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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).
Jungchung Jung, Hiroshi Chijiwa, Keisuke Kobayashi,Hiroshi Nishihara
Nuclear Science and Engineering | Volume 49 | Number 1 | September 1972 | Pages 1-9
Technical Paper | doi.org/10.13182/NSE49-01-01
Articles are hosted by Taylor and Francis Online.
A discrete ordinate transport equation in two dimensions equivalent to the PL approximation is derived to eliminate the ray effect in the ordinary discrete ordinate equations. The number of the discrete ordinates, or the number of unknown functions of this discrete ordinate equation, is equal to that of the PL equations. Since it is also possible to obtain boundary conditions equivalent to those of the PL approximation at the interface of mediums or at the free surface, we can obtain a solution identical to that of the PL equation.
