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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).
M. Podowski
Nuclear Science and Engineering | Volume 72 | Number 2 | November 1979 | Pages 256-261
Technical Paper | doi.org/10.13182/NSE79-A19470
Articles are hosted by Taylor and Francis Online.
The question of general asymptotic stability is considered for N-order coupled-core reactors neglecting neutron coupling time lag, but with general nonlinear reactivity functionals. Stability criteria, applicable to models with reactivity coupling effects, are established. As an illustration of the general results, the linear reactivity feedback model is investigated. In particular, a two-node model with temperature coupling effects is discussed in more detail.
