Edge plasma density reconstruction for fast monoenergetic lithium beam probing
Edge plasma density reconstruction for fast monoenergetic lithium beam probing
复制标题
用于快速单能锂束探测的边缘等离子体密度重建
DOI：
10.1063/1.1143996
复制
发表时间：
1992
影响因子：
1.6
通讯作者：
K. Kadota
中科院分区：
文献类型：
--
作者：
S. Sasaki;S. Takamura;M. Ueda;H. Iguchi;J. Fujita;K. Kadota
针对紧凑螺旋系统（CHS），提出了两种不同的8 keV中性锂束探测电子密度重建方法。通过使用从碰撞辐射模型获得的有效速率系数，包括对发射和电离过程的密度依赖。由于这两种方法在确定等离子体中的局部束密度的方式上不同，因此这两种方法具有不同的适用电子密度。在方法I中，通过迭代从电子密度分布计算束流衰减。在方法II中，通过从z向发射拖尾位置积分Li i发射强度来确定观察点z处的束剩余。在发射衰减时，快锂束完全衰减。选择适当的方法，使我们能够获得边缘电子密度分布以及在最后的封闭通量面的各种范围内的等离子体密度（1012-5×1013 cm−3）。重建的电子密度分布。
Two different electron density reconstruction methods for 8‐keV neutral lithium beam probing have been developed for the Compact Helical System (CHS). Density dependences on emission and ionization processes are included by using effective rate coefficients obtained from the collisional radiative model. Since the two methods differ in the way the local beam density in the plasma is determined, the methods have different applicable electron densities. The beam attenuation is calculated by iteration from the electron density profile in method I. In method II, the beam remainder at the observation point z is determined by integrating the Li i emission intensity from z toward the position of emission tail‐off. At the emission tail‐off, the fast lithium beam is completely attenuated. Selecting an appropriate method enables us to obtain edge electron density profile well inside the last closed flux surface for various ranges of plasma densities (1012–5×1013 cm−3). The electron density profiles reconstructed by ...