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2026 Annual Conference
May 31–June 3, 2026
Denver, CO|Sheraton Denver
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Perpetual Atomics, QSA Global produce Am fuel for nuclear space power
U.K.-based Perpetual Atomics and U.S.-based QSA Global claim to have achieved a major step forward in processing americium dioxide to fuel radioisotope power systems used in space missions. Using an industrially scalable process, the companies said they have turned americium into stable, large-scale ceramic pellets that can be directly integrated into sealed sources for radioisotope power systems, including radioisotope heater units (RHUs) and radioisotope thermoelectric generators (RTGs).
James W. Meadows
Nuclear Science and Engineering | Volume 79 | Number 2 | October 1981 | Pages 233-237
Technical Note | doi.org/10.13182/NSE81-A27412
Articles are hosted by Taylor and Francis Online.
The 240Pu-to-235U fission cross-section ratio has been measured at 55 discrete energies between thresh-old and ∼10 MeV using the 7Li(p,n)7Be and D(d,n)3He reactions as neutron sources. The sample masses were measured by (a) calculated specific activities and low geometry alpha counting, (b) by mass spectrographic isotopic dilution analyses, and (c) by comparing the relative thermal fission rates of one of the 235U samples with 240Pu samples containing ∼9% 239Pu.
