Energy-Resolved Neutral Particle Fluxes in TJ-II ECRH Plasmas
Energy-Resolved Neutral Particle Fluxes in TJ-II ECRH Plasmas
复制标题
TJ-II ECRH 等离子体中的能量分辨中性粒子通量
DOI：
10.13182/fst04-a565
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发表时间：
2004
影响因子：
0.9
通讯作者：
J. Fontanet
中科院分区：
文献类型：
--
作者：
J. Fontdecaba;F. Castejón;R. Balbín;D. Lopez;S. Petrov;F. Albajar;G. Cortés;J. Dies;Jeronimo Garcia;Jesus Izquierdo;J. Fontanet
摘要利用中性粒子分析仪的测量结果，研究了TJ-Ⅱ仿星器中能量分辨的中性粒子通量。由于诊断的升级，可以推导出最后一个闭合磁表面之外的位置的平均离子能量。结果表明，平均离子能量分布是平坦的，即使在最后一个封闭的磁表面之外的位置，这意味着热离子的存在以及等离子体之外。这种平坦的轮廓可能与连接等离子体的远距离区域的宽离子轨道有关。
Abstract Energy-resolved neutral particle fluxes are studied in the TJ-II stellarator by using measurements from a neutral particle analyzer. The average ion energy can be deduced up to positions outside the last closed magnetic surface because of an upgrade of the diagnostic. The results suggest that the average ion energy profile is flat, even at positions outside the last closed magnetic surface, which implies the existence of hot ions well outside the plasma. Such a flat profile may be related to wide ion orbits connecting distant areas of the plasma.