Application of the Gyrotron FU II Submillimeter Wave Radiation Source to Plasma Scattering Measurements

Material type: 文書・図像類

Author: IDEHARA, Tほか

Publisher: Springer Verlag

Publication date: 2004-11

Material Format: Digital

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Note (General)：: Gyrotron FU II has been successfully applied as a submillimeter wave radiation source to plasma scattering measurements on the Compact Helical System ...

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Material Type: 文書・図像類
Title: Application of the Gyrotron FU II Submillimeter Wave Radiation Source to Plasma Scattering Measurements
Author/Editor: IDEHARA, T
OGAWA, I
KAWAHATA, K
IGUCHI, H
MATSUOKA, K
Author Heading: IDEHARA, T
OGAWA, I
KAWAHATA, K
IGUCHI, H
MATSUOKA, K
Publication, Distribution, etc.: Springer Verlag
Publication Date: 2004-11
Publication Date (W3CDTF): 2004-11
Periodical title: International Journal of Infrared and Millimeter Waves
No. or year of volume/issue: 25 11
Volume: 25
Issue: 11
Pages: 1567-1579
Text Language Code: eng
Subject Heading: Gyrotron
Submillimeter wave
Scattering measurement
Plasma
Target Audience: 一般
Note (General): Gyrotron FU II has been successfully applied as a submillimeter wave radiation source to plasma scattering measurements on the Compact Helical System (CHS) in National Institute for Fusion Science (NIFS) in Japan. The gyrotron operates in a long pulse mode (the pulse width is about 600 ms) at a frequency of about 350 GHz (the corresponding wavelength is 0.85 mm). The output power is about 110 W. The output power is transmitted along a circular waveguide system and converted to a Gaussian-like beam by a quasi-optical antenna. After that, the beam is directed onto the CHS plasma and the scattered signal is detected by a homodyne detection system. The frequency and the wave number of the scattered signal are analyzed. The results suggest that a broad band low frequency (several tens to several hundreds kHz) density fluctuation is excited in the CHS plasma only during neutral beam injection (NBI) or ion cyclotron resonance (ICR) heating.
Access Restrictions: 限定公開
Related Material (DOI): 10.1023/B:IJIM.0000047448.35485.eb
Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）
https://irdb.nii.ac.jp
Original Data Provider (Database): 福井大学 : 福井大学学術機関リポジトリ