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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).
J. K. Fletcher
Nuclear Science and Engineering | Volume 76 | Number 2 | November 1980 | Pages 249-255
Technical Note | doi.org/10.13182/NSE80-A19455
Articles are hosted by Taylor and Francis Online.
The transport equation is considered in toroidal geometry using an expansion of Ψ(r, Ω) in unnormalized spherical harmonics, i.e., with being associated Legendre polynomials. The variable r is the position vector and Ω the direction with axial and azimuthal angles θ and , respectively. Equations for ψlm(r) and γlm(r) are obtained and a method of solution that has worked in other geometries is outlined.