Laser inductive dissociation spectrum detection system for space environment simulation and detection method thereof

Abstract

The disclosed laser induced dissociation optical spectrum detection system comprises: a pulse laser, a focus lens, a spectrograph, a pulse delay generator, a computer, and a vacuum sample room. This invention recognizes element type by comparing acquired unknown sample atomic spectrum data and normal data, and reduces the error to zero in principle.

Description

technical field [0001] The invention relates to laser-induced dissociation spectrum detection technology, in particular to a laser-induced dissociation spectrum detection system and detection method with simulated space environment conditions. Background technique [0002] The detection technology of material element composition was first developed by X-ray detection technology (XRF), and then by laser-induced dissociation spectroscopy (LIBS). LIBS is based on the organic combination of laser technology and spectroscopy technology. It is a new type of material Element detection and analysis technology, its working mechanism is: the high-energy pulsed laser beam converges on the surface of the material through the converging lens, and the trace substances at the converging point are vaporized and ionized in a very short time to form high-temperature and high-pressure plasma; Particles excited to a high-energy state radiate a plasma spectrum during the decay process. These spe...

AI Technical Summary

Problems solved by technology

Due to the inevitable "wavelength accuracy" problem of the linear CCD grating spectrometer, there is a certain error between the wavelength value of the spectral line directly read by the spectral analysis and the real wavelength value. When using this wavelength value with error and " When the data in the "standard atomic spectrum database" is compared, it will inevitably lead to element identification errors

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