Glancing incidence flat field spectrometer

Abstract

The glancing incidence flat spectrometer consists of mainly optical system, vacuum system, image acquiring system and support system. The optical system consists of mainly toroidal lens, slit, flat field grating, etc. The spectrometer has high sensitivity and great spectrographic range, and uses CCD camera in its image collecting system to realize the real-time collection of spatial resolution spectrum. All its optical elements are mounted on corresponding precise regulating devices, resulting high stability, compact structure, high precision, convenient regulation and simple and efficient operation. The spectrometer is regulated with analog light source simply. The spectrometer may be used widely in no-interference diagnosis of hot plasma.

Description

technical field [0001] The invention relates to a spectrometer used in plasma technology, especially a grazing-incidence flat-field spectrometer for measuring soft X-rays and extreme ultraviolet (XUV). Background technique [0002] In many fields such as strong field physics, laboratory astrophysics, X-ray lasers, and laser-driven inertial confinement nuclear fusion, the plasma will produce an extremely rich soft X-ray radiation spectrum, carrying a large amount of physical information during the interaction process. , so the study of the properties of the soft X-ray spectrum is of great significance for the understanding of these physical processes. Traditional spectrometers used to measure soft X-rays mainly include transmission grating spectrometers, crystal spectrometers, and grazing incidence grating spectrometers. The spectral range of the transmission grating spectrometer is large, but its spectral resolution is small, and it can only reach about 0.1nm at best, and t...

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to aim at the high cost of existing grazing incidence flat-field spectrometers, difficulty in adjustment, low spectral resolution and spatial resolution, relatively serious astigmatism, small spectral range, low sensitivity and stability Poor disadvantages; and provide a new type of spectrometer by adding a toroidal mirror in the front stage of the flat-field grating, the spectrometer has low cost, compact structure, convenient adjustment, spectral resolution and spatial resolution High, wide spectral range, high sensitivity, real-time data acquisition and stable performance, so as to develop practical, fast and effective technical means for non-interference diagnosis of plasma

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