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X rays from optical-field ionized plasmas at low density

机译:来自低密度电离等离子体的X射线

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We present results of an experiment in which x rays from an optical-field ionized plasma are generated under well-controlled conditions in a low-pressure gas cell. In this way high-density effects such as electron heating, collisional ionization, and ionization defocusing are avoided. Using N-2 as the medium, we show that many features of the soft-x-ray emission follow theoretical predictions. In particular, higher x-ray intensity is observed on most lines for circularly than for linearly polarized light. However, several Li-like lines show anomalously strong emission for linear polarization. Mechanisms that may be responsible for this effect are discussed. (C) 1997 Optical Society of America.
机译:我们目前的实验结果是,在良好控制的条件下,在低压气室中产生了来自光场电离等离子体的x射线。这样,避免了诸如电子加热,碰撞电离和电离散焦之类的高密度效应。使用N-2作为介质,我们证明了软X射线发射的许多特征都遵循理论预测。特别是,在大多数线上,对于圆线观察到的X射线强度比对线偏振光的观察到的高。但是,几条类似Li的线显示出异常强烈的线性极化发射。讨论了可能造成这种影响的机制。 (C)1997年美国眼镜学会。

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