| 谈谈光电子 |
2015-01-12 15:48 |
XUV光谱仪
XUV光谱仪是新型的像差校正平场入射X射线光谱仪,光谱范围可涵盖1-80nm.模块化设计,可以满足不同的实验条件和环境。 \kN?7b^ 单光栅(标准配置)可覆盖5-80nm测量范围 }4Q~<2 技术参数 |ju+{+ • tR\cS) 技术优势介绍: ,MjlA{0 - Direct imaging of the source / Superior signal strength In contrast to conventional devices our XUV spectrometer does not require a narrow entrance aperture but rather images the harmonic source directly onto the detector. Thus 80% or more of the incoming beam can be used for measurement. Please see http://www.hoerlein-partner.com/#!services/cihc for a sketch drawing. fuU
3?SG This configuration typically collects 15 to 25 times more light than standard versions, resulting in a signal-to-noise figure improved by the same ratio. fcTg/EXn In some experiments, this improved signal strength is the crucial step for realizing a measurement at all. `&:>?Y/X2 V-(*{/^" - Flat-field imaging technology Our instruments are based on high quality aberration-corrected flat-field gratings. In contrast to conventional gratings these focus all wavelengths onto a plane rather than a circle. This allows for positioning the entire detector in the focal plane of the grating for superior spectral resolution. 7~~suQ{F4 QM'|k6 - Compactness / Modularity The spectrometer is very compact and can be bolted directly to a vacuum chamber. It is capable of carrying its own weight, no table required. *P/DDRq(2 There are no externally moving parts. CofTTYl Through its modular design, our spectrometer can be adapted to a number of configurations (source distance, spectral range, detectors, vacuum 9PUobV_^Wo pumping, etc). This makes it highly flexible for varying requirements and experiments. 8!{
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? - Robust against misalignment The compact design of the spectrometer makes it inherently insensitive against mechanical and environmental disturbances (vibrations, acoustics, etc). No externally moving parts and closed-loop grating actuators with absolute position monitoring add to the robustness and allow for monitoring of the grating alignment at all times. bcUSjG> In addition, the concept of a spectrometer without entrance slit also makes the instrument less sensitive to misalignment. Under typical operating conditions a misalignment of the beam in the dispersion direction on the entrance of the spectrometer by 500um would lead to a signal reduction by more than 20% in an instrument with entrance slit while it is less than 10% for our design. "g*`G< | |