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Conference Spotlight
2026 Annual Conference
May 31–June 3, 2026
Denver, CO|Sheraton Denver
Standards Program
The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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Latest News
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).
Katsuhisa Kudo, Masakuni Narita, Yasutomo Ozawa
Nuclear Science and Engineering | Volume 58 | Number 1 | September 1975 | Pages 95-98
Technical Note | doi.org/10.13182/NSE75-A26770
Articles are hosted by Taylor and Francis Online.
The effects of the presence of a central cavity on the space- and time-dependent neutron energy spectrum in a fast-neutron multiplying system are analyzed as a fundamental time eigenvalue problem by use of the telegrapher’s equation. The computational results show that the cavity cooling occurs in the fast 235U system with a fundamental time eigenvalue. The results of the telegrapher’s equation are compared with those from the time-dependent Sn method.
