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Portable laser plasma spark discharge element spectrum detection system

A laser plasma and spark discharge technology, applied in the field of plasma spectroscopy measurement, can solve the problems of insufficient discharge efficiency, no accurate control of delay time, etc., achieve long maintenance period, improve discharge efficiency and spectral signal stability, stable structure and portable. Effect

Inactive Publication Date: 2018-08-28
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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Problems solved by technology

Electrode discharge assisted technology is especially suitable for the on-site application development of assisted LIBS technology in terms of cost and portability. The delay time between generation and discharge is precisely controlled, resulting in a shortfall in discharge efficiency

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  • Portable laser plasma spark discharge element spectrum detection system
  • Portable laser plasma spark discharge element spectrum detection system
  • Portable laser plasma spark discharge element spectrum detection system

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Embodiment Construction

[0024] like figure 1 , 2 As shown, the portable laser plasma spark discharge element spectrum detection system includes a laser 1, a spectrometer 2, a high voltage source 3, a control board 4, a lithium battery 5, a tablet computer 6 and a hand-held working head 7. The laser 1, spectrometer 2. The control boards 4 are all connected to the tablet computer 6. The hand-held working head 7 includes a fine-tuning mechanism for the laser focus working point 8 and a plasma excitation and optical signal collection module 9. The plasma excitation and optical signal collection module 9 includes a spark discharge electrode pair 10 and an optical signal coupling collection unit 11, the lithium battery 5 is used to provide electric energy for the spectrometer 2, the laser 1, the high voltage source 3 and the control board 4, and the spark discharge electrode pair 10 passes through the wire The cable is connected to the high voltage source 3, the high voltage source 3 provides the spark di...

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Abstract

The invention discloses a portable laser plasma spark discharge element spectrum detection system. On the basis of a method for re-discharging a laser-induced plasma, the requirement for on-site detection sensitivity is met with small laser energy, and by precisely controlling delay between discharging and generating of the plasma, the plasma discharging efficiency and the spectral signal stability are improved. Plasma excitation, spark discharging and spectral signal collecting of the system are of an integrated modular structure adopting a hemispherical hollow cavity as a base body, and thestructure has the advantages of being stable, precise, compact, long in maintenance period and the like. Delay between plasma generating and spark discharging is controlled by a high-speed electronicswitch, and precise control can be performed according to the practical application situation of a system field. The system is easy and convenient to operate, low in cost, small in size, low in mass,easy to carry and capable of being widely applied to rapid detection in the fields such as environment heavy metal pollution, mining industry mining, archaeology and metal sorting.

Description

technical field [0001] The invention relates to the technical field of laser-induced plasma spectrum measurement, in particular to a portable laser plasma spark discharge element spectrum detection system, which is suitable for rapid detection applications in different fields such as environmental heavy metal pollution, mining mining, archaeology, and metal sorting. Background technique [0002] LIBS technology is a rapid element analysis method, mainly based on the interaction between laser and matter to generate laser plasma radiation spectrum, through the analysis of the characteristic spectral line wavelength and intensity of the element to be measured to achieve the qualitative and quantitative analysis of elements. LIBS technology can be used for any detection object. It has the advantages of simplicity and speed, no need for sample preparation, and multi-element simultaneous measurement. It has a wide range of applications and applied research in the fields of industry...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/71
CPCG01N21/718
Inventor 马明俊赵南京刘建国孟德硕方丽肖雪刘文清
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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