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Plasma‐implosion‐driven, photoionization‐pumped, soft x‐ray laser targets

机译:等离子体连字符;内爆连字符;驱动,光电离连字符;泵浦,软x连字符;射线激光目标

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Designs are proposed, based on a series of one‐dimensional calculations, for layered, hollow cylindrical targets to be placed on the axis of an imploding, hollowZ‐pinch plasma that can create the approximate plasma conditions, as well as radiation spectrum, for a photoionization pumped, Ne‐like recombination laser. The lasant must reach the Ne‐like state and be at the appropriate density at the same time that the photoionizing pump radiation is present, placing severe constraints on designs for such targets. Target designs are further constrained by the fact that the 3s‐2presonance line, which depopulates the lower lasing state, must not be highly trapped and by the fact that the upper lasing state must not be collisionally depopulated. We find that hollow, cylindrical targets consisting of a few‐micron‐thick CH strongback, coated on the inside with a thin layer of Ni lasant and on the outside with an Al converter layer, can be optimized to achieve appropriate conditions for lasing and modest levels of gain.
机译:基于一系列一维计算,提出了将分层的空心圆柱形目标放置在内爆的空心Z&连字符夹紧等离子体的轴上的设计,该等离子体可以为光电离泵浦的类似Ne&hyphen的复合激光器创建近似等离子体条件以及辐射光谱。激光必须达到类似Ne‐的状态,并在存在光电离泵辐射的同时处于适当的密度,这给此类目标的设计带来了严重的限制。目标设计进一步受到以下事实的限制:3s‐2presonance 线(使下部激光状态减少)不能被高度捕获,并且上部激光状态不能碰撞减少。我们发现,空心的圆柱形靶材由几微米厚的CH强背组成,内部涂有一层薄薄的镍涂层,外部涂有一层铝转换器层,可以进行优化,以实现适当的激光条件和适度的增益水平。

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