丝阵Z箍缩1维X射线辐射功率分布的数据处理
Data processing of 1D X-ray power distribution of wire-array Z-pinch
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摘要: 在丝阵Z箍缩实验中利用CCD记录X射线辐射功率的1维时空分布图像，对光纤传输效率、图像聚焦、MCP与CCD的耦合效率等因素造成的图像失真进行了处理，利用实验实测的单光纤点扩展图像和光传输效率曲线对辐射功率分布图像进行处理，并修正光纤传输效率以及MCP和CCD间耦合效率不均匀性的影响以还原X射线辐射功率的1维空间分布信息。处理后将图像沿空间积分获得了与X射线功率谱仪相吻合的X射线辐射功率脉冲波形，同时不同发次由两系统得到的X射线波形的前沿之间也表现出了良好的一致性。Abstract: In wire-array Z-pinch experiments the images of one-dimensional temporal-spatial X-ray power were recorded by charge-coupled device(CCD). Data processing to correct the effects of non-ideal aspects, including the nonuniform optical transmission efficiency, unsatisfactory focalization and coupling between image intensifier and CCD, was performed. Both point spread function(PSF) and calibrated optical transmission coefficient were used in the process. Consistent soft X-ray power(SXR) pulse with the experimental one obtained by X-ray power meter(XRPM) was derived. Rise times between the two SXR pulses of different shots were in good accordance.
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