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Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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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.
J. Devooght, C. Machgeels
Nuclear Science and Engineering | Volume 32 | Number 1 | April 1968 | Pages 82-92
Technical Paper | doi.org/10.13182/NSE68-A18827
Articles are hosted by Taylor and Francis Online.
A new method of synthesis of the time-dependent behavior of a neutron pulse or of the space-dependent transfer function is given which combines analytical time dependence with numerical (or analytical) dependence of the other variables. The analytical development in Laguerre polynomials of time is obtained recursively in solving iteratively the static Boltzmann equations with sources. The convergence of the development, the bound of the truncation error, and the choice of the free parameters are examined for various cases. The method is finally applied (using an experimental map of the steady flux) in a water slab and the synthesized time-dependent flux is compared to the experimental one.
