Synchrotron radiation sources have been used to study the focusing properties and angular distribution of X‐ray radiation at the exit of spherically bent microchannel plates (MCPs). In this contribution it is shown how soft X‐ray radiation at energies up to 1.5 keV can be focused by spherically bent MCPs with curvature radii R of 30 mm and 50 mm. For these devices, a focus spot is detectable at a distance between the detector and the MCP of less than R/2, with a maximum focusing efficiency up to 23% of the flux illuminating the MCP. The soft X‐ray radiation collected at the exit of microchannels of spherically bent MCPs are analyzed in the framework of a wave approximation. A theoretical model for the wave propagation of radiation through MCPs has been successfully introduced to explain the experimental results. Experimental data and simulations of propagating radiation represent a clear confirmation of the wave channeling phenomenon for the radiation in spherically bent MCPs.

中文翻译：

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球形弯曲微通道板对软X射线的波传播和聚焦

同步辐射源已用于研究球形弯曲微通道板（MCP）出口处X射线辐射的聚焦特性和角度分布。在这一贡献中，展示了如何通过曲率半径R为30 mm和50 mm的球形弯曲MCP聚焦高达1.5 keV能量的软X射线辐射。对于这些设备，在检测器与MCP之间的距离小于R时，可以检测到焦点/ 2，最大聚焦效率高达照亮MCP的光通量的23％。在波近似的框架中分析了球形弯曲MCP的微通道出口处收集的软X射线辐射。已经成功地引入了通过MCP辐射的波传播的理论模型来解释实验结果。传播的辐射的实验数据和模拟清楚地证明了球形弯曲MCP中辐射的波道现象。