Plasma polarization spectroscopy of atomic and molecular emissions from magnetically confined plasmas
Plasma polarization spectroscopy of atomic and molecular emissions from magnetically confined plasmas
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DOI：
10.1139/p10-118
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发表时间：
2011-05
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影响因子：
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通讯作者：
T. Shikama;K. Fujii;S. Kado;H. Zushi;M. Sakamoto;A. Iwamae;M. Goto;S. Morita;M. Hasuo
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文献类型：
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作者：
T. Shikama;K. Fujii;S. Kado;H. Zushi;M. Sakamoto;A. Iwamae;M. Goto;S. Morita;M. Hasuo
在磁约束环面等离子体的光谱测量中，通常会观察到沿观察弦的线积分发射。然而，通过利用塞曼分裂幅度对发射位置的依赖性，可以分离沿观察弦存在的一些局部发射。对塞曼分裂谱线形状的详细分析使得评估磁场强度、人口密度、温度和流速的局部值成为可能。我们引入了偏振光谱来提高分离重叠光谱的准确性。在 TRIAM-1M 托卡马克中测量了偏振分辨的 Ha、He I 和 H2 Fulcher-a 带光谱，并研究了原子和分子动力学。简要介绍了 LHD 中同时测量 Balmer 系列和 Fulcher-a 能带光谱以及扩展到 CH Gero 能带光谱的进一步进展。
In spectroscopic measurements of magnetically confined torus plasmas, the line-integrated emission along a view- ing chord is usually observed. However, by utilizing the dependence of the magnitude of the Zeeman splitting on the emis- sion location, a few localized emissions existing along the viewing chord can be separated. A detailed analysis of the Zeeman split spectral lineshapes then makes it possible to evaluate the local values of the magnetic field strength, popula- tion density, temperature, and flow velocity. We have introduced polarization spectroscopy to improve the accuracy in sepa- rating the overlapped spectra. The polarization resolved Ha, He I, and H2 Fulcher-a band spectra are measured in the TRIAM-1M tokamak, and the atomic and molecular dynamics are investigated. Further progress in the simultaneous meas- urements of the Balmer series and Fulcher-a band spectra in LHD, and extension to the CH Gero band spectra, are briefly presented.