Lossless implementation method for laser-induced breakdown spectroscopy component detection and application thereof

A technology of laser-induced breakdown and composition detection, which is applied in thermal excitation analysis, material excitation analysis, and material analysis through optical means, and can solve problems such as ablation damage, weakening of spectral signal propagation, and reduction of test accuracy and reliability. , to achieve the effect of reducing ablation, avoiding excessive loss, and reducing loss

Active Publication Date: 2021-12-03
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007]In order to solve the ablation damage caused by the laser-induced breakdown spectrum detection in the existing atmospheric environment, the laser-induced breakdown spectrum detection in the underwater environment Due to the ionization loss of laser beam energy caused by liquid water and the large weakening of spectral signal propagation by liquid water, the test accuracy and reliability are reduced. This invention proposes a n

Method used

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  • Lossless implementation method for laser-induced breakdown spectroscopy component detection and application thereof
  • Lossless implementation method for laser-induced breakdown spectroscopy component detection and application thereof
  • Lossless implementation method for laser-induced breakdown spectroscopy component detection and application thereof

Examples

Experimental program
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Example Embodiment

[0061] Experimental Example 1

[0062] like figure 1 As shown, a laser-inducible breakdown spectroscopy detection apparatus in an atmospheric environment disclosed in this example is shown in this method, and 1 is a laser, 2 is a mirror, and 3 is a focus mirror, 4 is a spectrometer, 5 is a fiber , 6 is the receiving head, 7 is the material to be detected, 8 is the laser beam focus position, the laser beam generated by the laser 1 is reflected by the mirror 2, and the focus mirror 3 is focused, and the surface of the material is irradiated directly to the surface of the material to form ablation. In the process of material excitation effect, the other end of the laser 1 is connected to the spectrometer 4, and the spectrometer 4 collects the spectral signal by the optical fiber 5, and the receiving head 6 collects the spectrum signal, and then analyzes the element type and component content of the surface of the material. During the process, the laser beam focus position 8 is in the...

Example Embodiment

[0065] Experiment 2

[0066] like figure 2 As shown, a laser-inducible breakdown spectroscopy detection apparatus in an atmospheric environment disclosed in the present experimentally disclosed, and the experimental example 1 is distinguished in that the material 7 to be detected is fully located in the underwater environment 9, and the remaining settings are the same as those of Experimental Example 1. .

[0067] In this method, the laser light beam passes through the underwater environment 9, and the surface of the material to be detected, form ablation and material excitation effect, and the spectrometer 4 collects the spectral signal by the receiving head 6, and then analyzes the element spectrum of the material surface. Information and the like and other information. During this process, the laser beam focus position 8 is in the surface of the material, i.e., the laser beam is free from the surface of the material; in addition, the propagation of the laser beam in the water c...

Example Embodiment

[0068] Example 1

[0069] like image 3 As shown, a laser-inducible breakdown spectroscopy detection apparatus generated in an atmospheric environment disclosed in the present embodiment, and the laser beam generated by the laser 1 is reflected by the mirror 2, and the focusing mirror 3 is focused, and the water constraint layer 10 is rotated. After the surface irradiation of the test material is allowed to detect the surface, the ablation of ablation and the material excitation effect are formed, and the other end of the laser 1 is connected to the spectrometer 4, the spectrometer 4 collects the spectral signal by the optical fiber 5, the receiving head 6 collects spectral signals, and then analyzes the material. Information of the type of element and component content. In the process, the laser beam focus position 8 is above the water constraint layer 10 of the surface of the material, i.e., the laser beam relative to the surface of the material is positive defocus state.

[0070...

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Abstract

The invention relates to the technical field of material microscopic information monitoring and detection, in particular to a lossless implementation method for laser-induced breakdown spectroscopy component detection and application thereof. In order to solve the problems that laser-induced breakdown spectroscopy detection in an existing atmospheric environment causes ablation damage to the surface of a material, and laser-induced breakdown spectroscopy detection in an underwater environment reduces test precision and reliability due to ionization loss of liquid water to laser beam energy and great weakening of the liquid water to spectral signal propagation. According to the lossless implementation method for laser-induced breakdown spectroscopy component detection and the application thereof, a laser-induced breakdown spectroscopy test process in an atmospheric environment is subjected to constraint type improvement, and a laser-induced breakdown spectroscopy destructive result is effectively compensated by adopting a pulse laser shock peening effect, so that lossess laser-induced breakdown spectroscopy component detection is realized.

Description

technical field [0001] The invention relates to the technical field of material microscopic information monitoring and detection, in particular to a non-destructive realization method and application of laser-induced breakdown spectrum component detection. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Laser-induced breakdown spectroscopy (LIBS) technology focuses ultrashort pulse laser on the surface of the sample to form plasma, and then analyzes the plasma emission spectrum to determine the material composition and content of the sample. After the ultrashort pulse laser is focused, the energy density is high, and it can excite samples in any state of matter (solid, li...

Claims

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Application Information

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IPC IPC(8): G01N21/71
CPCG01N21/718
Inventor 卢国鑫田野鲁艳红
Owner SHANDONG UNIV
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