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Two dimensionally space-resolved electron temperature measurement of laser created fusion plasmas

机译:激光产生的聚变等离子体的二维空间分辨电子温度测量

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Electron temperature distributions of laser created fusion plasma were measured by using toroidally bent Bragg crystals. Tiny amount of argon was seeded in deuterium fuel gas and monochromatic images of Ar~(+17) (1s-3p) Lyβ and Ar~(+16) (1s~1-1s3p) Heβ lines were taken to provide temperature distribution of the compressed core from their intensity ratios. A fusion core created by laser-generated x rays in a micro-cavity showed the temperature structure corresponding to the illumination asymmetry caused by the cavity irradiation geometry. The experimental distribution of the line-ratio of Lyβ to Heβ was compared with the postprocessed outputs from one dimensional simulation, assuming perfect spherical implosion, to discuss degradation of pellet implosion.
机译:通过使用环形弯曲的布拉格晶体来测量激光产生的熔融等离子体的电子温度分布。在氩气中注入少量的氩,并拍摄Ar〜(+17)(1s-3p)Lyβ和Ar〜(+16)(1s〜1-1s3p)Heβ线的单色图像,以提供氩气的温度分布。从强度比压缩芯。由激光产生的X射线在微腔中产生的熔核显示出与由腔体照射几何形状引起的照明不对称相对应的温度结构。假设理想球形内爆,将Lyβ与Heβ的线比例的实验分布与一维模拟的后处理输出进行了比较,以讨论颗粒内爆的退化。

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