium and hydrogen ion density ratio at 8 exact same locations (8 spatial channels) with a time resolution of >40 ms in the wide range of the density ratio of 0.05-5.

本文言語英語
論文番号123514
ジャーナルReview of Scientific Instruments
86
12
DOI
出版ステータス出版済み - 12月 2015
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 器械工学

フィンガープリント

「Measurement of radial profiles of density ratio of helium to hydrogen ion using charge exchange spectroscopy with two-wavelength spectrometer」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル