Raman spectrum quantitative analysis method for D2 fuel gas in ICF target

A technology of fuel gas and Raman spectroscopy, which is applied in the direction of material excitation analysis, material analysis through optical means, Raman scattering, etc., can solve the problem of less research and achieve the effect of improving measurement efficiency and accuracy

Pending Publication Date: 2022-01-11
LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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  • Raman spectrum quantitative analysis method for D2 fuel gas in ICF target
  • Raman spectrum quantitative analysis method for D2 fuel gas in ICF target
  • Raman spectrum quantitative analysis method for D2 fuel gas in ICF target

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Embodiment 1

[0028] An ICF on-target D 2 A method for quantitative analysis of fuel gas Raman spectroscopy, comprising the following steps:

[0029] Step 1. Based on the Raman spectrometer to measure D in the ICF target 2 Spectral acquisition of fuel gas (such as figure 1 , figure 2 ); the process is: turn on the power of the computer and the Raman spectrometer, and use a silicon chip to calibrate the Raman spectrometer; place the ICF target on the sample stage, and use the 10X and 50X objective lenses in turn to find the vertex of the inner target ball 1 of the ICF target ( Such as Figure 5 , Figure 6 ), and then focus on the center point of the target (such as Figure 7 ), after focusing on the target pellet, set the experimental parameters (such as Table 1) and then detect;

[0030] Table 1

[0031] parameter name Setting range Rang (spectral range) 100-430 Acq.time (integration time) 50 Accumulation (number of cycles) 5 Hole (number of holes...

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Abstract

The invention discloses a Raman spectrum quantitative analysis method for D2 fuel gas in an ICF target. The method comprises the following steps: step 1, carrying out spectrum acquisition on the D2 fuel gas in the ICF target based on a Raman spectrometer; step 2, carrying out data processing on the characteristic peak area of the D2 fuel gas in the ICF target, selecting a Raman spectrum in a proper range, determining a peak spectrum range, and then carrying out peak position fitting to obtain the characteristic peak area; and step 3, deriving and calculating to obtain the pressure intensity of the D2 fuel gas in the sample target. On the basis of the Raman spectrum principle and in combination with the characteristics of the ICF target, a detection light path for the D2 gas in the ICF target is designed, and quantitative analysis of the D2 gas in the ICF target can be completed within 30 min; and then, according to the basic principle of Raman quantitative measurement of gas pressure, a quantitative detection method for D2 gas in an ICF target is designed, and a complete quantitative detection method flow of D2 gas in the ICF target is designed.

Description

technical field [0001] The invention relates to the field of ICF target performance testing, specifically an ICF target D 2 A method for the quantitative analysis of fuel gas Raman spectroscopy. Background technique [0002] In inertial confinement fusion (ICF) physical experiments, the inner pellet of the inertial confinement fusion target (ICF target) usually needs to inject a certain amount of fuel gas and a certain proportion of diagnostic gas, such as Ne, Ar, etc. Deuterium-tritium mixed fuel gas is the first choice when pursuing high neutron yield experiments, but in conventional fusion general regularity studies, the use of non-radioactive pure deuterium-deuterium (D 2 ) gas is mainly to reduce inflation risk and experiment cost. Capsule fuel gas D 2 The content is an important parameter to calculate the reaction efficiency of ICF, and it needs to be accurately measured before the target experiment. There are three difficulties in the detection: (1) The diameter o...

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Application Information

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IPC IPC(8): G01N21/65G01N21/01
CPCG01N21/65G01N21/01
Inventor 乐玮高党忠陶朝友马小军顾倩倩胡勇万翔宇叶成钢陈雪姜凯唐兴王琦王宗伟
Owner LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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