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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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Fusion Science and Technology
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.
S. J. Yoo, H. L. Yang, M. Jung, T. Lho, D. C. Kim, B. J. Lee, J. S. Kim, G. H. Kim
Fusion Science and Technology | Volume 43 | Number 1 | January 2003 | Pages 286-288
Diagnostics | doi.org/10.13182/FST03-A11963616
Articles are hosted by Taylor and Francis Online.
Two types of neutral beam sources have been developed in order to measure plasma parameters on the Hanbit mirror device. The first source is a diagnostic neutral beam (DNB) which consists of a hydrogen neutral beam with a beam energy of 30 keV and a total beam current of ca. 1 A. The ion temperature profile can be determined by measuring directly the broadening of the Hα line emitted from hydrogen neutrals produced through the charge exchange recombination reaction with the DNB in the plasma. A fibre optic array detector, which works as an ideal notching filter, was developed to filter out the intense Hα line emitted from the cold hydrogen atoms in the plasma edge. The second source is a hyperthermal neutral beam (HNB) which consists of neutral particles with an energy of 1-100 eV. The HNB can be used to measure electron temperature and density profiles in the region between the core and the outer edge. This region cannot be covered either by Thomson scattering or by electrostatic probes. The feasibility of obtaining profiles of electron density and temperature by means of a helium HNB with a collisonal radiative equilibrium code has been performed.