A device and method for measuring gas pressure inside a microsphere

Abstract

The invention discloses a device and a method for measuring pressure intensity of gas inside microspheres. The method includes: adopting a corrugated-pipe-type crushing mechanism to crush a to-be-measured microsphere and a calibration sphere in a vacuum shell; through air pressure change of the vacuum shell before and after crushing, calibrating volume of the vacuum shell, and accurately measuringpressure intensity of gas inside the microspheres. The device and the method are suitable for precision measuring of pressure intensity of gas inside large-diameter-range microspheres having no requirement on transparency and composition of microsphere shell layers and microspheres with adsorptive gas.

Description

technical field [0001] The invention belongs to the technical field of gas physical property measurement, and in particular relates to a device and method for measuring gas pressure inside microspheres. Background technique [0002] In high energy density physics, fusion energy utilization and other scientific research and national defense and military applications, microspheres are widely used as a fuel container. The pressure of the fuel gas in the microspheres is related to the reaction efficiency and the symmetry of the compression of the fusion process. And other important physical processes, is a very important physical parameters. The microsphere shell material is suitable for various application requirements, and the shell material has the characteristics of diversity, such as microspheres such as glass, high molecular polymer, metal beryllium and high-density carbon. The current optical measurement method can measure the pressure of the gas inside the microspheres ...

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that it can only measure the pressure of transparent microspheres and Raman active gases

The disadvantage of this method is that it can only measure transparent microspheres and single-component gases

The disadvantage of this method is: for gases with strong adsorption (such as tritium gas), the gas is easily adsorbed in a closed container, which will have a great impact on the gas pressure measurement results, so it is not suitable for measuring gases with strong adsorption ;The microsphere crushing mechanism screws in and crushes the microspheres by compressing the sealing ring. The amount of precession is within the elastic displacement range of the sealing ring, and only relatively small microspheres can be measured.

Calibrate the volume of the confined space by the amount of precession of the crushing mechanism and the barometer. Due to the small amount of precession of the crushing mechanism, the volume error of the calibrated confined space is relatively large;

[0004] It can be seen that the common problem of the existing methods is that there is no requirement for the transparency and composition of the microsphere shell, the measurement of microspheres with a wide range of diameters, the measurement of adsorbed gases, and the precise calibration of the internal gas pressure of the microspheres. Measuring device and method

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