Analyzer for synchronously measuring in-situ laser mass spectrum and light spectrum

Abstract

The invention relates to an elemental analyzer and in particular relates to a laser ablation flight time mass spectrum analyzer and a laser-induced breakdown light spectrum analyzer. An analyzer for synchronously measuring in-situ laser mass spectrum and light spectrum is mainly characterized in that a target sample is arranged a cross point of a laser beam of a laser optical system, a central axis of a laser flight time mass spectrum measuring device and an axis of a lens set of a laser induced breakdown light spectrum measuring device, wherein the laser optical system comprises a laser device; an ultraviolet quartz prism, an ultraviolet quartz focusing lens and a high characteristic wavelength reflector are arranged on a laser beam transmitting channel; each laser pulse is focused on the surface of the target sample and used for generating a plasma plume; in order to accurately control the laser beam focusing position, a monitor CCD and a target sample positioning semiconductor laser device are also arranged at the front end of a vacuum chamber of the laser flight time mass spectrum measuring device; the target samples are respectively arranged on two sides of a target sample axis, an axis of the CCD and an axis of the positioning semiconductor laser device. The analyzer for synchronously measuring the in-situ laser mass spectrum and light spectrum has the advantage that information of the mass spectrum and the light spectrum of ablation products can be obtained under the same ablation condition by ablating target materials under the same condition by virtue of the same beam of laser.

Description

technical field [0001] The invention relates to an element analyzer, in particular to a laser ablation time-of-flight mass spectrometer and a laser-induced breakdown spectrometer. Background technique [0002] Material composition analysis has a wide range of application requirements in various fields such as metallurgy, food safety, environmental monitoring, and space exploration. Commonly used analysis methods include X-ray fluorescence analyzer, inductively coupled plasma spectrometer, inductively coupled plasma mass spectrometer, atomic absorption spectrophotometer, isotope mass spectrometer, inorganic mass spectrometer and organic mass spectrometer, etc. However, most elemental analysis instruments require sampling and pretreatment of the samples before they can be analyzed. Some analysis methods have relatively large restrictions on the shape of the sample, the types of elements to be analyzed, and the types of molecules. [0003] Laser Induced Breakdown Spectroscopy ...

AI Technical Summary

Problems solved by technology

However, because they used a quadrupole mass spectrometer, they could not obtain all the mass spectra at one time. In their published experiments, only the H(α) spectrum and C + Mass spectrometry, which greatly reduces its analytical efficiency

Combining LIBS technology with LA-TOF-MS technology to carry out in-situ, non-destructive elemental analysis, there is no literature report yet

Images