Novel uranium isotope ratio measuring device and method

Abstract

The invention discloses a novel uranium isotope ratio measuring device which mainly comprises a first detection laser, a second detection laser, a beam combiner, an ablation laser, a beam splitter, a first photoelectric detector, a second photoelectric detector, a data acquisition card and an industrial personal computer. Ablating laser emitted by the ablating laser irradiates a sample in the ablating chamber through the second reflecting mirror to excite plasma, laser emitted by the first detecting laser passes through the first polarizing film, laser emitted by the second detecting laser passes through the first reflecting mirror and the polarizing film in sequence, the two beams of laser are combined by the beam combiner and then pass through the plasma, the beam splitter re-splits to the first photoelectric detector and the second photoelectric detector, and the data acquisition card acquires signals of the first photoelectric detector and the second photoelectric detector and transmits the signals to the industrial personal computer. The invention further discloses a novel uranium isotope ratio measuring method. The invention provides a technology which is portable, rapid, high in sensitivity and capable of measuring the uranium isotope ratio in a non-contact mode.

Description

technical field [0001] The invention relates to the technical field of absorption spectroscopy, in particular to a novel uranium isotope ratio measuring device and method thereof. Background technique [0002] Uranium is the most important nuclear fuel that can be found in nature. There are three uranium isotopes in nature ( 238 U 235 U and 234 U), 235 The content of U in natural uranium ore is only 0.711%, and less than 0.006% 234 U, and the rest over 99.2% of uranium is 238 U. 235 U is easily fissile under the action of neutrons and releases huge energy through a chain reaction. In actual production and use, 235 U abundance can reflect the production purpose and use of nuclear materials. Uranium is a strategic resource related to national security and people's livelihood. All countries attach great importance to the collection and storage of nuclear materials, and the extraction, enrichment and purification of refined natural uranium products in uranium ore or seawa...

AI Technical Summary

Problems solved by technology

The above mass spectrometry-related measurement methods have high accuracy, but these are all measurements carried out in laboratories, which have high requirements for the test environment, time-consuming sample preparation, long lead times, difficult transportation of radioactive materials, and large measurement devices. The instrument is expensive, time-consuming to use and maintain, and requires high professional technical ability of testers, making it difficult for this technology to simultaneously meet the requirements of portable, fast, online and highly sensitive measurement of uranium isotope ratio

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