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On-line in situ detecting device for infrared-ultraviolet double pulse laser induced breakdown spectroscopy

A laser-induced breakdown, double-pulse technology, applied in measurement devices, material excitation analysis, material analysis by optical means, etc., can solve the problems of low plasma temperature and density, limited emission spectrum intensity, and low analytical sensitivity, etc. Achieve the effect of improving sensitivity, prolonging relaxation time, and simple and fast analysis

Inactive Publication Date: 2012-06-20
DALIAN UNIV OF TECH
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Problems solved by technology

The temperature and density of the plasma excited by single-pulse LIBS are low, and the intensity of the emission spectrum formed is limited, so the analytical sensitivity is relatively low and the detection limit is relatively high

Method used

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  • On-line in situ detecting device for infrared-ultraviolet double pulse laser induced breakdown spectroscopy
  • On-line in situ detecting device for infrared-ultraviolet double pulse laser induced breakdown spectroscopy
  • On-line in situ detecting device for infrared-ultraviolet double pulse laser induced breakdown spectroscopy

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Embodiment Construction

[0023] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0024] 1. System overview

[0025] The IR-UV double-pulse laser-induced breakdown spectroscopy online in-situ detection device is based on double-pulse laser-induced breakdown spectroscopy (Double Pulse Laser Induced Breakdown Spectroscopy for short DP-LIBS) technology, which is mainly composed of a double-pulse laser emission system, a fixed-point sampling detection system, The optical radiation collection system and the data acquisition and processing system are composed of four major parts. The core components include infrared band lasers (take 1064nm Nd:YAG nanosecond pulse laser as an example), ultraviolet band lasers (take 193nm ArF excimer nanosecond pulse laser as an example), pulse delay controller, beam remote convergence adjustment device, spectrum Remote receiving device, seven-channel high-resolution miniature optical fiber, full-band la...

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Abstract

The invention discloses an on-line in situ detecting device for an infrared-ultraviolet double pulse laser induced breakdown spectroscopy, the device is based on Double Pulse Laser Induced Breakdown Spectroscopy (DP-LIBS) technology and is mainly composed of a double pulse laser emission system, a spot sampling detection system, an optical radiation collection system and a data collecting and processing system, etc. The detecting device disclosed by the invention can be used for realizing the spot sampling detection of the sample to be detected, finishing the in situ analysis and real-time analysis of the sample and the accurate detection of trace elements in a simple, convenient and quick manner, the sample is not pre-treated necessarily, and a plurality of elements can be simultaneously measured, so that the detecting device can be extensively applied in such technical fields as analysis, detection, measurement and diagnosis, etc.

Description

technical field [0001] The invention can meet the strict requirements of on-line in-situ detection, is widely applicable to multiple technical fields such as analysis, detection, measurement and diagnosis, and specifically relates to an on-line in-situ detection device for infrared-ultraviolet double-pulse laser-induced breakdown spectroscopy. Background technique [0002] On-line in-situ detection technology is a new and important part of modern detection technology. It can quickly, conveniently and effectively detect the performance of materials in in-service equipment, and discover the damage of in-service structures and vulnerable parts. It is the key to preventing accidents and ensuring equipment Effective means of operational security. The technical difficulties of in-situ testing are mainly manifested in the following aspects: on the one hand, the testing site conditions are harsh and cannot be compared with ideal conditions such as laboratories; on the other hand, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/63
CPCG01N21/718
Inventor 王宏北李聪丁洪斌罗广南
Owner DALIAN UNIV OF TECH
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