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Conference Spotlight
2026 Annual Conference
May 31–June 3, 2026
Denver, CO|Sheraton Denver
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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).
Ashok Sadhwani, Ashok Kumar
Nuclear Science and Engineering | Volume 68 | Number 2 | November 1978 | Pages 226-230
Technical Note | doi.org/10.13182/NSE78-A27295
Articles are hosted by Taylor and Francis Online.
Two-group calculations of the propagation of neutron waves across an absorption discontinuity in beryllium are reported. The first slab is assumed to be of finite width, while the second is taken to be of infinite dimensions. It is found that in the first slab, the effect of the interface is felt earlier for lower frequencies.
