A family of aperiodic Mo/Be multilayer mirrors was designed for maximum uniform reflectivity in the ranges 111–138, 111–150, 111–200 and 111–222 A at normal radiation incidence. The simulations took into account the existence of Mo-on-Be and Be-on-Mo transition layers. It was shown that the reflectivity may be as high as 10% in an octave wavelength range of 111–222 A. We demonstrate the operation of an imaging transmission-grating spectrograph with a broadband Mo/Be multilayer mirror with a uniform reflectivity in the wavelength range 111–138 A synthesised at the Institute for the Physics of Microstructures, RAS. The spectrograph was used to record the line spectra of multiply charged fluorine and magnesium ions from a laser-produced plasma. The role of the grating support structure in the formation of spectral source images is discussed. The spatial resolution of 50 μm is demonstrated.

中文翻译：

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波长范围 λ > 111 Å 的成像宽带软 X 射线透射光栅光谱仪

一系列非周期性 Mo/Be 多层反射镜设计用于在法向辐射入射时在 111-138、111-150、111-200 和 111-222 A 范围内实现最大均匀反射率。模拟考虑了 Mo-on-Be 和 Be-on-Mo 过渡层的存在。结果表明，在 111-222 A 倍频程波长范围内，反射率可能高达 10%。 我们演示了具有在波长范围内具有均匀反射率的宽带 Mo/Be 多层镜的成像透射光栅光谱仪的操作范围 111–138 A 在微结构物理研究所合成，RAS。光谱仪用于记录来自激光产生的等离子体的多电荷氟离子和镁离子的线谱。讨论了光栅支撑结构在光谱源图像形成中的作用。