A sample stage for laser-induced breakdown spectroscopy detection
A laser-induced breakdown and spectral detection technology, applied in the field of laser-induced breakdown spectral detection, can solve problems such as high detection limit and poor repeatability, and achieve the effects of low cost, convenient disassembly, and improved detection repeatability.
Active Publication Date: 2017-04-12
ZHEJIANG UNIV
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Problems solved by technology
[0003] However, the laser-induced breakdown spectroscopy analysis and detection technology also has corresponding limitations: 1. The detection limit is relatively high
Usually the detection limit of LIBS is greater than μg / g
2. Poor repeatability
Method used
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Embodiment Construction
[0029] like Figure 1-3 As shown, a sample stage for laser-induced breakdown spectroscopy detection, including a rack lifting rod 1, a gear slider 2, a right-angle adapter plate 3, a plasma confinement window 4, a cylindrical guide rail 5, and a plasma confinement plate 6 , V-shaped slider 7, combined electric shift stage 9, pull rod 10.
[0030] The combined electric translation stage 9 adopts a four-degree-of-freedom (x, y, z, w) combined electric translation stage, including three single-degree-of-freedom (x, y, and z) pulse electric translation stages and one rotational degree of freedom (w) electric rotation tower.
[0031] The rack elevating rod 1 is vertically installed on the combined electric moving platform 9, and the gear slide block 2 is engaged with the rack elevating rod 1, and can move up and down along the vertical direction. The right-angle adapter plate 3 is fixed on the gear slider 3 by bolts, a rectangular light-transmitting opening is provided on the pla...
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Abstract
The invention discloses a sample table for laser-induced breakdown spectroscopy detection. The sample table comprises an electric displacement table having at least a one-dimensional degree of freedom; a movable lifting plate is mounted on the electric displacement table and an objective table for holding a sample is arranged on the electric displacement table in a sliding fit manner; a transparent confining window is arranged on the lifting plate; laser passes through the confining window and then strikes the sample; a confining plate is arranged under the lifting plate and located right above the sample; confining cavities are distributed on the confining plate and used for confining plasmas excited on the sample. According to the sample table for the laser-induced breakdown spectroscopy detection, the intensity of spectral lines is regulated by confining the plasmas in the transverse direction and the longitudinal direction and adjusting the size of the confining space according to the requirements of different sample, and the enhancement range of the intensity of spectral lines is from 2 to 10 times.
Description
technical field [0001] The invention relates to laser-induced breakdown spectrum detection technology, in particular to a sample stage for laser-induced breakdown spectrum detection. Background technique [0002] Laser-Induced Breakdown Spectroscopy (LIBS) uses the plasma generated by the pulsed laser to ablate and excite the material in the sample (usually solid), and obtain the spectrum emitted by the excited plasma atoms through the spectrometer to This is used to identify the elemental composition in the sample, and then the identification, classification, qualitative and quantitative analysis of materials can be carried out. This technology does not require sample pretreatment, and can quickly realize remote and micro-destructive detection of sample elements (especially metal elements), and can be used for the detection of solid, gas, and liquid samples. Laser-induced breakdown spectroscopy is also used in a wide range of applications, such as biomedicine, archaeology,...
Claims
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IPC IPC(8): G01N21/01G01N21/63
Inventor 刘飞彭继宇何勇张初孔汶汶冯雷
Owner ZHEJIANG UNIV