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Multi-Channel FIR HCN Laser Interferometer on HT-7 Tokamak

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Abstract

A Five-channel far-infrared (FIR) hydrogen cyanide (HCN) laser interferometer was developed to measure plasma electron density profile on the HT-7 superconducting tokamak. The structure of the five-channel FIR laser interferometer is described. The laser source used in the interferometer was a continuous wave glow discharge HCN laser with 3.4 m cavity length and 100 mW power output at 337 μm wavelength. The temporal resolution was 0.1 ms and the detection sensitivity was 1/12 fringe. Preliminary experimental results measured by the interferometer on HT-7 tokamak are reported.

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Reference

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Authors and Affiliations

  1. Institute of Plasma Physics, Academia Sinica, P.O. Box 1126, Hefei Anhui, 230031, People's Republic of China

    Y. X. Jie, X. Gao, Y. F. Cheng, K. Yang & X. D. Tong

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  1. Y. X. Jie
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  2. X. Gao
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  3. Y. F. Cheng
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  4. K. Yang
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  5. X. D. Tong
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Jie, Y.X., Gao, X., Cheng, Y.F. et al. Multi-Channel FIR HCN Laser Interferometer on HT-7 Tokamak. International Journal of Infrared and Millimeter Waves 21, 1375–1380 (2000). https://doi.org/10.1023/A:1026496705525

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  • DOI: https://doi.org/10.1023/A:1026496705525

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