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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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Latest News
The RAIN scale: A good intention that falls short
Radiation protection specialists agree that clear communication of radiation risks remains a vexing challenge that cannot be solved solely by finding new ways to convey technical information.
Earlier this year, an article in Nuclear News described a new radiation risk communication tool, known as the Radiation Index, or, RAIN (“Let it RAIN: A new approach to radiation communication,” NN, Jan. 2025, p. 36). The authors of the article created the RAIN scale to improve radiation risk communication to the general public who are not well-versed in important aspects of radiation exposures, including radiation dose quantities, units, and values; associated health consequences; and the benefits derived from radiation exposures.
R. K. Paschall
Nuclear Science and Engineering | Volume 20 | Number 4 | December 1964 | Pages 436-444
Technical Paper | doi.org/10.13182/NSE64-A20985
Articles are hosted by Taylor and Francis Online.
The age of fission neutrons to indium-resonance energy (1.46 eV) was measured in water using a plane fission source of finite diameter and essentially infinite plane detectors. This is equivalent to a measurement using axial detectors with an infinite plane source. Thus, unlike recent measurements which used axial detectors with large plane sources, these results do not require calculated corrections to extrapolate to infinite-source geometry. The remaining corrections are small and well understood. The age measured in this experiment was 26.48 ± 0.32 cm2 at a density of 1.0 g/ml.
