Correlation of VUV intensity and basic plasma parameters

Long Feifei; Ming Tingfeng; Zhou Fan; Li Kai; Wang Zhijun; Zhuang Qing; Wu Chengrui; Wang Yumin; Huang Juan; Zang Qing; Zhang Tao; Liu Haiqing; Gao Xiang

doi:10.11884/HPLPB201830.170378

Volume 30 Issue 4

Apr. 2018

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Long Feifei, Ming Tingfeng, Zhou Fan, et al. Correlation of VUV intensity and basic plasma parameters[J]. High Power Laser and Particle Beams, 2018, 30: 046001. doi: 10.11884/HPLPB201830.170378

Citation:

Long Feifei, Ming Tingfeng, Zhou Fan, et al. Correlation of VUV intensity and basic plasma parameters[J]. High Power Laser and Particle Beams, 2018, 30: 046001. doi: 10.11884/HPLPB201830.170378

Long Feifei, Ming Tingfeng, Zhou Fan, et al. Correlation of VUV intensity and basic plasma parameters[J]. High Power Laser and Particle Beams, 2018, 30: 046001. doi: 10.11884/HPLPB201830.170378

Citation:

Long Feifei, Ming Tingfeng, Zhou Fan, et al. Correlation of VUV intensity and basic plasma parameters[J]. High Power Laser and Particle Beams, 2018, 30: 046001. doi: 10.11884/HPLPB201830.170378

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Correlation of VUV intensity and basic plasma parameters

doi: 10.11884/HPLPB201830.170378

Long Feifei^{1, 2
,},
Ming Tingfeng^{1
,
,},
Zhou Fan^{1, 2},
Li Kai^{1, 2},
Wang Zhijun^{1, 2},
Zhuang Qing^{1, 2},
Wu Chengrui^{1, 2},
Wang Yumin¹,
Huang Juan¹,
Zang Qing¹,
Zhang Tao¹,
Liu Haiqing¹,
Gao Xiang^{1, 2}

1.
Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230026, China
2.
University of Science and Technology of China, Hefei 230026, China

Received Date: 2017-09-19
Rev Recd Date: 2017-11-29
Publish Date: 2018-04-15

Abstract

Abstract

The high-speed vacuum ultraviolet (VUV) imaging system on the Experimental Advanced Superconducting Tokamak (EAST) is an optic system with both high temporal and spatial resolutions, and it can selectively measure VUV photons with a wavelength of 13.5 nm, which mainly come from the impurities line emission from the plasma. It is being developed for edge plasma studies and has been operated routinely during the 2016 EAST experiment campaign. In this work, effect on the VUV intensity of basic plasma parameters (i.e. plasma density, light impurities and neutral beam injection(NBI) heating power) is analyzed. The VUV intensity increases with the increases of the NBI heating power, the electron density and impurity (carbon and lithium) concentration, which is qualitatively consistent with the prediction. In addition, the contribution to the VUV intensity of the C⁵⁺ ions generated though the charge exchange recombination process during the neutral beam injection has been estimated, and it indicates that this effect can be neglected.
- VUV imaging system,
- neutral beam injection(NBI),
- plasma,
- impurity concentration

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References(16)

References

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