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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).
Myron F. Elgart, Harmon L. Finston, Robert Rundberg, Evan T. Williams, Albert H. Bond, Jr., Emmanuel Yellin
Nuclear Science and Engineering | Volume 58 | Number 3 | November 1975 | Pages 291-297
Technical Paper | doi.org/10.13182/NSE75-A26778
Articles are hosted by Taylor and Francis Online.
We describe a simple method for determining the neutron-absorption cross sections of radioactive nuclides and its application to 22Na and 126I. These nuclides are produced by fast-neutron reactions in cadmium-wrapped and unshielded samples simultaneously irradiated with cobalt flux wires. Values for the thermal cross section, σ0, the resonance integral, Σ′, and s0 are calculated from the data using the Westcott convention. The results are as follows: for 22Na, σ0 = (5.11 ± 0.31) × 104 b, s0 = 2.3 ± 0.1, and Σ′ = (1.0 ± 0.1) × 105 b; for 126I, σ0 = (9.0 ± 5.0) × 103 b.
