摘要
An Ha emission measurement array with 25 detection channels has been built on HL-1M tokamak. Reconstruction maps of Ha 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.
An Ha emission measurement array with 25 detection channels has been built on HL-1M tokamak. Reconstruction maps of Ha 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.
