Volume recombination of C4+ in detached divertor plasmas of JT-60U
Volume recombination of C4+ in detached divertor plasmas of JT-60U
复制标题
JT-60U 分离偏滤器等离子体中 C4 的体积重组
DOI：
10.1088/0029-5515/47/11/007
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发表时间：
2007
期刊：
影响因子：
3.3
通讯作者：
S. Higashijima
中科院分区：
文献类型：
--
作者：
T. Nakano;H. Kubo;N. Asakura;K. Shimizu;S. Konoshima;K. Fujimoto;H. Kawashima;S. Higashijima
用x点MARFE首次在分离的分流体中观察到C4+和e -向C3+的体积重组。复合区位于x点附近，电子温度和密度分别为6.3 eV和7.8 × 1020 m−3。在这个区域，体积复合通量比C3+的电离通量大两个数量级。然而，由复合过程产生的辐射功率仅占总辐射功率的2%，用测热计测量。相比之下，C3+基态的电子碰撞激发过程产生的辐射功率占总辐射功率的绝大部分。
Volume recombination of C4+ and e− into C3+ is observed for the first time in detached divertor plasmas with an X-point MARFE. The recombination zone is located around the X-point, and the electron temperature and density are evaluated to be 6.3 eV and 7.8 × 1020 m−3, respectively. In this zone, the volume recombination flux is larger by two orders of magnitude than the ionization flux of C3+. However, the radiation power due to the recombination process is only 2% of the total radiation power, measured by a bolometer. In contrast, the radiation power due to the excitation process from the ground state of C3+ by electron collision dominates the total radiation power.