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An eight-beam 0.351-μm laser with pulse duration of about 1.0ns and energy of 260J per beam was injcted into a cylindrical cavity to generate intense x-ray radiation on the Shengguang Ⅱ high power laser facility.A mixture foil of gold and gadolinium and a gold foil were attached on portion of a diagnostic hole in the mid-plane of the cavity and ablated by the intense x-ray radiation.The propagating time of the radiation heat wave in the mixture and the pure gold foil were measured with soft-x-ray spectrometer and by adopting space-and time resolved measurement technolgoy,respectively,The results shows that the mixrue of gold and gadolinium has higher Rosseland mean opacity than the gold sample in our experiment. 相似文献
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Eight beams 0.35μm laser with pulse duration of about 1.0ns and energy of 260J per beam was injected into a cylindrical cavity to generate intense x-ray radiation on the “Shengguang Ⅱ“ high power laser facility.Gold foils with a thickness in the range of 0.09-0.52μm were attached on the diagnostic hole of the cavity and ablated by the intense x-ray radiation.The propagating radiation heat wave in the high-Z gold plasma was observed clearly.For comparison,we also simulated the experimental results. 相似文献
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