用于软X光能谱测量的Ross滤片对的设计
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摘要: 描述了一种测量激光等离子体发射的软X光能谱强度的宽带Ross滤片谱仪。该谱仪具有多个能道，每道由一对Ross滤片及X光探测器组成。这些能道的灵敏带没有间隔地覆盖了整个感兴趣的能区。给出了使用Al阴级X光二极管作为探测器的最佳9能道谱仪(0.1~1.5keV)，并且计算了X光截面数据和滤片厚度不准确、以及滤片中光子散射等因素对探测精度的影响。Abstract: A broadband Ross filter spectrometer is described for measuring soft X-ray radiation (0.1~1.5keV) emitted from laser plasma. It consists of a number of channels, each representing a Ross filter pair in conjunction with Al cathode X-ray diodes. An optimal channel has flat response within the sensitivity band, and minimal response outside it. The effect of some uncertainties on the accuracy of measurements is calculated.
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Key words:
- laser plasma /
- soft x-ray spectrum /
- ross filter
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