First electron density fluctuation measurement via the HCOOH laser far-forward collective scattering on HL-2A tokamak
作者: Y.G. LiY. ZhouY. LiH.X. WangZ.C. DengJ. YiX.Q. JiHL-2A team
作者单位: 1Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, China
刊名: Journal of Instrumentation, 2016, Vol.11 (2)
来源数据库: Institute of Physics Journal
DOI: 10.1088/1748-0221/11/02/C02002
原始语种摘要: Based on the fact that the scattered power is proportional to the square of the electron density fluctuation amplitude, the four-channel formic acid (HCOOH, λ=432.5 um) laser interferometer has been firstly upgraded to measure the far-forward collective scattering ( FCS ) from the electron density fluctuation ( ñe ) on HL-2A tokamak in 2014–15 experimental campaign. The HCOOH- FCS system provides the line-integrated measurement of fluctuations covering the wavenumber range: k <1.6 cm−1 (perpendicular to the magnetic field). A lot of electron density fluctuations have been successfully measured by the HCOOH- FCS . In especial, the high-frequency density fluctuation (up to 500 kHz) induced by the core-localized Alfvénic eigenmode ( AE ) has been...
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  • density 密度
  • electron 电子
  • tokamak 托卡马克
  • fluctuation 起伏
  • collective 集体
  • measurement 测量
  • forward 促进
  • scattering 散射
  • FCS Facsimile Communications System
  • especial 特别的