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Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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Fusion Science and Technology
Latest News
The Frisch-Peierls memorandum: A seminal document of nuclear history
The Manhattan Project is usually considered to have been initiated with Albert Einstein’s letter to President Franklin Roosevelt in October 1939. However, a lesser-known document that was just as impactful on wartime nuclear history was the so-called Frisch-Peierls memorandum. Prepared by two refugee physicists at the University of Birmingham in Britain in early 1940, this manuscript was the first technical description of nuclear weapons and their military, strategic, and ethical implications to reach high-level government officials on either side of the Atlantic. The memorandum triggered the initiation of the British wartime nuclear program, which later merged with the Manhattan Engineer District.
Y. Iwai, T. Yamanishi, M. Nishi
Fusion Science and Technology | Volume 39 | Number 2 | March 2001 | Pages 1078-1082
Tritium | doi.org/10.13182/FST01-A11963387
Articles are hosted by Taylor and Francis Online.
A preliminary improved design study of the cryogenic distillation hydrogen isotope separation system (ISS) for the fuel cycle of the ITER-FEAT, a fusion experimental reactor, was carried out based on the substantial reduction of hydrogen flow to the ISS resulting from the scale reduction from the former design for the FDR-ITER. In this study, a four-column cascade was proposed considering the 450 seconds burn / 1350 seconds dwell operation scenario of ITER-FEAT instead of the present five-column cascade design of the FDR-ITER. This proposed cascade is found to be effective in all operation phases. The impact of the optional 3000 seconds burn / 9000 seconds dwell operation scenario on the present design is also discussed in this paper. Tritium concentration in the released hydrogen stream into environment must always be controlled to be lower than the regulation limit for stack release, and the two-column system for treatment of this flow is found to be effective for meeting this requirement.
