为了同位素产业不再受制于人——全球首次应用商用重水堆机组批量生产碳-14纪实

Group 1 - The article highlights the successful development and commercialization of carbon-14 production in China, filling a significant gap in the market that has relied heavily on imports [1][3][4] - The carbon-14 market has seen a price increase of 5 to 10 times over six years due to rising demand, necessitating domestic production capabilities [3][6] - The Qinshan Nuclear Power's team has achieved a breakthrough by utilizing heavy water reactors for the mass production of carbon-14, marking a significant advancement in the country's nuclear technology [1][4][6] Group 2 - The production process involves neutron irradiation to convert nitrogen-14 into carbon-14, with the team overcoming challenges related to neutron energy and reactor safety [4][6][8] - The team developed a reliable model to confirm that thermal neutrons can indeed trigger the necessary reactions for carbon-14 production [6][8] - A rigorous safety analysis was conducted to ensure that the introduction of carbon-14 targets into the reactor would not disrupt its operation, leading to the successful validation of the production process [7][8][9] Group 3 - The team faced challenges in developing the carbon-14 target materials, ultimately selecting aluminum nitride powder and zirconium alloy for their design [10][12] - Innovative methods were employed to detect impurities in the target materials, which were critical for ensuring the quality of the carbon-14 produced [12][13] - The successful establishment of carbon-14 production capabilities is expected to meet domestic demand and stimulate the growth of the isotope application industry in China [1][13]