電子サイクロトロン共鳴プラズマのレーザートムソン散乱法による研究

概要

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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.
九州大学大学院総合理工学研究科,Interdisciplinary Graduate School of Engineering Sciences, Kyushu Universityの論文
1995-03-01