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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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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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Inkjet droplets of radioactive material enable quick, precise testing at NIST
Researchers at the National Institute of Standards and Technology have developed a technique called cryogenic decay energy spectrometry capable of detecting single radioactive decay events from tiny material samples and simultaneously identifying the atoms involved. In time, the technology could replace characterization tasks that have taken months and could support rapid, accurate radiopharmaceutical development and used nuclear fuel recycling, according to an article published on July 8 by NIST.
Lawrence Ruby
Nuclear Science and Engineering | Volume 107 | Number 4 | April 1991 | Pages 394-396
Technical Note | doi.org/10.13182/NSE91-A23801
Articles are hosted by Taylor and Francis Online.
The classic example used to illustrate the solution to the point kinetics equations with one equivalent delayed-neutron group is argued to be inappropriate for real reactors. However, a solution to the equations, altered by the addition of a neutron source, is shown to have qualitative resemblance to a real reactor and to predict that all steady states are subcritical. Reactivity oscillations are cited as another reason for subcritical steady states.
