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We have developed and successfully demonstrated the "point projection absorption spectroscopy (hereafter abbreviated to PPAS)" technique to record keV X-ray absorption spectra in the coronal region of laser produced aluminum plasma which provides spatial information in the corona. Absorption spectrum of the Al Ⅻ 1s2-1s2p resonant line for time delays up to 250, 500 and 750 ps after the peak of the incident laser pulse have been observed. Analysis of an absorption spectrum should allow a high spatial resolution (< 25μm) history of the absorbing ion population density to be determined. The 1-D hydro-code JB19 has been used to simulate the experiment and the predictions are compared to the observations. Such comparison can be useful in validating parts of the codes used for gain prediction on recombination X-ray laser transitions. 相似文献
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光、离子及X射线卡计 总被引:1,自引:0,他引:1
本文叙述了光、离子及X射线卡计原理、结构及其特性。在激光等离子体实验中得到了一些结果,并作了分析和讨论。 相似文献
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用于多波长高功率激光能量测量的体吸收能量计 总被引:2,自引:1,他引:1
叙述体吸收激光能量计的原理及物理模型,给出其性能参数及测试方法,分析它在神光Ⅱ装置中对三种波长激光能量测量的取样方式及测量精度。 相似文献
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