中科院上海应用物理所十多年前与美国橡树岭国家实验室完成了一笔几百万美元的协作,结果获得超值汇报,省下的研发时间至少十年,钍基熔盐反应堆技术世界领先。从核电站建设能力看,中国已经超前美国10年以上。

记者易速利 December 24, 2025
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核反应堆技术上中美两国原本是龟兔赛跑,中国从远远落后的起点上逐步追赶,现在已经全面接近甚至超越,不仅如此,更惊人的是双方的龟兔角色也可能出现置换,虽然美国非常不习惯扮演落后的乌龟角色,但是这个乌龟壳确实已经隐隐约约盖在后背上了。在这场竞争中,中国最先进的核反应堆技术其实是通过与美国的合作得到的,起点就是一次双方一个愿打一个愿挨的交易,美国得到了一些好处,中国得到了巨大的好处,几百万美元的代价换来的是价值根本无法用金钱估算、而且需要好多年积累才能得到的知识和技能。 中国著名的核物理学家、上海应用物理研究所SINAP的徐洪杰研究员2025年9月不幸去世,享年70岁,当时他在办公室伏案工作,不知道这样算不算烈士或者因公牺牲,他真是立下了大功。在他去世之前的4月,在中科院上海分院的一次演讲中,他宣布了一项突破性进展。过去10多年来,他带领的500人规模的团队一直在研发一种实验性的核反应堆,它并不使用固体燃料,而是运行在一种跟熔岩一样炽热的可裂变材料和熔融盐的溶液之上。溶液既作为燃料,也作为冷却介质,因此这种反应堆比目前占据主导地位的水冷核电站更安全、也更高效。徐洪杰团队研制的反应堆2023年已经在甘肃并网运行,成为全球首座也是目前唯一一座投入运行的同类反应堆,叫做钍基熔盐实验堆,这本身就是一项非凡的成就。后来徐洪杰团队进一步提高了掌控水平,实现了在不关闭反应堆的情况下添加燃料。他们的科研成就毫无疑问是又上了一个台阶。 上海方面与美国在熔盐研究领域的合作有良好的基础,双方各取所需,同时有一个对照很有意思。2012年8月上海应用物理研究所首次到加州大学伯克利开展学术交流,他们派出的代表陈昆是从美国印第安纳大学取得博士学位以后回上海工作的,当时30岁出头。美国参加的人年龄明显偏大,2/3在50-60岁之间。美国与会者有的关心总额3.5亿美元的预算问题。陈昆的答案是中国有足够的资金投入,中科院每年都在延长对项目的资助。到2018年,中国承诺在未来20年里为熔盐反应堆投入30亿美元。到2050年对整个核能的投资将达到1.3万亿美元。美国与会者也问上海应用物理所从哪里可以获得熔盐,他们一直的印象是世界上并没有生产设施,但陈昆回答说,中国已经有好几家这样的设施。对陈昆这些中国科学家来说,在这个特殊领域与美国方面建立联系很有帮助,2012年前后全世界从事熔盐裂变反应研究的人只有三四十个。找到美国同行以后,这个项目在中国的可信度会显著提高。

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