Suppression of molybdenum impurity accumulation in the core using on-axis electron cyclotron resonance heating in EAST

Shen Yongcai; Lyu Bo; Zhang Hongming; Li Yingying; Fu Jia; Vogel German; Wang Xiaojie; Xu Handong; Wu Dajun; Zang Qing; Liu Haiqing; Liu Fukun; Wan Baonian; Ye Minyou

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Suppression of molybdenum impurity accumulation in the core using on-axis electron cyclotron resonance heating in EAST

机译：在东部轴上电子回旋谐振加热抑制芯中钼杂质积累的抑制

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Core metal impurity transport in an electron cyclotron resonance heating (ECRH) plasma is investigated for the first time in experimental advanced superconducting tokamak, on the basis of profile measurements of impurity emissions using space-resolved extreme ultraviolet spectroscopy. A significant reduction in the core molybdenum emissivity is observed during the on-axis ECRH phase, accompanied by decreased core electron density and increased electron temperature. The impurity transport study before and during ECRH injection is performed using line emissions of Mo XXIX, Mo XXX, Mo XXXI, and Mo XXXII with the core impurity transport code, STRAHL. It is found that the diffusion coefficient increases substantially and that the value of the diffusion coefficient is about one order of magnitude higher than that of neoclassical transport. Also, the inward convective velocity decreases and even changes its direction in the core region (rho <0.5) during on-axis ECRH, which is thought to dominantly contribute to the reduction in core impurity ion density. Published under license by AIP Publishing.

机译：在使用空间分辨的极端紫外光镜的杂质排放的轮廓测量的基础上，首次研究了电子回旋共振加热（ECRH）等离子体中的电子回旋共振加热（ECRH）等离子体。在轴上ECRH相期间观察到核心钼发射率显着降低，伴随着核心电子密度降低和增加的电子温度。使用莫XXIX，Mo XXX，Mo XXXI和Mo XXXII的线排放来进行ECRH注射前和在ECRH注射之前和期间的杂质转运研究与核心杂质传输代码，斯特拉尔。发现扩散系数基本上增加，并且扩散系数的值大约比新古典传输高的数量级。而且，向内对流速度降低，甚至在轴上的ECRH期间改变其在核心区域（RHO <0.5）中的方向，这被认为是主要导致核心杂质离子密度的降低。通过AIP发布在许可证下发布。

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来源
《Physics of plasmas》 |2019年第3期|共7页
作者
Shen Yongcai; Lyu Bo; Zhang Hongming; Li Yingying; Fu Jia; Vogel German; Wang Xiaojie; Xu Handong; Wu Dajun; Zang Qing; Liu Haiqing; Liu Fukun; Wan Baonian; Ye Minyou;
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Chinese Acad Sci Inst Plasma Phys Hefei 230031 Anhui Peoples R China;

Chinese Acad Sci Inst Plasma Phys Hefei 230031 Anhui Peoples R China;

Chinese Acad Sci Inst Plasma Phys Hefei 230031 Anhui Peoples R China;

Chinese Acad Sci Inst Plasma Phys Hefei 230031 Anhui Peoples R China;

Chinese Acad Sci Inst Plasma Phys Hefei 230031 Anhui Peoples R China;

Univ Sci &

Technol China Dept Engn &

Appl Phys Hefei 230026 Anhui Peoples R China;

Chinese Acad Sci Inst Plasma Phys Hefei 230031 Anhui Peoples R China;

Chinese Acad Sci Inst Plasma Phys Hefei 230031 Anhui Peoples R China;

Chinese Acad Sci Inst Plasma Phys Hefei 230031 Anhui Peoples R China;

Chinese Acad Sci Inst Plasma Phys Hefei 230031 Anhui Peoples R China;

Chinese Acad Sci Inst Plasma Phys Hefei 230031 Anhui Peoples R China;

Chinese Acad Sci Inst Plasma Phys Hefei 230031 Anhui Peoples R China;

Chinese Acad Sci Inst Plasma Phys Hefei 230031 Anhui Peoples R China;

Univ Sci &

Technol China Dept Engn &

Appl Phys Hefei 230026 Anhui Peoples R China;

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正文语种 eng
中图分类等离子体物理学;
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专利

1. Suppression of molybdenum impurity accumulation in the core using on-axis electron cyclotron resonance heating in EAST [J] . Shen Yongcai, Lyu Bo, Zhang Hongming, Physics of plasmas . 2019,第3期

机译：在东部轴上电子回旋谐振加热抑制芯中钼杂质积累的抑制
2. Experimental study of density pump-out effect with on-axis electron cyclotron resonance heating at the T-10 tokamak [J] . Andreev V. F., Borschegovskij A. A., Chistyakov V. V., Plasma physics and controlled fusion . 2016,第5期

机译：T-10托卡马克轴上电子回旋共振加热对密度抽出效应的实验研究
3. Suppression of cyclotron instability in Electron Cyclotron Resonance ion sources by two-frequency heating [J] . Skalyga V., Izotov I., Kalvas T., Physics of plasmas . 2015,第8期

机译：通过两频加热抑制电子回旋共振离子源中的回旋不稳定性
4. Core impurity rotation in TJ-II plasma scenarios in which combined ECRH and NBI heating is used to mitigate impurity accumulation [C] . B. López-Miranda, A. Baciero, K. J. McCarthy, EPS Conference on Plasma Physics . 2018

机译：TJ-II等离子体情景中的核心杂质旋转，其中ECRH组合和NBI加热用于减轻杂质累积
5. WHISTLER MODE ELECTRON CYCLOTRON RESONANCE HEATING AND EMISSION IN A MAGNETIC MIRROR PLASMA. (VOLUMES I AND II). [D] . BOOSKE, JOHN HENRY. 1985

机译：磁镜等离子体中的惠斯勒模式电子回旋共振加热和发射。（第一和第二卷）。
6. Studies by electron-paramagnetic-resonance spectroscopy of the environment of the metal in the molybdenum cofactor of molybdenum-containing enzymes. [O] . T R Hawkes, R C Bray 1984

机译：通过电子顺磁共振光谱法研究含钼酶的钼辅助因子中金属的环境。
7. Appearance and Dynamics of Helical Flux Tubes under Electron Cyclotron Resonance Heating in the Core of KSTAR Plasmas [O] . Yun, G. S., Park, H. K., Lee, W., 2012

机译：电子回旋共振在KSTAR等离子体核心中的螺旋通量管的外观和动力学

Suppression of molybdenum impurity accumulation in the core using on-axis electron cyclotron resonance heating in EAST

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