A study of tungsten spectra using large helical device and compact electron beam ion trap in NIFS
A study of tungsten spectra using large helical device and compact electron beam ion trap in NIFS
复制标题
DOI：
10.1063/1.4815848
复制
发表时间：
2013-07
期刊：
影响因子：
--
通讯作者：
S. Morita;C. Dong;M. Goto;D. Kato;I. Murakami;H. Sakaue;M. Hasuo;F. Koike;N. Nakamura;
中科院分区：
文献类型：
--
作者：
S. Morita;C. Dong;M. Goto;D. Kato;I. Murakami;H. Sakaue;M. Hasuo;F. Koike;N. Nakamura;
在可见光到极紫外光的波长范围内，已经从大螺旋装置（LHD）和紧凑型电子束离子阱（CoBIT）中观察到了钨的光谱。具有未分辨跃迁阵列（UTA）的EUV光谱，例如，用单能电子束（≤2keV）在CoBIT上测量了W+24-+33的6 g-4f，5g-4f，5 f-4d和5 p-4d跃迁，并与LHD等离子体测量结果进行了比较。利用CoBIT钨谱知识对铲运机钨谱进行了分析。为了详细解释UTA谱，我们开发了C-R模型程序。利用ADPAK原子数据库程序对高离化钨离子的极紫外光谱进行了测量和分析，研究了由电离和复合速率系数决定的电离平衡。作为第一次尝试，根据计算的发射速率系数，从类锌WXLV（W_（44+））4p-4s跃迁的径向分布，分析了LHD等离子体中钨的密度。
Tungsten spectra have been observed from Large Helical Device (LHD) and Compact electron Beam Ion Trap (CoBIT) in wavelength ranges of visible to EUV. The EUV spectra with unresolved transition array (UTA), e.g., 6g-4f, 5g-4f, 5f-4d and 5p-4d transitions for W+24-+33, measured from LHD plasmas are compared with those measured from CoBIT with monoenergetic electron beam (≤2keV). The tungsten spectra from LHD are well analyzed based on the knowledge from CoBIT tungsten spectra. The C-R model code has been developed to explain the UTA spectra in details. Radial profiles of EUV spectra from highly ionized tungsten ions have been measured and analyzed by impurity transport simulation code with ADPAK atomic database code to examine the ionization balance determined by ionization and recombination rate coefficients. As the first trial, analysis of the tungsten density in LHD plasmas is attempted from radial profile of Zn-like WXLV (W44+) 4p-4s transition at 60.9A based on the emission rate coefficient calculated...