Method and system for measuring gas tritium based on multi-wire proportional chamber

Abstract

The invention provides a method and a system for measuring a gas tritium based on a multi-wire proportional chamber. The method comprises the following steps that: A, an exhaust device discharges air in the multi-wire proportional chamber, and a gas pressure measuring device monitors the air pressure in the multi-wire proportional chamber; B, the exhaust device extracts an air sample containing gas tritium, the air sample is mixed with a working gas in a certain ratio through a gas mixing device, and then the mixed is output to a gas purifying device; C, the mixed gas is purified by the gas purifying device and is output to the multi-wire proportional chamber through an electromagnetic valve; and D, the anode wire of the multi-wire proportional chamber is connected with a positive high pressure, a beta-ray generated from the decay of the gas tritium entering the multi-wire proportional chamber is electrically separated from the working gas, the avalanche amplification is carried out under the action of a high voltage electric field, a pulse signal is output, and the pulse signal is obtained and identified by a data obtaining system so as to realize the measurement of the gas tritium. According to the method, the defects of an existing gas tritium measuring method, such as working efficiency, precision and sensitivity in the measurement, are overcome, the measurement of the environment gas tritium is accurately realized, and active demands on the gas tritium measurement of an existing tritium environment are met.

Description

technical field [0001] The invention relates to the field of nuclear radiation detection, in particular to a detection method and system for ambient gaseous tritium in the field of radiation protection. Background technique [0002] It has been less than a hundred years since human beings discovered tritium, an isotope of hydrogen. Tritium has only entered into large-scale production activities since 1965. Tritium has many applications in medicine, scientific research, industry, especially the nuclear industry, especially as the main lightweight material for nuclear fusion reactions. Tritium is an indispensable nuclear material for manufacturing fusion nuclear weapons. Tritium is the only radioactive isotope of hydrogen and is highly permeable. Tritium infiltrates any material it comes into contact with, and passes through it at a certain rate of penetration over a certain period of time. Since tritium is extremely soluble in water, traces of tritium infiltrated into the a...

AI Technical Summary

Problems solved by technology

At present, no research on the application of MWPC and detection of gaseous tritium has been found at home and abroad, so the present invention is innovative

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