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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).
S. Pearlstein
Nuclear Science and Engineering | Volume 61 | Number 4 | December 1976 | Pages 466-470
Technical Paper | doi.org/10.13182/NSE76-A14483
Articles are hosted by Taylor and Francis Online.
Curves for the reciprocal asymptotic period versus positive reactivity for ENDF/B-IV delayed neutron data are presented for 232Th, 233U, 235U, 238U, 239Pu, 240Pu, and 241Pu nuclides. A procedure is described for reducing the dependence of reactivity interpretations, through period measurements, on the nuclidic composition of the fuel. The sensitivity of the results to incremental changes in the delayed neutron parameters is also presented. Reactivity, in dollar units, is sensitive to the relative yields of the delayed neutron groups.
