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Spectrum detection device of double-pulse excited magnetic field space dual-constrained reinforced plasma

A technology of spectral detection and plasma, which is applied in the field of spectral detection devices of ions, can solve the problems of increasing the number of laser pulses, etc., and achieve the effects of removing interference, enhancing spectral signal strength, and great flexibility

Pending Publication Date: 2017-09-26
ZHEJIANG UNIV
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Problems solved by technology

The current research is mainly limited to increasing the number of laser pulses, using double-pulse or multi-pulse excitation to enhance the intensity of the spectral signal, which has a better effect than single-pulse excitation, but there is still room for further improvement.

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  • Spectrum detection device of double-pulse excited magnetic field space dual-constrained reinforced plasma
  • Spectrum detection device of double-pulse excited magnetic field space dual-constrained reinforced plasma

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Embodiment Construction

[0022] The present invention will be described in detail below in conjunction with the embodiments and accompanying drawings, but the present invention is not limited thereto.

[0023] Such as figure 1 The shown double-pulse excitation magnetic field space double confinement enhanced plasma spectral detection device includes: ICCD detector 1, échelle grating spectrometer 2, computer 3, signal collector 4, sample stage 5, mirror 6, focusing lens 7 , Nd:YAG laser 8, digital delay pulse generator 9 and displacement console 10.

[0024] Such as figure 2 As shown, there is a sample stage with dual constraints of magnetic field constraint and space constraint, including a long straight-through electric solenoid 51, a hemispherical cavity 52 with a magnetic mirror on the inner wall, a first laser pulse 53, a sample to be tested 54, and a sample circular stage 55 , second laser pulse 56 .

[0025] The specific operation steps of the spectral detection device for double-pulse excit...

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Abstract

The invention discloses a spectrum detection device of a double-pulse excited magnetic field space dual-constrained reinforced plasma. The device comprises a laser light source and a sample platform, wherein a magnetic component used for forming a magnetic field constraint around the sample platform is arranged on the side surface of the sample platform; the device is provided with a transparent space constrain cover which covers the sample platform; and a magnetic mirror is attached to the inner wall of the constrain cover. Three actions of double-pulse excitation, spatial constraint and magnetic field restriction are adopted, so that spectrum signal intensity of plasma can be greatly enhanced; and a detection environment is airtight, so that interference of other elements in air to a detection result can be effectively eliminated, and detection precision is improved.

Description

technical field [0001] The invention relates to laser-induced breakdown spectroscopy technology, in particular to a spectral detection device for double-pulse excitation magnetic field space double confinement enhanced plasma. Background technique [0002] Laser Induced Breakdown Spectroscopy (LIBS) is an analytical method of atomic emission spectroscopy that focuses high-energy laser pulses on the surface of a sample and excites the surface of the sample to generate plasma. Since this technology does not require complex pretreatment of samples and can achieve non-destructive testing, it has become an important technical means for rapid detection of material components, and has important applications in qualitative identification of materials and quantitative analysis of material components. [0003] Compared with other spectral detection methods, LIBS technology has the advantages of no sample pretreatment, fast detection speed, multiple detection elements, and long-distanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/71G01N21/01
CPCG01N21/01G01N21/718G01N2201/061
Inventor 朱红艳何勇肖舒裴郑启帅
Owner ZHEJIANG UNIV
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