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首页> 外文期刊>Plasma physics and controlled fusion >Light impurity transport studies with solid pellet injections in the RFX-mod reversed-field pinch
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Light impurity transport studies with solid pellet injections in the RFX-mod reversed-field pinch

机译：在RFX-mod反向场收缩中通过固体颗粒注入进行轻杂质迁移研究

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摘要

The transport of injected impurities is investigated in the multiple helicity (MH) and improved confinement quasi single helicity (QSH) magnetic regimes of RFX-mod reversed-field pinch. Impurities are introduced through injections of room temperature pellets of carbon (in MH and QSH) and lithium (in MH). Simulation of experimental spectroscopic measurements, including line and soft x-rays emission, electron density and radiated power is carried out with a 1D collisional-radiative impurity transport code, allowing to determine the transport parameters: diffusion coefficient and convective velocity. The transport coefficients were found close to those deduced in previous experiments through the introduction of Ni and Ne, confirming the existence of an external velocity barrier also for light impurities.
机译：在RFX-mod反向场收缩的多螺旋（MH）和改进的限制准单螺旋（QSH）磁态下研究了注入杂质的传输。通过注入室温下的碳（在MH和QSH中）和锂（在MH中）颗粒来引入杂质。使用1D碰撞-辐射杂质传输代码对包括线和软X射线发射，电子密度和辐射功率在内的实验光谱测量进行仿真，从而确定传输参数：扩散系数和对流速度。通过引入Ni和Ne，发现了与先前实验得出的近似的输运系数，这证实了对于轻质杂质也存在外部速度障碍。

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