Large-size multi-channel laminar flow laser ablation pool

Abstract

The present invention provides a large-size multi-channel laminar flow laser ablation pool, which comprises a sample chamber cavity and a sample seat, wherein the upper surface and the lower surface of the sample chamber cavity are respectively provided with a calcium fluoride window frame and a light transmission window, the left side surface of the sample chamber cavity is provided with a sample placement port, the sample seat is fixed in the hollow cavity in the sample chamber cavity through the sample placement port, the sample seat is provided with a sample accommodation chamber downwardly recessing from the upper surface of the sample seat, the upper surface of the sample seat and the sample chamber cavity are arranged in a sealed manner, the right side surface of the sample chamber cavity is provided with a plurality of aerosol gas outlet channels arranged side by side, the left side surface of the sample chamber cavity is provided with a plurality of carrier gas inlet channels arranged side by side, and the aerosol gas outlet channels and the carrier gas inlet channels extend inwardly and are communicated to the sample accommodation chamber. According to the present invention, with the large-size multi-channel laminar flow laser ablation pool, a lot of the samples can be placed, and the defects that the aerosol transmission is slow, the memory effect is significant and the like can be overcome.

Description

technical field [0001] The invention relates to the technical field of laser ablation, in particular to a large-scale multi-channel laminar flow laser ablation pool. Background technique [0002] Laser ablation inductively coupled plasma optical / mass spectrometry is one of the most successful and effective techniques for direct elemental or isotope analysis of solid samples, which has been widely used in earth science, material science, life science, chemistry and other fields . Laser ablation technology is composed of laser, laser optical path, observation system, sample ablation and high-precision moving system. The basic working principle is that the laser light generated by the laser is focused to the sample surface through the optical path, and the aerosol generated on the sample surface is transmitted to the plasma mass spectrometer through the carrier gas for analysis. The laser ablation cell is where the sample for analysis is placed and where the laser ablation ta...

AI Technical Summary

Problems solved by technology

At present, many laser manufacturers have introduced double-volume laser ablation pools, that is, a small ablation pool is set inside a large laser ablation pool. This design has the advantages of both large and small ablation pools to a certain extent, but this ablation pool The operation and control are complicated, and the production cost is greatly increased. Limited by the small denudation pool, this denudation pool puts forward higher requirements on the flatness of the sample surface

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