A double-pulse laser-induced breakdown spectroscopy analysis device and method

Abstract

The invention relates to the technical field of laser ablation spectrum analysis, and discloses a double-pulse laser induced breakdown spectrum analysis device and method. The device includes: a control system, an environment detection module, a double-pulse laser emission module contained inside a constant temperature chassis, and a spectrum analyzer. A collection and analysis module, and a camera module arranged outside the constant temperature chassis; the control system is electrically connected to the environment detection module and the camera module respectively. The invention can realize rapid and accurate analysis of lunar surface mineral samples and soil components under in-situ, online, and remote control conditions on the lunar surface, and can perform in-depth analysis of all elements and simultaneously perform three-dimensional analysis of various elements of interest. Imaging; in addition, the application of double-pulse laser-induced breakdown spectroscopy technology ensures the high detection sensitivity of the detection system in extremely low pressure (near vacuum) environments.

Description

technical field [0001] The invention relates to the technical field of laser ablation spectrum analysis, in particular to a double-pulse laser-induced breakdown spectrum analysis device and method. This method adopts double-pulse laser-induced breakdown spectroscopy technology, and realizes in-situ and long-distance rapid component analysis of solid samples in a low-pressure environment without sample pretreatment. It can be used for online analysis of solid ore samples on the lunar surface by lunar vehicles. Composition, and three-dimensional imaging of the content of various elements in ore samples can be performed at the same time. Background technique [0002] The moon is the closest celestial body to the earth. It is rich in mineral deposits. The moon's crust is composed of a variety of elements, mainly including: uranium, thorium, potassium, oxygen, silicon, magnesium, iron, titanium, calcium, aluminum and hydrogen. According to reports, the reserves of rare metals on...

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Problems solved by technology

[0007] The purpose of the present invention is: in order to solve the problem of low signal-to-background ratio and low sensitivity of traditional LIBS in an extremely low pressure (near vacuum) environment, and the accuracy of measuring material element components In order to solve the disadvantages of not high, a double-pulse laser-induced breakdown spectroscopy analysis device and method are provided, which can better complete the measurement tasks of remote, in-situ, and real-time analysis in an extremely low pressure environment, and solve the problem of insufficient measurement accuracy of trace elements. At the same time, it can realize the three-dimensional imaging analysis of ore and soil components

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