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.
Received: 02 July 2005
Revised: 22 October 2005
Accepted manuscript online:
(Plasma diagnostic techniques and instrumentation)
Cite this article:
Dong Jia-Fu(董贾福), Wang Shi-Qing(王世庆), and Li Wen-Zhong(郦文忠) Observation of hydrogen pellet ablation material flow by tomography 2006 Chinese Physics 15 2368
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.