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We have constructed a new diagnostic system using laser Thomson scattering for the study of spatial structures of ECR plasmas. The system enables us to obtain unambiguous profiles of electron density ...and temperature of the plasmas, which can be quantitatively compared with simulation results so as to discuss the underlying physics. Spatial profiles of electron density and temperature in a typical ECR discharge have been successfully measured within experimental accuracy of±10%. Furthermore, a first attempt of such a comparison was performed between the experimental results obtained and simulation results using a two-dimensional particle-fluid hybrid code. As a result, it was shown that the experimental profiles of electron density and temperature were reasonably reproduced by the simulations if the microwave power deposition profiles were appropriately assumed. From these comparisons, it was found that the radial electron density profile is determined by a radial electric field distribution which drives ion flux radially.続きを見る
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Mendeley出力
