Double-pulse laser induction breakdown spectrum analysis device and method

Abstract

The invention relates to the technical field of laser ablation spectrum analysis and discloses a double-pulse laser induction breakdown spectrum analysis device and a double-pulse laser induction breakdown spectrum analysis method. The device comprises a control system, an environment detection module, a double-pulse laser transmitter module and a spectrum collection and analysis module which are arranged in a constant-temperature chassis, and a camera module arranged on the outer part of the constant-temperature chassis, wherein the control system is electrically connected with the environment detection module and the camera module respectively. The double-pulse laser induction breakdown spectrum analysis device can realize rapid and accurate analysis on sample ores and soil components of the lunar surface under original-position, online and remote control condition on the lunar surface, and can carry out deep analysis on all elements; meanwhile, the device can be used for carrying out three-dimensional analyzing imaging on all interested elements; furthermore, a double-pulse laser induction breakdown spectrum technology is applied so as to guarantee that a detection system has high detection sensitivity under an ultra-low air pressure (near vacuum) environment.

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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