中国物理B ›› 2006, Vol. 15 ›› Issue (10): 2368-2373.doi: 10.1088/1009-1963/15/10/030

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Observation of hydrogen pellet ablation material flow by tomography

董贾福, 王世庆, 郦文忠   

  1. College of Engineering and Technical, Chengdu University of Technology, Leshan 614007, China
  • 收稿日期:2005-07-02 修回日期:2005-10-22 出版日期:2006-10-20 发布日期:2006-10-20

Observation of hydrogen pellet ablation material flow by tomography

Dong Jia-Fu(董贾福), Wang Shi-Qing(王世庆), and Li Wen-Zhong(郦文忠)   

  1. College of Engineering and Technical, Chengdu University of Technology, Leshan 614007, China
  • Received:2005-07-02 Revised:2005-10-22 Online:2006-10-20 Published:2006-10-20

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摘要： An H\al emission measurement array with 25 detection channels has been built on HL-1M tokamak. Reconstruction maps of H\al emission distribution in plasma cross-section have been obtained by using tomography, with a hydrogen pellet injected into the plasma. The dimension, the shape and the rotation characteristic of the cross-section of the pellet ablation material flow tube have been observed. These results have been analysed and explained tentatively by using the `tail' model and the linear expansion model.

关键词: hydrogen pellet, H$\al$ emission, ablation rate, tomography

Abstract: An H$\alpha$ emission measurement array with 25 detection channels has been built on HL-1M tokamak. Reconstruction maps of H$\alpha$ emission distribution in plasma cross-section have been obtained by using tomography, with a hydrogen pellet injected into the plasma. The dimension, the shape and the rotation characteristic of the cross-section of the pellet ablation material flow tube have been observed. These results have been analysed and explained tentatively by using the `tail' model and the linear expansion model.

Key words: hydrogen pellet, H$\alpha$ emission, ablation rate, tomography

中图分类号:  (Laser ablation)

  • 52.38.Mf
52.30.Gz (Gyrokinetics) 52.55.Fa (Tokamaks, spherical tokamaks) 52.70.-m (Plasma diagnostic techniques and instrumentation)