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首页> 外文期刊>Plasma physics and controlled fusion >On electron backscattering from dust grains in fusion plasmas
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On electron backscattering from dust grains in fusion plasmas

机译：聚变等离子体中尘粒对电子的反向散射

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摘要

Electron backscattering is identified as an important aspect of dust dynamics in fusion plasmas. Previously published experimental data on the backscattering of electrons with fusion relevant energies from solid targets are reviewed. Simple analytical expressions are proposed which, with a minimum number of parameters, can fit the experimental results with high accuracy. The contribution of electron backscattering to dust charging and heating is calculated. It is concluded that, especially for high-Z materials such as tungsten, electron backscattering leads to effective cooling of the grains, thus reducing the dust bulk temperature and enhancing dust lifetime and transport.
机译：电子反向散射被认为是聚变等离子体中粉尘动力学的重要方面。审查了以前发表的关于电子与固体目标聚变相关能量的反向散射的实验数据。提出了简单的解析表达式，该表达式具有最少的参数数量，可以高精度地拟合实验结果。计算了电子反向散射对粉尘带电和加热的贡献。结论是，特别是对于钨等高Z材料，电子反向散射可有效地冷却晶粒，从而降低了粉尘的体温，并提高了粉尘的寿命和运输效率。

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