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首页> 外文期刊>Research report NIFS-PROC series >Potential measurement with Heavy Ion Beam Probe in the Large Helical Device
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Potential measurement with Heavy Ion Beam Probe in the Large Helical Device

机译：大型螺旋装置中使用重离子束探头的电势测量

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摘要

The radial profile of potential in the core region of Large Helical Device (LHD) was measured with Heavy Ion Beam Probe (HIBP). The temporal evolution of radial potential profile was measured and the radial profile of radial electric field was estimated from the differential of the fitting function to experimental data. E_r profiles obtained from experimental data were compared with that from neoclassical calculation. The neoclassical prediction roughly coincides with experimental data. The dependence of sign of E_r measured with experimental data on the electron and ion temperatures was also compared with the neoclassical theory. The fluctuation of potential was measured with HIBP, and the clear peak can be seen in its spectrum at the frequency of the geodesic acoustic mode (GAM). The characteristic of this mode was analyzed.
机译：使用重离子束探针（HIBP）测量了大型螺旋装置（LHD）核心区域中电势的径向分布。测量径向势分布的时间演变，并根据拟合函数与实验数据的差异估算径向电场的径向分布。从实验数据获得的E_r轮廓与新古典计算得到的E_r轮廓进行了比较。新古典主义的预测与实验数据大致吻合。实验数据测得的E_r符号对电子和离子温度的依赖性也与新古典理论进行了比较。用HIBP测量电势的波动，在测地声模（GAM）的频率下，在其频谱中可以看到清晰的峰值。分析了该模式的特征。

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