【西德《原子经济——原子技术》1988年12月12日报道】 50年前(1938年12月),德国化学家奥托·哈恩和弗里茨·斯特拉斯曼在柏林凯撒·威廉研究所发现,用热中子轰击铀会引起铀原子核裂变。这是在对超铀元素进行特精密的化学分析过程中发现的,在分析过程中还反复地观察到钡的径迹。在这种发现前不久,哈恩和斯特拉斯曼已经和当时早已移居德国的物理学家莉泽·迈特纳密切地合作了。发现铀裂变的消息传播得非 [West Atomic Economy-Atomic Technology, December 12, 1988] 50 years ago (December 1938), German chemists Otto Hahn and Fritz Strassmann in Berlin’s Caesar The William Institute found that bombardment of uranium with thermal neutrons can cause nuclear fission of uranium atoms. This was discovered during the ultra-precise chemical analysis of transuranic elements, and the orbital track was repeatedly observed during the analysis. Shortly before this discovery, Hahn and Strassmann had already worked closely with Lizer Meitner, a physicist who had already moved to Germany. The news of the discovery of uranium fission spread