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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 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.
Dimitris Valougeorgis, Michael Williams, Edward W. Larsen
Nuclear Science and Engineering | Volume 99 | Number 2 | June 1988 | Pages 91-98
Technical Paper | doi.org/10.13182/NSE88-A23549
Articles are hosted by Taylor and Francis Online.
A study of the spectral radius for the continuous form of the source iteration, diffusion synthetic acceleration, and various PL acceleration methods (L ≥ 1) for anisotropically scattering neutron transport is carried out via a Fourier stability analysis. The purpose of the study is to determine which acceleration scheme is optimum. The problem is formulated as a matrix eigenvalue problem with, in general, N + 1 iteration eigenvalues ω where N denotes the degree of anisotropy. The P1 acceleration method is determined as the most efficient PL approach for the cases of linearly and quadratically anisotropic scattering.
