Global synchrotron radiation light source and silicon nitride membrane window

The number of synchrotron radiation devices worldwide is more than 50, but the exact number of specific synchrotron radiation light source line stations cannot be provided for the time being. However, some advanced synchrotron radiation devices, such as the United States Advanced Photon Source (APS), the European Synchrotron Radiation Facility (ESRF), Japan's SPring-8 and Germany's PETRA-III, have a leading role in the field of high-energy light sources, and can create value far beyond the chip process. Among them, the capacity of high-performance beamline stations can reach more than 90, which means that they can carry out 90 or more different experimental projects at the same time.

In synchrotron radiation light source, silicon nitride membrane window plays an important role. Such Windows are commonly used in the fabrication of collimators and filters for X-ray beams, as well as as window materials for soft X-ray microscopic imaging techniques.

The silicon nitride pane is composed of fine silicon nitride crystal lines, which are usually between a few hundred nanometers and a few microns in size, with very high accuracy and uniformity. When the radiation passes through the pane, the size and relative position of the crystal line can precisely control the propagation direction and wavelength distribution of the X-ray, so as to realize the collimation and filtering of the X-ray beam. This high-precision X-ray collimation and filtering function is very useful for structural analysis.

In addition, silicon nitride membrane windows are also widely used in synchrotron radiation X-ray transmission microscopy imaging technology for sample bearing. Because of its excellent properties, such as high transmittance, robustness and durability, silicon nitride film has become an ideal window material for soft X-ray microscopy. It can not only be used as a pollution barrier layer in synchrotron radiation beam line, but also as a substrate film for making various optical band plates, and for vacuum windows to separate high vacuum from high vacuum parts of microscopic optical elements, especially in the study of biological living cells.

In short, synchrotron radiation silicon nitride membrane window is an indispensable key component in synchrotron radiation light source, which provides important technical support for various scientific research.