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Density Regimes of Low-Aspect-Ratio RFP Plasmas in RELAX

机译:RELAX中低纵横比RFP等离子体的密度机制

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The line-averaged electron density has been measured over a wide range of discharge conditions in a low-aspect-ratio reversed field pinch (RFP) machine RELAX. A 104 GHz heterodyne interferometer was mainly used throughout the experiments. The measured electron density ne varied from ~0.3 × 1019 m?3 to ~3 × 1019 m?3, depending upon the discharge conditions. A new 60 GHz homodyne interferometer, characterized by simplicity and low cost, has been developed for the density measurement particularly in low density regime. The results from the new homodyne interferometer have shown good agreement with those from the heterodyne system in low-density regime of ne up to ~1019 m?3.
机译:线平均电子密度是在低纵横比的反向场收缩(RFP)机器RELAX的大范围放电条件下测量的。在整个实验中主要使用104 GHz外差式干涉仪。测得的电子密度n e 从〜0.3×10 19 m ?3 到〜3×10 19 m ?3 ,取决于放电条件。已经开发出一种以简单和低成本为特征的新型60 GHz零差干涉仪,用于密度测量,尤其是在低密度条件下。新型零差干涉仪的结果在n e 的低密度范围直至10 19 m ?3的情况下与外差系统的结果显示出良好的一致性。

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